https://sprg.ssl.berkeley.edu/~tohban/wiki/index.php?title=Special:Contributions/Jmctiernan&feed=atom&limit=50&target=Jmctiernan&year=&month=RHESSI Wiki - User contributions [en]2024-03-29T05:31:26ZFrom RHESSI WikiMediaWiki 1.16.0https://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Search_for_a_Flare_Anticipation_Index_(FAI)Search for a Flare Anticipation Index (FAI)2023-11-14T18:03:00Z<p>Jmctiernan: /* Microwave precursors */</p>
<hr />
<div>{{Infobox Nugget<br />
|name = Nugget<br />
|title = Search for a Flare Anticipation Index (FAI) <br />
|number = 460<br />
|first_author = Hugh HUDSON<br />
|second_author = Jim McTIERNAN<br />
|publish_date = November 13, 2023<br />
|next_nugget = TBD <br />
|previous_nugget = {{#ask: [[Category:Nugget]] [[RHESSI Nugget Index::459]]}}<br />
}}<br />
<br />
<br />
== Introduction ==<br />
<br />
Flares often have precursor signatures that anticipate what is to happen.<br />
Can we codify this as an "Anticipation Index" (AI), or even learn how to<br />
interpret the signals to predict the characteristics (total energy, time<br />
scale, or other)?<br />
Flare precursors are often described, frequently as anecdotal issues in <br />
papers about individual flares, but the most useful Flare Anticipation Index<br />
would be one that precedes the flare by a few minutes, is robust, and is infallible.<br />
Among precursor phenomena we could list <br />
Filament rise<br />
Filament activation<br />
Preflare EUV dimming<br />
Preflare emission-line broadening<br />
Microwave precursor (Ref. [1])<br />
Soft X-ray hot onset (HOPE; Ref. [2])<br />
among others. Of those listed the first three apply mainly to eruptive <br />
flares, but the latter three may be more general.<br />
<br />
We want to gain systematic knowledge of flare precursors just for their<br />
physical significance, but there is also a practical application for any<br />
FAI that can give few-minute advance notice: observing campaigns, such<br />
as rocket launches.<br />
<br />
== Microwave precursors ==<br />
<br />
The important Ref. [1] described the pioneering observations from<br />
an early development of the <br />
[https://en.wikipedia.org/wiki/Owens_Valley_Solar_Array Owens Valley Radio Observatory],<br />
but it seems to have excited little attention at the time.<br />
These observations showed a gradual increase at low flux levels <br />
(below one [https://en.wikipedia.org/wiki/Solar_flux_unit SFU], a very low level for the Sun). <br />
At present we do not understand the mechanism of this phenomenon.<br />
In this Nugget we describe an initial FAI application of<br />
[http://www.ovsa.njit.edu EOVSA] (Owens Valley): broad-band sums of<br />
[https://en.wikipedia.org/wiki/Interferometric_visibility visibilities] <br />
over three spectral ranges over 1-18 GHz.<br />
<br />
== Hot Onset Precursor Events ==<br />
<br />
Ref. [2] pointed out that virtually all solar flares, as observed in<br />
soft X-rays, actually have a "hot onset" precursor, during which isothermal<br />
fits to the two-channel<br />
[https://www.swpc.noaa.gov/products/goes-x-ray-flux GOES] data<br />
show increasing emission measure at roughly constant temperature,<br />
typically about 10 MK.<br />
This is the HOPE ("Hot Onset Precursor Event"), and it is also not understood<br />
systematically at present.<br />
<br />
== Successful flare anticipation ==<br />
<br />
To test these microwave and soft X-ray signatures, we have initially <br />
tried one active day, 4-September-2017, which had 13 GOES events<br />
including six in the Owens Valley daytime. <br />
Very simple independent FAI algorithms used running-difference fluxes<br />
for the microwaves, and an index based on both emission-measure increase and <br />
temperature.<br />
Figure 1 show that between these two indices, we had four "true positives," no "false positives,"<br />
and two false negatives.<br />
Pretty good, but not perfect <br />
[https://www.mathsisfun.com/data/probability-false-negatives-positives.html statistical results].<br />
<br />
[[File:460f1.png|600px|thumb|center|<b>Figure 1:</b> <i><br />
Upper, the HOPE soft X-ray FAI, which triggered on two of the six flare<br />
events in the time range shown.<br />
Here the differencing is at 5 minutes.<br />
Lower, the EOVSA microwave FAI, which found three with a 3-minute differencing.<br />
Neither found false positives.<br />
</i>]]<br />
<br />
== Conclusion ==<br />
<br />
To quantify the microwave and soft X-ray signatures of flare precursor activity, we have <br />
devised "flare anticipation indices" for soft X-ray and microwave data <br />
with some success.<br />
This clearly establishes the possibility of a joint FAI development, using<br />
both of these but also others of the signatures listed above, to establish<br />
a robust (and infallible?) few-minute FAI capability.<br />
Now some hard work is necessary to refine and improve on these findings.<br />
Also, it should go without saying, we need to figure out how these various precursors<br />
relate physically to their flares... it is certainly not simply "preheating," as we <br />
perhaps used to think.<br />
<br />
[1] [https://ui.adsabs.harvard.edu/abs/1986AdSpR...6f..83V "Solar flare precursors"]<br />
<br />
[2] [https://ui.adsabs.harvard.edu/abs/2021MNRAS.501.1273H "Hot X-ray onsets of solar flares"]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/EVE-RHESSI_DEM_Models_and_the_Low-energy_Cutoff_for_Nonthermal_ElectronsEVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons2019-09-07T18:39:17Z<p>Jmctiernan: A couple of typos</p>
<hr />
<div>{{Infobox Nugget<br />
|name = Nugget<br />
|title = EVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons<br />
|number = 356<br />
|first_author = Jim McTiernan<br />
|publish_date = 9 September 2019<br />
|next_nugget = <br />
|previous_nugget = {{#ask: [[Category:Nugget]] [[RHESSI Nugget Index::355]]}}<br />
}}<br />
<br />
== Introduction ==<br />
<br />
Solar flares consist of hot plasmas with a complicated distribution of temperatures as they evolve, heating and cooling different magnetic structures.<br />
We characterize this distribution on a given line of sight, or in total, as the differential quantity (DEM), essentially d(n^V)/dT. <br />
The DEM is a measure of how much plasma exists in a source as a function of temperature, weighted by the square of the electron<br />
density.<br />
Even at the highest spatial resolution (the smallest possible image pixel) we still expect a distribution of temperatures simply because<br />
the line of sight passes through an [https://en.wikipedia.org/wiki/Optical_depth optically thin] medium, as observed in X-rays.<br />
<br />
[[RHESSI]], an X-ray imaging instrument, and [http://lasp.colorado.edu/home/missions-projects/quick-facts-sdo-eve/ EVE ], an EUV spectrometer, can be used in combination to obtain the solar flare Differential Emission Measure (DEM) from about 2 to 50 MK. (Ref. 1). Figure 1 shows an example. The left hand plot shows a measurement for a single time interval during a solar flare of 13 February 2011 (SOL2011-02-13T17:28 - GOES class M6.6). In the plot, the black curve is the DEM calculated using EVE data only, the red curve is the DEM calculated using RHESSI data, and the blue curve is the DEM which is fit to both instruments simultaneously. The right hand plot shows the same curves for multiple time intervals during two flares, the 2011 February 2013 flare and a flare two days later, SOL2011-02-15T01L44 (GOES class X2.2). The curves are normalized to remove time variation. From the plots, it is clear that the combined DEM follows the EVE DEM at low temperature (less than 10 MK or Log(T) = 7) and it follows the RHESSI DEM above 10 MK. The high T component (40 MK, Log(T)=7.6) that often appears in the EVE-only solutions is suppressed when RHESSI is included, and the low T component (5 MK, Log(T)=6.7) for RHESSI-only, which does not reflect reality, is likewise suppressed when EVE is included. <br />
<br />
[[File:Ppr2019_nugget_intercal_plot.png|500px|thumb|center|'''Figure 1''': Comparison of DEM functions for EVE (black), RHESSI (red) and EVE-RHESSI (blue) for a single time interval on the left, and for multiple intervals (scaled to remove time variations) on the right, for flares of 2011 February 13 and 2011 February 15.]]<br />
<br />
== Cutoff energy ==<br />
In a recent paper, (Ref.2) the combined EVE-RHESSI DEM was used to help estimate the elusive low-energy cutoff for nonthermal electrons. In this work the cutoff energy is related to the energy at which the presence of thermal emission forces any nonthermal spectrum to have a sharp downwards break. The concept is illustrated in Figure 2, which is a model of a typical RHESSI spectrum. For low energies, 5 to 10 keV, the emission is dominated by bremsstrahlung emission from hot plasma (aka the "thermal component"). At higher energies above 30 keV, the emission is (presumably) bremsstrahlung from accelerated electrons ("nonthermal component"). In between, both kinds of emission may exist. If we extend the nonthermal line from high energy back to 0 keV, then there would be an infinite amount of energy in the nonthermal, so there must be a minimum or "cutoff" energy for those electrons. (Ref. 3) In the Figure, the cutoff energy is 10 keV. This cutoff is an important parameter when calculating the energy content in nonthermal electrons. It is, however, obscured by the thermal component. For the best estimate of the cutoff, the thermal component needs to be accounted for as accurately as possible. The DEM calculation gives a better approximation for the thermal emission than the single temperature, or isothermal, approximation that is often used in this sort of calculation.<br />
<br />
[[File:Ppr2019_nugget_thnth_spec.png|300px|thumb|center|'''Figure 2''': Model thermal (blue) and nonthermal (black) photon spectra in the RHESSI energy range. The cutoff energy for the nonthermal spectrum is 10 keV, and the Fe line complex in the 6 to 7 keV range is clearly visible. The "crossover" energy, where the thermal and nonthermal components are approximately equal, is about 18 keV.]]<br />
<br />
== Results ==<br />
Typically, the amount of thermal emission relative to nonthermal emission increases during flares, so the calculations were done during the first two minutes of each flare in the sample. There were 38 flares in the sample, and 61 time intervals from those flares were investigated. <br />
<br />
It turns out that the estimate of cutoff energy depends critically on the ratio of flux in the 6-7 keV Fe line complex (shown in Figure 2) to the continuum emission in the 10 to 20 keV range. This ratio is sensitive to temperature; for the combined DEM, the need to fit EVE data in addition to RHESSI data results in a DEM which has a much lower average temperature (of order 10-12 MK) than would be obtained using RHESSI alone (roughly 20 to 25 MK). For most of the time intervals, the amount of emission seen by RHESSI in the Fe line complex and the relatively low temperature limits the allowable amount of thermal continuum emission and requires a substantial amount of nonthermal emission in the 10 to 20 keV range, resulting in a cutoff energy less than 10 keV. <br />
<br />
Since the Fe line complex to 10 to 20 keV continuum ratio is important, it is neccessary to consider the effect of the<br />
[https://en.wikipedia.org/wiki/Abundance_of_the_chemical_elements relative abundances of the elements] on the X-ray spectra, in particular regarding that of Fe. <br />
Figure 3 shows [https://en.wikipedia.org/wiki/Chi-squared_test chi-squared] curves for a time interval early in the 2011 February 13 flare. The black curve shows chi-squared as a function of cutoff energy for the model with "coronal" relative abundance, with the abundance of Fe a factor of four times the abundance in the photosphere. (Ref. 4) Coronal abundance is used as the default for most RHESSI analysis. The red curve shows chi-squared for the photospheric abundance model. Why the difference between the different abundance values? It turns out that the Fe line to continuum ratio constraint is more relaxed for the photospheric abundance models. For a given temperature and emission measure, reducing the Fe abundance by a factor of four to photospheric levels reduces the flux in the Fe line complex by a factor of approximately four, but only reduces the continuum emission by a factor of two, reducing the ratio of Fe line to continuum emission by a factor of two. Thus for photospheric abundance a given amount of Fe line emission is consistent with twice as much 10 to 20 keV continuum emission as for coronal abundance. This allows for a higher cutoff energy. For the sample of 61 time intervals from 38 different flares, it was found that for coronal abundance, most (39) values of the cutoff energy were less than 10 keV, and for photospheric abundance, cutoffs were mostly in the 15 to 25 keV range.<br />
<br />
[[File:Ppr2019_nugget_20110213_chi2.png|300px|thumb|center|'''Figure 3''':Chi-squared versus cutoff energy in keV for the time interval 2011 February 13, 17:32:36 to 17:33:36 UT. The black curve shows results for the coronal abundance assumption, and the red curve is for photospheric abundance. The vertical dashed lines show upper and lower limits for the cutoff energy for each model; these are based on the 99% confidence limit of the chi-squared distribution.]]<br />
<br />
== Conclusions ==<br />
1) EVE-RHESSI DEM models can fit data for both instruments simultaneously and give useful constraints for the low energy cutoff for nonthermal emission early in solar flares.<br />
<br />
2) For coronal abundance, the cutoff energy is typically low (less than 10 keV), and is limited by the relatively low average temperature of the combined EVE-RHESSI DEM, and the high Fe abundance.<br />
<br />
3) For photospheric abundance, the cutoff energy is typically approximately 10 keV higher than for coronal abundance.<br />
<br />
==References ==<br />
1. [https://ui.adsabs.harvard.edu/abs/2014ApJ...788L..31C "Constraining Solar Flare Differential Emission Measures with EVE and RHESSI"] A. Caspi, J. McTiernan & H. Warren<br />
<br />
2. [https://ui.adsabs.harvard.edu/abs/2019ApJ...881..161M "The Multi-instrument (EVE-RHESSI) DEM for Solar Flares, and Implications for Nonthermal Emission"] J. McTiernan, A. Caspi & H. Warren<br />
<br />
3. [https://ui.adsabs.harvard.edu/abs/1971SoPh...18..489B "The Deduction of Energy Spectra of Non-Thermal Electrons in Flares from the Observed Dynamic Spectra of Hard X-Ray Bursts"] J. C. Brown<br />
<br />
4. [https://ui.adsabs.harvard.edu/abs/1992ApJS...81..387F "The Potential for Plasma Diagnostics from Stellar Extreme-Ultraviolet Observations"] U. Feldman et.al.</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/File:Ppr2019_nugget_intercal_plot.pngFile:Ppr2019 nugget intercal plot.png2019-09-06T20:17:28Z<p>Jmctiernan: uploaded a new version of &quot;File:Ppr2019 nugget intercal plot.png&quot;: EVE (black) RHESSI (red) and EVE-RHESSI (blue) DEM models for flaare decay, 20110213, 20110215 flares</p>
<hr />
<div>EVE-RHESSI DEM (blue), RHESSI DEM (red), EVE DEM (black). 20110213, 20110215</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/EVE-RHESSI_DEM_Models_and_the_Low-energy_Cutoff_for_Nonthermal_ElectronsEVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons2019-09-06T20:09:38Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Nugget<br />
|name = Nugget<br />
|title = EVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons<br />
|number = 356<br />
|first_author = Jim McTiernan<br />
|publish_date = 6 September 2019<br />
|next_nugget = <br />
|previous_nugget = {{#ask: [[Category:Nugget]] [[RHESSI Nugget Index::355]]}}<br />
}}<br />
<br />
== Introduction ==<br />
<br />
[[RHESSI]], an X-ray imaging instrument, and [http://lasp.colorado.edu/home/missions-projects/quick-facts-sdo-eve/ EVE ], an EUV spectrometer, can be used in combination to obtain the solar flare Differential Emission Measure (DEM) from about 2 to 50 MK. (Ref. 1). The DEM is a measure of how much plasma exists in a source as a function of temperature. Figure 1 shows an example. The left hand plot shows a measurement for a single time interval during a solar flare of 13 February 2011 (SOL2011-02-13T17:28 - GOES class M6.6). In the plot, the black curve is the DEM calculated using EVE data only, the red curve is the DEM calculated using RHESSI data, and the blue curve is the DEM which is fit to both instruments simultaneously. The right hand plot shows the same curves for multiple time intervals during two flares, the 2011 February 2013 flare and a flare two days later, SOL2011-02-15T01L44 (GOES class X2.2). The curves are normalized to remove time variation. From the plots, it is clear that the combined DEM follows the EVE DEM at low temperature (less than 10 MK or Log(T) = 7) and it follows the RHESSI DEM above 10 MK. The high T component (40 MK, Log(T)=7.6) that often appears in the EVE-only solutions is suppressed when RHESSI is included, and the low T component (5 MK, Log(T)=6.7) for RHESSI-only, which does not reflect reality, is likewise suppressed when EVE is included. <br />
<br />
[[File:Ppr2019_nugget_intercal_plot.png|500px|thumb|center|'''Figure 1''':Comparison of DEM functions for EVE (black), RHESSI (red) and EVE-RHESSI (blue) for a single time interval on the left, and for multiple intervals (scaled to remove time variations) on the right, for flares of 2011 February 13 and 2011 February 15.]]<br />
<br />
== Cutoff energy ==<br />
In a recent paper, (Ref.2) the combined EVE-RHESSI DEM was used to help estimate the elusive low-energy cutoff for nonthermal electrons. In this work the cutoff energy is related to the energy at which the presence of thermal emission forces any nonthermal spectrum to have a sharp downwards break. The concept is illustrated in Figure 2, which is a model of a typical RHESSI spectrum. For low energies, 5 to 10 keV, the emission is dominated by bremsstrahlung emission from hot plasma (aka the "thermal component"). At higher energies above 30 keV, the emission is (presumably) bremsstrahlung from accelerated electrons ("nonthermal component"). In between, both kinds of emission may exist. If we extend the nonthermal line from high energy back to 0 keV, then there would be an infinite amount of energy in the nonthermal, so there must be a minimum or "cutoff" energy for those electrons. (Ref. 3) In the Figure, the cutoff energy is 10 keV. This cutoff is an important parameter when calculating the energy content in nonthermal electrons. It is, however, obscured by the thermal component. For the best estimate of the cutoff, the thermal component needs to be accounted for as accurately as possible. The DEM calculation gives a better approximation for the thermal emission than the single temperature, or isothermal, approximation that is often used in this sort of calculation.<br />
<br />
[[File:Ppr2019_nugget_thnth_spec.png|300px|thumb|center|'''Figure 2''':Model thermal (blue) and nonthermal (black) photon spectra in the RHESSI energy range. The cutoff energy for the nonthermal spectrum is 10 keV, and the Fe line complex in the 6 to 7 keV range is clearly visible. The "crossover" energy, where the thermal and nonthermal components are approximately equal, is about 18 keV.]]<br />
<br />
<br />
== Results ==<br />
Typically, the amount of thermal emission relative to nonthermal emission increases during flares, so the calculations were done during the first two minutes of each flare in the sample. There were 38 flares in the sample, and 61 time intervals from those flares were investigated. <br />
<br />
It turns out that the estimate of cutoff energy depends critically on the ratio of flux in the 6-7 keV Fe line complex (shown in Figure 2) to the continuum emission in the 10 to 20 keV range. This ratio is sensitive to temperature; for the combined DEM, the need to fit EVE data in addition to RHESSI data results in a DEM which has a much lower average temperature (of order 10-12 MK) than would be obtained using RHESSI alone (roughly 20 to 25 MK). For most of the time intervals, the amount of emission seen by RHESSI in the Fe line complex and the relatively low temperature limits the allowable amount of thermal continuum emission and requires a substantial amount of nonthermal emission in the 10 to 20 keV range, resulting in a cutoff energy less than 10 keV. <br />
<br />
Since the Fe line complex to 10 to 20 keV continuum ratio is important, it is neccessary to consider the effect of relative abundance on the X-ray spectra, in particular regarding the Fe abundance. Figure 3 shows chi-squared curves for a time interval early in the 2011 February 13 flare. The black curve shows chi-squared as a function of cutoff energy for the model with "coronal" relative abundance, with the abundance of Fe a factor of four times the abundance in the photosphere. (Ref. 4) Coronal abundance is used as the default for most RHESSI analysis. The red curve shows chi-squared for the photospheric abundance model. Why the difference between the different abundance values? It turns out that the Fe line to continuum ratio constraint is more relaxed for the photospheric abundance models. For a given temperature and emission measure, reducing the Fe abundance by a factor of four to photospheric levels reduces the flux in the Fe line complex by a factor of approximately four, but only reduces the continuum emission by a factor of two, reducing the ratio of Fe line to continuum emission by a factor of two. Thus for photospheric abundance a given amount of Fe line emission is consistent with twice as much 10 to 20 keV continuum emission as for coronal abundance. This allows for a higher cutoff energy. For the sample of 61 time intervals from 38 different flares, it was found that for coronal abundance, most (39) values of the cutoff energy were less than 10 keV, and for photospheric abundance, cutoffs were mostly in the 15 to 25 keV range.<br />
<br />
[[File:Ppr2019_nugget_20110213_chi2.png|300px|thumb|center|'''Figure 3''':Chi-squared versus cutoff energy in keV for the time interval 2011 February 13, 17:32:36 to 17:33:36 UT. The black curve shows results for the coronal abundance assumption, and the red curve is for photospheric abundance. The vertical dashed lines show upper and lower limits for the cutoff energy for each model; these are base on the 99% confidence limit of the chi-squared distribution.]]<br />
<br />
== Conclusions ==<br />
1) EVE-RHESSI DEM models can fit data for both instruments simultaneously and give useful constraints for the low energy cutoff for nonthermal emission early in solar flares.<br />
<br />
2) For coronal abundance, the cutoff energy is typically low (less than 10 keV), and is limited by the relatively low average temperature of the combined EVE-RHESSI DEM, and the high Fe abundance.<br />
<br />
3) For photospheric abundance, the cutoff energy is typically approxiately 10 keV higer than for coronal abundance.<br />
<br />
<br />
==References ==<br />
1. [https://ui.adsabs.harvard.edu/abs/2014ApJ...788L..31C "Constraining Solar Flare Differential Emission Measures with EVE and RHESSI"] A.Caspi, J.McTiernan & H. Warren<br />
<br />
2. [https://ui.adsabs.harvard.edu/abs/2019ApJ...881..161M "The Multi-instrument (EVE-RHESSI) DEM for Solar Flares, and Implications for Nonthermal Emission"] J.McTiernan, A.Caspi & H.Warren<br />
<br />
3. [https://ui.adsabs.harvard.edu/abs/1971SoPh...18..489B "The Deduction of Energy Spectra of Non-Thermal Electrons in Flares from the Observed Dynamic Spectra of Hard X-Ray Bursts"] J.C. Brown<br />
<br />
4. [https://ui.adsabs.harvard.edu/abs/1992ApJS...81..387F "The Potential for Plasma Diagnostics from Stellar Extreme-Ultraviolet Observations"] U.Feldman et.al.<br />
<br />
Category:Nugget]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/EVE-RHESSI_DEM_Models_and_the_Low-energy_Cutoff_for_Nonthermal_ElectronsEVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons2019-09-06T20:00:03Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Nugget<br />
|name = Nugget<br />
|title = EVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons<br />
|number = 356<br />
|first_author = Jim McTiernan<br />
|publish_date = 6 September 2019<br />
|next_nugget = <br />
|previous_nugget = {{#ask: [[Category:Nugget]] [[RHESSI Nugget Index::355]]}}<br />
}}<br />
<br />
== Introduction ==<br />
<br />
[[RHESSI]], an X-ray imaging instrument, and [http://lasp.colorado.edu/home/missions-projects/quick-facts-sdo-eve/ EVE ], an EUV spectrometer, can be used in combination to obtain the solar flare Differential Emission Measure (DEM) from about 2 to 50 MK. (Ref. 1). The DEM is a measure of how much plasma exists in a source as a function of temperature. Figure 1 shows an example. The left hand plot shows a measurement for a single time interval during a solar flare of 13 February 2011 (SOL2011-02-13T17:28 - GOES class M6.6). In the plot, the black curve is the DEM calculated using EVE data only, the red curve is the DEM calculated using RHESSI data, and the blue curve is the DEM which is fit to both instruments simultaneously. The right hand plot shows the same curves for multiple time intervals during two flares, the 2011 February 2013 flare and a flare two days later, SOL2011-02-15T01L44 (GOES class X2.2). The curves are normalized to remove time variation. From the plots, it is clear that the combined DEM follows the EVE DEM at low temperature (less than 10 MK or Log(T) = 7) and it follows the RHESSI DEM above 10 MK. The high T component (40 MK, Log(T)=7.6) that often appears in the EVE-only solutions is suppressed when RHESSI is included, and the low T component (5 MK, Log(T)=6.7), for RHESSI-only, which does not reflect reality, is likewise suppressed when EVE is included. <br />
<br />
[[File:Ppr2019_nugget_intercal_plot.png|500px|thumb|center|'''Figure 1''':Comparison of DEM functions for EVE (black), RHESSI (red) and EVE-RHESSI (blue) for a single time interval on the left, and for multiple intervals (scaled to remove time variations) on the right, for flares of 2011 February 13 and 2011 February 15.]]<br />
<br />
== Cutoff energy ==<br />
In a recent paper, (Ref.2) the combined EVE-RHESSI DEM was used to help estimate the elusive low-energy cutoff for nonthermal electrons. In this work the cutoff energy is related to the energy at which the presence of thermal emission forces any nonthermal spectrum to have a sharp downwards break. The concept is illustrated in Figure 2, which is a model of a typical RHESSI spectrum. For low energies, 5 to 10 keV, the emission is dominated by bremsstrahlung emission from hot plasma (aka the "thermal component"). At higher energies above 30 keV, the emission is (presumably) bremsstrahlung from accelerated electrons ("nonthermal component"). In between, both kinds of emission may exist. If we extend the nonthermal line from high energy back to 0 keV, then there would be an infinite amount of energy in the nonthermal, so there must be a minimum or "cutoff" energy for those electrons. (Ref. 3) In the Figure, the cutoff energy is 10 keV. This cutoff is an important parameter when calculating the energy content in nonthermal electrons. It is, however, obscured by the thermal component. For the best estimate of the cutoff, the thermal component needs to be accounted for as accurately as possible. The DEM calculation gives a better approximation for the thermal emission than the single temperature, or isothermal, approximation that is often used in this sort of calculation.<br />
<br />
[[File:Ppr2019_nugget_thnth_spec.png|300px|thumb|center|'''Figure 2''':Model thermal (blue) and nonthermal (black) photon spectra in the RHESSI energy range. The cutoff energy for the nonthermal spectrum is 10 keV, and the Fe line complex in the 6 to 7 keV range is clearly visible. The "crossover" energy, where the thermal and nonthermal components are approximately equal, is about 18 keV.]]<br />
<br />
<br />
== Results ==<br />
Typically, the amount of thermal emission relative to nonthermal emission increases during flares, so the calculations were done during the first two minutes of each flare in the sample. There were 38 flares in the sample, and 61 time intervals from those flares were investigated. <br />
<br />
It turns out that the estimate of cutoff energy depends critically on the ratio of flux in the 6-7 keV Fe line complex (shown in Figure 2) to the continuum emission in the 10 to 20 keV range. This ratio is sensitive to temperature; for the combined DEM, the need to fit EVE data in addition to RHESSI data results in a DEM which has a much lower average temperature (of order 10-12 MK) than would be obtained using RHESSI alone (roughly 20 to 25 MK). For most of the time intervals, the amount of emission seen by RHESSI in the Fe line complex and the relatively low temperature limits the allowable amount of thermal continuum emission and requires a substantial amount of nonthermal emission in the 10 to 20 keV range, resulting in a cutoff energy less than 10 keV. <br />
<br />
Since the Fe line complex to 10 to 20 keV continuum ratio is important, it is neccessary to consider the effect of relative abundance on the X-ray spectra, in particular regarding the Fe abundance. Figure 3 shows chi-squared curves for a time interval early in the 2011 February 13 flare. The black curve shows chi-squared as a function of cutoff energy for the model with "coronal" relative abundance, with the abundance of Fe a factor of four times the abundance in the photosphere. (Ref. 4) Coronal abundance is used as the default for most RHESSI analysis. The red curve shows chi-squared for the photospheric abundance model. Why the difference between the different abundance values? It turns out that the Fe line to continuum ratio constraint is more relaxed for the photospheric abundance models. For a given temperature and emission measure, reducing the Fe abundance by a factor of four to photospheric levels reduces the flux in the Fe line complex by a factor of approximately four, but only reduces the continuum emission by a factor of two, reducing the ratio of Fe line to continuum emission by a factor of two. Thus for photospheric abundance a given amount of Fe line emission is consistent with twice as much 10 to 20 keV continuum emission as for coronal abundance. This allows for a higher cutoff energy. For the sample of 61 time intervals from 38 different flares, it was found that for coronal abundance, most (39) values of the cutoff energy were less than 10 keV, and for photospheric abundance, cutoffs were mostly in the 15 to 25 keV range.<br />
<br />
[[File:Ppr2019_nugget_20110213_chi2.png|300px|thumb|center|'''Figure 3''':Chi-squared versus cutoff energy in keV for the time interval 2011 February 13, 17:32:36 to 17:33:36 UT. The black curve shows results for the coronal abundance assumption, and the red curve is for photospheric abundance. The vertical dashed lines show upper and lower limits for the cutoff energy for each model; these are base on the 99% confidence limit of the chi-squared distribution.]]<br />
<br />
== Conclusions ==<br />
1) EVE-RHESSI DEM models can fit data for both instruments simultaneously and give useful constraints for the low energy cutoff for nonthermal emission early in solar flares.<br />
<br />
2) For coronal abundance, the cutoff energy is typically low (less than 10 keV), and is limited by the relatively low average temperature of the combined EVE-RHESSI DEM, and the high Fe abundance.<br />
<br />
3) For photospheric abundance, the cutoff energy is typically approxiately 10 keV higer than for coronal abundance.<br />
<br />
<br />
==References ==<br />
1. [https://ui.adsabs.harvard.edu/abs/2014ApJ...788L..31C "Constraining Solar Flare Differential Emission Measures with EVE and RHESSI"] A.Caspi, J.McTiernan & H. Warren<br />
<br />
2. [https://ui.adsabs.harvard.edu/abs/2019ApJ...881..161M "The Multi-instrument (EVE-RHESSI) DEM for Solar Flares, and Implications for Nonthermal Emission"] J.McTiernan, A.Caspi & H.Warren<br />
<br />
3. [https://ui.adsabs.harvard.edu/abs/1971SoPh...18..489B "The Deduction of Energy Spectra of Non-Thermal Electrons in Flares from the Observed Dynamic Spectra of Hard X-Ray Bursts"] J.C. Brown<br />
<br />
4. [https://ui.adsabs.harvard.edu/abs/1992ApJS...81..387F "The Potential for Plasma Diagnostics from Stellar Extreme-Ultraviolet Observations"] U.Feldman et.al.<br />
<br />
Category:Nugget]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/EVE-RHESSI_DEM_Models_and_the_Low-energy_Cutoff_for_Nonthermal_ElectronsEVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons2019-09-06T19:58:35Z<p>Jmctiernan: Draft of EVE-RHESSI DEM nugget, jmm, 2019-09-06</p>
<hr />
<div>{{Infobox Nugget<br />
|name = Nugget<br />
|title = EVE-RHESSI DEM Models and the Low-energy Cutoff for Nonthermal Electrons<br />
|number = 356<br />
|first_author = Jim McTiernan<br />
|publish_date = 6 September 2019<br />
|next_nugget = <br />
|previous_nugget = {{#ask: [[Category:Nugget]] [[RHESSI Nugget Index::355]]}}<br />
}}<br />
<br />
== Introduction ==<br />
<br />
[[RHESSI]], an X-ray imaging instrument, and [http://lasp.colorado.edu/home/missions-projects/quick-facts-sdo-eve/ EVE ], an EUV spectrometer, can be used in combination to obtain the solar flare Differential Emission Measure (DEM) from about 2 to 50 MK. (Ref. 1). The DEM is a measure of how much plasma exists in a source as a function of temperature. Figure 1 shows an example. The left hand plot shows a measurement for a single time interval during a solar flare of 13 February 2011 (SOL2011-02-13T17:28 - GOES class M6.6). In the plot, the black curve is the DEM calculated using EVE data only, the red curve is the DEM calculated using RHESSI data, and the blue curve is the DEM which is fit to both instruments simultaneously. The right hand plot shows the same curves for multiple time intervals during two flares, the 2011 February 2013 flare and a flare two days later, SOL2011-02-15T01L44 (GOES class X2.2). The curves are normalized to remove time variation. From the plots, it is clear that the combined DEM follows the EVE DEM at low temperature (less than 10 MK or Log(T) = 7) and it follows the RHESSI DEM above 10 MK. The high T component (40 MK, Log(T)=7.6) that often appears in the EVE-only solutions is suppressed when RHESSI is included, and the low T component (5 MK, Log(T)=6.7), for RHESSI-only, which does not reflect reality, is likewise suppressed when EVE is included. <br />
<br />
[[File:Ppr2019_nugget_intercal_plot.png|500px|thumb|center|'''Figure 1''':Comparison of DEM functions for EVE (black), RHESSI (red) and EVE-RHESSI (blue) for a single time interval on the left, and for multiple intervals (scaled to remove time variations) on the right, for flares of 2011 February 13 and 2011 February 15.]]<br />
<br />
== Cutoff energy ==<br />
In a recent paper, (Ref.2) the combined EVE-RHESSI DEM was used to help estimate the elusive low-energy cutoff (needs link) for nonthermal electrons. In this work the cutoff energy is related to the energy at which the presence of thermal emission forces any nonthermal spectrum to have a sharp downwards break. The concept is illustrated in Figure 2, which is a model of a typical RHESSI spectrum. For low energies, 5 to 10 keV, the emission is dominated by bremsstrahlung emission from hot plasma (aka the "thermal component"). At higher energies above 30 keV, the emission is (presumably) bremsstrahlung from accelerated electrons ("nonthermal component"). In between, both kinds of emission may exist. If we extend the nonthermal line from high energy back to 0 keV, then there would be an infinite amount of energy in the nonthermal, so there must be a minimum or "cutoff" energy for those electrons. (Ref. 3) In the Figure, the cutoff energy is 10 keV. This cutoff is an important parameter when calculating the energy content in nonthermal electrons. It is, however, obscured by the thermal component. For the best estimate of the cutoff, the thermal component needs to be accounted for as accurately as possible. The DEM calculation gives a better approximation for the thermal emission than the single temperature, or isothermal, approximation that is often used in this sort of calculation.<br />
<br />
[[File:Ppr2019_nugget_thnth_spec.png|300px|thumb|center|'''Figure 2''':Model thermal (blue) and nonthermal (black) photon spectra in the RHESSI energy range. The cutoff energy for the nonthermal spectrum is 10 keV, and the Fe line complex in the 6 to 7 keV range is clearly visible. The "crossover" energy, where the thermal and nonthermal components are approximately equal, is about 18 keV.]]<br />
<br />
<br />
== Results ==<br />
Typically, the amount of thermal emission relative to nonthermal emission increases during flares, so the calculations were done during the first two minutes of each flare in the sample. There were 38 flares in the sample, and 61 time intervals from those flares were investigated. <br />
<br />
It turns out that the estimate of cutoff energy depends critically on the ratio of flux in the 6-7 keV Fe line complex (shown in Figure 2) to the continuum emission in the 10 to 20 keV range. This ratio is sensitive to temperature; for the combined DEM, the need to fit EVE data in addition to RHESSI data results in a DEM which has a much lower average temperature (of order 10-12 MK) than would be obtained using RHESSI alone (roughly 20 to 25 MK). For most of the time intervals, the amount of emission seen by RHESSI in the Fe line complex and the relatively low temperature limits the allowable amount of thermal continuum emission and requires a substantial amount of nonthermal emission in the 10 to 20 keV range, resulting in a cutoff energy less than 10 keV. <br />
<br />
Since the Fe line complex to 10 to 20 keV continuum ratio is important, it is neccessary to consider the effect of relative abundance on the X-ray spectra, in particular regarding the Fe abundance. Figure 3 shows chi-squared curves for a time interval early in the 2011 February 13 flare. The black curve shows chi-squared as a function of cutoff energy for the model with "coronal" relative abundance, with the abundance of Fe a factor of four times the abundance in the photosphere. (Ref. 4) Coronal abundance is used as the default for most RHESSI analysis. The red curve shows chi-squared for the photospheric abundance model. Why the difference between the different abundance values? It turns out that the Fe line to continuum ratio constraint is more relaxed for the photospheric abundance models. For a given temperature and emission measure, reducing the Fe abundance by a factor of four to photospheric levels reduces the flux in the Fe line complex by a factor of approximately four, but only reduces the continuum emission by a factor of two, reducing the ratio of Fe line to continuum emission by a factor of two. Thus for photospheric abundance a given amount of Fe line emission is consistent with twice as much 10 to 20 keV continuum emission as for coronal abundance. This allows for a higher cutoff energy. For the sample of 61 time intervals from 38 different flares, it was found that for coronal abundance, most (39) values of the cutoff energy were less than 10 keV, and for photospheric abundance, cutoffs were mostly in the 15 to 25 keV range.<br />
<br />
[[File:Ppr2019_nugget_20110213_chi2.png|300px|thumb|center|'''Figure 3''':Chi-squared versus cutoff energy in keV for the time interval 2011 February 13, 17:32:36 to 17:33:36 UT. The black curve shows results for the coronal abundance assumption, and the red curve is for photospheric abundance. The vertical dashed lines show upper and lower limits for the cutoff energy for each model; these are base on the 99% confidence limit of the chi-squared distribution.]]<br />
<br />
== Conclusions ==<br />
1) EVE-RHESSI DEM models can fit data for both instruments simultaneously and give useful constraints for the low energy cutoff for nonthermal emission early in solar flares.<br />
<br />
2) For coronal abundance, the cutoff energy is typically low (less than 10 keV), and is limited by the relatively low average temperature of the combined EVE-RHESSI DEM, and the high Fe abundance.<br />
<br />
3) For photospheric abundance, the cutoff energy is typically approxiately 10 keV higer than for coronal abundance.<br />
<br />
<br />
==References ==<br />
1. [https://ui.adsabs.harvard.edu/abs/2014ApJ...788L..31C "Constraining Solar Flare Differential Emission Measures with EVE and RHESSI"] A.Caspi, J.McTiernan & H. Warren<br />
<br />
2. [https://ui.adsabs.harvard.edu/abs/2019ApJ...881..161M "The Multi-instrument (EVE-RHESSI) DEM for Solar Flares, and Implications for Nonthermal Emission"] J.McTiernan, A.Caspi & H.Warren<br />
<br />
3. [https://ui.adsabs.harvard.edu/abs/1971SoPh...18..489B "The Deduction of Energy Spectra of Non-Thermal Electrons in Flares from the Observed Dynamic Spectra of Hard X-Ray Bursts"] J.C. Brown<br />
<br />
4. [https://ui.adsabs.harvard.edu/abs/1992ApJS...81..387F "The Potential for Plasma Diagnostics from Stellar Extreme-Ultraviolet Observations"] U.Feldman et.al.<br />
<br />
Category:Nugget]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/File:Ppr2019_nugget_thnth_spec.pngFile:Ppr2019 nugget thnth spec.png2019-09-06T19:11:13Z<p>Jmctiernan: Thermal (blue) Nonthermal (black) example, cutoff energy is 10 keV</p>
<hr />
<div>Thermal (blue) Nonthermal (black) example, cutoff energy is 10 keV</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/File:Ppr2019_nugget_intercal_plot.pngFile:Ppr2019 nugget intercal plot.png2019-09-06T19:10:11Z<p>Jmctiernan: EVE-RHESSI DEM (blue), RHESSI DEM (red), EVE DEM (black). 20110213, 20110215</p>
<hr />
<div>EVE-RHESSI DEM (blue), RHESSI DEM (red), EVE DEM (black). 20110213, 20110215</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/File:Ppr2019_nugget_20110213_chi2.pngFile:Ppr2019 nugget 20110213 chi2.png2019-09-06T19:08:50Z<p>Jmctiernan: Chi^2 versus cutoff energy E_c, coronal (black), photospheric (red) abundance</p>
<hr />
<div>Chi^2 versus cutoff energy E_c, coronal (black), photospheric (red) abundance</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Hsi_flare_list_fill:_How_the_RHESSI_Flare_List_is_GeneratedHsi flare list fill: How the RHESSI Flare List is Generated2019-08-28T17:34:26Z<p>Jmctiernan: Testing new OS</p>
<hr />
<div>'''HSI_FLARE_LIST_FILL:'''<br />
<br />
[http://hessi.ssl.berkeley.edu/hessidata/dbase/hessi_flare_list.txt The RHESSI flare list] is created during quicklook processing (and is often re-processed). It is distributed with the software and the flare list files can be found in the directory $ssw/hessi/dbase. Both FITS (hessi_flare_list_yyyymm.fits) and text files are available. The full list includes many events which are not necessarily of solar origin. <br />
<br />
The IDL routine used to create the flare list for a given time interval is called HSI_FLARE_LIST_FILL. It is distributed with the [http://hesperia.gsfc.nasa.gov/rhessidatacenter/software/documentation.html RHESSI software] (as is all of the software used to create the RHESSI database), and is found in the directory $ssw/hessi/idl/qlook_archive. <br />
<br />
Steps in hsi_flare_list_fill:<br />
<br />
The time range is 1 orbit, starting and ending in SC night. Note that most parameters are changeable via keyword (mostly true; it seems that min, max of 8.0, 300.0 seconds are hardcoded for imaging interval tests).<br />
<br />
1) Get flags, saa, eclipse, gap, atten_state, max_det_vs_tot from obs_summ_flag object.<br />
<br />
2) Get count_rate, corrected count rates from obs_summ_rate object. Ch0=1, the 6 to 12 keV channel is the primary channel. This was changed from 12-25 keV in 2007.<br />
<br />
3) Calculate correction factor, uncorrected/corrected rates, used in calculation of uncertainties<br />
<br />
4) Use HSI_ALT_THRESHOLD to get threshold values for "possibly solar". This currently defaults to use front_ratio, the front to total counts ratio, the alt threshold is the lowest flat nonzero background level (using hsi_obs_bck0) plus 3.0*sigma. Post 2016 anneal, the MOD_VARIANCE (variance in count rates for detector 8 is used instead.<br />
<br />
5) Find and flag nonzero count rates, no gap or SAA flags are allowed. If there is no good data, return.<br />
<br />
6) Save corrected unsmoothed rates for output.<br />
<br />
7) Get background rate. The background level at a given point is then the average value for the previous minute, unless it is less than the min daylight background level, which is possible if there are gaps, or at the day start; then the min daylight value is used. The min daylight background value is found using the program HSI_OBS_BCK0, which finds the minimum value in the daytime rate, subject to a flatness test. Also we set an upper limit to daytime_bck, to avoid missing flares that start at daytime and last the whole orbit. This is a function of energy; for ch0=1, the value is 20.0; that is, the daylight background level is never allowed to go above 20 cps/detector.<br />
<br />
So to recap, the procedure is as follows: find the min value of count rate during daytime; if it's larger than 20, set this value to 20; then for each time interval, get the count rate for the previous minute. If this is more than the min daytime rate, keep it. Otherwise set it to the min daytime rate.<br />
<br />
8) The excess flare threshold is the background level plus 3*sigma. Sigma is the standard deviation of the count rate for the previous minute used for the calculation of the background level.<br />
<br />
9) Rates are smoothed after threshold calculation. Smoothing is done over 15 points (1 minute).<br />
<br />
10) Count rates during eclipse are now set to zero.<br />
<br />
[[Image:Hsi_flare_list_simple_flare.png|600px|thumb|center|'''Figure 1''':Here is a sample of the results of the EXCESS_INTERVALS calculation for a familiar orbit from 2002-02-20; the white line is the count rate from 6 to 12 keV, the red line is the threshold rate. The blue lines show the flare time intervals.]]<br />
<br />
<br />
11) Call EXCESS_INTERVALS to get flare candidates. EXCESS_INTERVALS compares the count rate at each point to it's threshold value. If the value goes above the threshold, then an event start is recorded. The event ends when the count rate drops below the threshold value*1.2.<br />
<br />
<br />
[[Image:Hsi_flare_list_mult_flare.png|600px|thumb|center|'''Figure 2''':Here is a sample of the results for an orbit from 2006-12-05; the white line is the count rate from 6 to 12 keV, and the red line again shows the threshold level. The blue lines show the flare time intervals. The first, second, fifth, and sixth intervals have multiple peaks, and may possibly be split up.]]<br />
<br />
<br />
12) Back in HSI_FLARE_LIST_FILL, if events were found, then loop over each one. For each event: <br />
<br />
a) events with data gaps longer than 5 minutes are split.<br />
<br />
b) events which have multiple peaks are split using TEMP_SPLIT_FLARE. Here splitting occurs unless:<br />
<br />
b1) the minimum value between peaks does not drop to less than 1/2 the value of the 1st peak excess count rate. AND <br />
<br />
b2) the minimum is not "flat";i.e. there is not a 5 minute period around the minimum where the count rate varies by less than 10%. AND <br />
<br />
b3) the minimum value for excess counts does not drop to a value below twice the threshold value. (This helps for small flares.)<br />
<br />
So, if the value of the excess count rate drops below 1/2 the value of the first peak, OR if there is a flat period of more than 5 minutes between peaks, OR a 5 minute data gap between peaks, OR if the rate drops to less than twice the threshold value, the next peak is considered to be a separate flare. <br />
<br />
Note that here excess counts refers to counts - threshold value (background plus 3*sigma). Also the count rate gets extra smoothing (31 points, 124 seconds) before peak-finding. This is shown in the next Figure,the extrasmoothing has removed some smaller peaks, so only one of the intervals is split.<br />
<br />
<br />
[[Image:Hsi_flare_list_split_flare_sm.png|600px|thumb|center|'''Figure 2b''':Here is a sample of the results of the TEMP_SPLIT_FLARE calculation for a flare on 2006-12-05; the white line is the count rate from 6 to 12 keV. The blue lines show the flare time intervals. The fifth interval has now been split into three separate contiguous intervals. ]]<br />
<br />
<br />
<br />
13) Call HSI_FLARE_ATTEN_CHECK, which checks for possiblilty of a new "flare" being caused by an att_state change. If flares are separated only by an att_state change, then they are combined.<br />
<br />
14) Next for each event, <br />
<br />
a) check for duration, flares must be at least 12 seconds. <br />
<br />
b) check max_det_vs_tot flag, if the rate in the front detector with the most counts is more than 50% of the total, then this one is thrown out. <br />
<br />
c) Uncorrected peak count rate must be greater than 5.0 cps/detector. <br />
<br />
15) If there are still events, then call EXCESS_INTERVALS again, this time for each energy channel, to get possible intervals for higher energies.<br />
<br />
16) For each flare, check to decide if its solar: <br />
<br />
a) If the front_ratio is greater than the alt_threshold (see step 4) OR the variance in the count rate due to modulation in channel ch0 (6-12 keV) is 1.5 times that expected from poisson, then we continue. If not then this one is tagged "non-solar".<br />
<br />
b) Use HSI_OK_INTV to find "good" intervals for imaging. Intervals may be as long as 300.0 sec, or as short as 8.0. (As noted before, the 300 and 8 are hard coded, probably sometime in the future these will be changeable parameters.)<br />
<br />
c) Use HSI_XY_TEST_NEW to check for valid position. This finds flare position, using HSI_LOCATE_FLARE, which compares the peak brightness position for different detectors. Each possible "good" interval, starting with the one closest to the flare peak, is tested until it gets a result. Or not -- if it fails on all intervals, this one is flagged "possible solar". If a valid position is found, the flare is finally flagged as "solar". <br />
<br />
d) If we do get a position, then we test position for each energy band. This uses HSI_XY_TEST_NEW, /VERIFY, which returns a valid posiiton if the position value is close (within an arcminute) to the 6-12 position. The highest energy channel that succeeds is put in the energy_hi field of the flare list data structure.<br />
<br />
<br />
17) The final step is to fill the bck_rate, bck_rate_time fields in the output structure. Tags are filled with the background rate (from the corrected rates) and time interval (1 minute before each flare).<br />
<br />
<br />
'''Post HSI_FLARE_LIST_FILL:''' <br />
<br />
Results are passed back to the calling routine, HSI_FLARE_LIST::FILL in an anonymous structure, here the rest of the flarelistdata structure is filled.<br />
<br />
1) Peak and total count rates are calculated for the 6 to 12 keV channel. <br />
<br />
2) A correction factor, (corrected_rate/uncorrected_rate) is calculated for the peak and total.<br />
<br />
3) Data.sflag1 is set: sflag1=0 means not solar, sflag1=1 means solar (i.e., valid position), sflag1=2 means "possibly solar" (in the front detectors, but no valid position).<br />
<br />
3) Flare flags are filled in hsi_flare_flag_fill.pro<br />
<br />
4) Filename tag is filled.<br />
<br />
5) Flare Id's are assigned using HSI_FLARE_ID_CHECK. HSI_FLARE_ID_CHECK checks the previous flare list for flares in this time range and assigns id's so that old id's are kept for flares that have overlapping time ranges with previous ones.<br />
<br />
6) alt_id (just time2file for the flare start) is assigned. (This will change soon to use a new IAU naming convention).<br />
<br />
7) HSI_FLARELIST2GOES assigns [http://www.swpc.noaa.gov/today.html#xray GOES] events, if there is one for the given time range. It also finds the value of the GOES flux at the flare peak, to give an idea of flare size for small flares without corresponding GOES flares.<br />
<br />
8) HSI_FLARELIST2AR assigns the closest active region. (Position is compared to position found at the start of the day from NAR files).<br />
<br />
9) The [http://sprg.ssl.berkeley.edu/~jimm/hessi/hsi_obs_summ_soc.html OBS_SUMMARY] object for the object is updated with flare flags.<br />
<br />
<br />
'''HSI_DO_QLOOK_IMAGE for images and spectra:'''<br />
<br />
The flare list is also changed in the program HSI_DO_QLOOK_IMAGE, which is run in a separate cronjob.<br />
<br />
HSI_DO_QLOOK_IMAGE handles both images and spectra. (This is done to cut down on the number of cronjobs). For each flare, images are done for each energy band for which a valid position was found, up to the 300 to 800 keV band. The image pixel size is 3 arcsecond, with 64x64 pixels, and the time range is the one used to find the flare position. This time range is typically a 5 minute range at the flare peak in the given energy channel.<br />
<br />
Spectra are calculated at approximately 1 minute time resolution, depending on attenuator state changes. The energy bands start out as 1 keV resolution from 3 to 10 keV then increasing by 10% for each<br />
succeeding energy channel. Background levels are calculated using the program HSI_NEW_SPEC_BCK, which uses a database of background level versus SC position calculated during spacecraft night. Next the detector response matrix is inverted (HSI_INVERT_SPECTRUM) to obtain a photon flux spectrum for the energy range > 6 keV. This is<br />
used to get the peak, total and e-folding photon flux. These flux values are appended to the flare list data structure. Note that the background levels used for this procedure are less than reliable for times after 2006, [http://sprg.ssl.berkeley.edu/~tohban/nuggets/?page=article&article_id=27 when radiation damage began to affect detectors]. We're working on a better time-dependent background calculation.</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-06-06Tohban Report 2018-06-062018-06-08T18:10:54Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 30 May 2018 |end_date = 6 June 2018 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == Solar Act..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 30 May 2018<br />
|end_date = 6 June 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Small activity<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 26 0 0 0<br />
<br />
No RHESSI flares to count. <br />
<br />
== Memory Management ==<br />
<br />
Detectors are off, SSR fill at 58%<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors are off, system is cooling:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values. Cold tips are down to 137.9 and 136.1 K, cold <br />
plates are at 161.8 and 160.3 K.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 30-may-2018 TO 7-jun-2018<br />
TIME RANGE: 2018-05-30T00:00:00.000 -- 2018-06-07T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-05-30T14:00:00.000 -- 2018-05-30T14:10:00.000 600.00000<br />
2018-06-02T23:20:00.000 -- 2018-06-02T23:25:00.000 300.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-06-03T04:10:00.000 -- 2018-06-03T04:30:00.000 1200.0000<br />
2018-06-03T16:10:00.000 -- 2018-06-03T21:50:00.000 20400.000<br />
2018-06-06T06:15:00.000 -- 2018-06-06T12:00:00.000 20700.000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-05-30T00:00:00.000 -- 2018-06-07T00:00:00.000 691200.00<br />
<br />
(Moitor rates are off, so the full week is a gap)<br />
<br />
== Detector issues ==<br />
<br />
Detectors are off.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || See above<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-04-18Tohban Report 2018-04-182018-04-18T17:30:27Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 11 April 2018 |end_date = 18 April 2018 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == Solar..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 11 April 2018<br />
|end_date = 18 April 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
Some GOES activity, No RHESSI flares to count. <br />
<br />
== Memory Management ==<br />
<br />
Detectors were turned off for annealing at 21:35 on April 12th;<br />
Decimation was active/vigorous at the time. The SSR read pointer was<br />
moved to 135000000 on 17-April, to reduce the SSR fill to 7.5%. This<br />
resulted in a vc3 data gap from 11-apr-2018 01:50 until 16-apr-2018<br />
02:30. Currently the SSR fill is approximately 10%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors are off:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 2018-04-11 To 2018-04-18<br />
TIME RANGE: 2018-04-11T00:00:00.000 -- 2018-04-18T00:00:00.000<br />
NO GAPS IN APP_ID = 1 (VC1-SOH)<br />
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-04-11T00:10:00.000 -- 2018-04-11T00:15:00.000 300.00000<br />
2018-04-11T01:50:00.000 -- 2018-04-16T02:30:00.000 434400.00<br />
2018-04-17T05:05:00.000 -- 2018-04-18T00:00:00.000 68100.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors are off.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || See above<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-03-21Tohban Report 2018-03-212018-03-21T18:11:37Z<p>Jmctiernan: /* Memory Management */</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 14 March 2018<br />
|end_date = 21 March 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
No RHESSI flares to count. Maybe an A5 flare for GOES on 20-mar-2018.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
up to 83% on 2018-03-15, and the pointer was jumped to free all of the<br />
memory. This resulted in a Vc3 data gap from 7-mar-2018 02:56 until<br />
15-mar-18:45. Currently the SSR fill is approximately 50%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 136.4<br />
and 134.6 K as of 19-Mar-2018. The cold plates, 1 and 2 are 159.6 and<br />
158.2 K. Cryocooler power is 54.9W, cryocooler efficiencies are<br />
0.0339 and 0.0343. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 14-mar-2018 TO 22-mar-2018, note the the large gaps for 21-march-2018 are likely to be filled.<br />
TIME RANGE: 2018-03-14T00:00:00.000 -- 2018-03-22T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-18T05:10:00.000 -- 2018-03-18T10:50:00.000 20400.000<br />
2018-03-19T11:05:00.000 -- 2018-03-19T12:00:00.000 3300.0000<br />
2018-03-20T10:35:00.000 -- 2018-03-20T11:30:00.000 3300.0000<br />
2018-03-21T12:00:00.000 -- 2018-03-21T12:40:00.000 2400.0000<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 6<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-14T00:00:00.000 -- 2018-03-15T18:45:00.000 153900.00<br />
2018-03-15T23:55:00.000 -- 2018-03-16T01:10:00.000 4500.0000<br />
2018-03-16T07:20:00.000 -- 2018-03-16T10:45:00.000 12300.000<br />
2018-03-16T18:25:00.000 -- 2018-03-16T18:30:00.000 300.00000<br />
2018-03-17T22:45:00.000 -- 2018-03-18T02:25:00.000 13200.000<br />
2018-03-18T17:05:00.000 -- 2018-03-22T00:00:00.000 284100.00<br />
<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || See above<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 22.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-03-21Tohban Report 2018-03-212018-03-21T18:11:03Z<p>Jmctiernan: /* Spacecraft Management */</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 14 March 2018<br />
|end_date = 21 March 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
No RHESSI flares to count. Maybe an A5 flare for GOES on 20-mar-2018.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
up to 83% on 2018-03-15, and the pointer was jumped to free all of the<br />
memory. This resulted in a Vc3 data gap from 7-mar-2018 02:25 until<br />
15-mar-18:45. Currently the SSR fill is approximately 50%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 136.4<br />
and 134.6 K as of 19-Mar-2018. The cold plates, 1 and 2 are 159.6 and<br />
158.2 K. Cryocooler power is 54.9W, cryocooler efficiencies are<br />
0.0339 and 0.0343. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 14-mar-2018 TO 22-mar-2018, note the the large gaps for 21-march-2018 are likely to be filled.<br />
TIME RANGE: 2018-03-14T00:00:00.000 -- 2018-03-22T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-18T05:10:00.000 -- 2018-03-18T10:50:00.000 20400.000<br />
2018-03-19T11:05:00.000 -- 2018-03-19T12:00:00.000 3300.0000<br />
2018-03-20T10:35:00.000 -- 2018-03-20T11:30:00.000 3300.0000<br />
2018-03-21T12:00:00.000 -- 2018-03-21T12:40:00.000 2400.0000<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 6<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-14T00:00:00.000 -- 2018-03-15T18:45:00.000 153900.00<br />
2018-03-15T23:55:00.000 -- 2018-03-16T01:10:00.000 4500.0000<br />
2018-03-16T07:20:00.000 -- 2018-03-16T10:45:00.000 12300.000<br />
2018-03-16T18:25:00.000 -- 2018-03-16T18:30:00.000 300.00000<br />
2018-03-17T22:45:00.000 -- 2018-03-18T02:25:00.000 13200.000<br />
2018-03-18T17:05:00.000 -- 2018-03-22T00:00:00.000 284100.00<br />
<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || See above<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 22.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-03-21Tohban Report 2018-03-212018-03-21T17:44:33Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 14 March 2018<br />
|end_date = 21 March 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
No RHESSI flares to count. Maybe an A5 flare for GOES on 20-mar-2018.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
up to 83% on 2018-03-15, and the pointer was jumped to free all of the<br />
memory. This resulted in a Vc3 data gap from 7-mar-2018 02:25 until<br />
15-mar-18:45. Currently the SSR fill is approximately 50%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 136.4<br />
and 134.6 K as of 19-Mar-2018. The cold plates, 1 and 2 are 159.6 and<br />
158.2 K. Cryocooler power is 54.9W, cryocooler efficiencies are<br />
0.0339 and 0.0343. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 14-mar-2018 TO 22-mar-2018, note the the large gaps for 21-march-2018 are likely to be filled.<br />
TIME RANGE: 2018-03-14T00:00:00.000 -- 2018-03-22T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-18T05:10:00.000 -- 2018-03-18T10:50:00.000 20400.000<br />
2018-03-19T11:05:00.000 -- 2018-03-19T12:00:00.000 3300.0000<br />
2018-03-20T10:35:00.000 -- 2018-03-20T11:30:00.000 3300.0000<br />
2018-03-21T12:00:00.000 -- 2018-03-21T12:40:00.000 2400.0000<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 6<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-14T00:00:00.000 -- 2018-03-15T18:45:00.000 153900.00<br />
2018-03-15T23:55:00.000 -- 2018-03-16T01:10:00.000 4500.0000<br />
2018-03-16T07:20:00.000 -- 2018-03-16T10:45:00.000 12300.000<br />
2018-03-16T18:25:00.000 -- 2018-03-16T18:30:00.000 300.00000<br />
2018-03-17T22:45:00.000 -- 2018-03-18T02:25:00.000 13200.000<br />
2018-03-18T17:05:00.000 -- 2018-03-22T00:00:00.000 284100.00<br />
<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || See above<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-03-21Tohban Report 2018-03-212018-03-21T17:43:29Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 14 March 2018<br />
|end_date = 21 March 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
No RHESSI flares to count. Maybe an A5 flare for GOES on 20-mar-2018.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
up to 83% on 2018-03-15, and the pointer was jumped to free all of the<br />
memory. This resulted in a Vc3 data gap from 7-mar-2018 02:25 until<br />
15-mar-18:45. Currently the SSR fill is approximately 50%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 136.4<br />
and 134.6 K as of 19-Mar-2018. The cold plates, 1 and 2 are 159.6 and<br />
158.2 K. Cryocooler power is 54.9W, cryocooler efficiencies are<br />
0.0339 and 0.0343. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 14-mar-2018 TO 22-mar-2018<br />
TIME RANGE: 2018-03-14T00:00:00.000 -- 2018-03-22T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-18T05:10:00.000 -- 2018-03-18T10:50:00.000 20400.000<br />
2018-03-19T11:05:00.000 -- 2018-03-19T12:00:00.000 3300.0000<br />
2018-03-20T10:35:00.000 -- 2018-03-20T11:30:00.000 3300.0000<br />
2018-03-21T12:00:00.000 -- 2018-03-21T12:40:00.000 2400.0000<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 6<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-14T00:00:00.000 -- 2018-03-15T18:45:00.000 153900.00<br />
2018-03-15T23:55:00.000 -- 2018-03-16T01:10:00.000 4500.0000<br />
2018-03-16T07:20:00.000 -- 2018-03-16T10:45:00.000 12300.000<br />
2018-03-16T18:25:00.000 -- 2018-03-16T18:30:00.000 300.00000<br />
2018-03-17T22:45:00.000 -- 2018-03-18T02:25:00.000 13200.000<br />
2018-03-18T17:05:00.000 -- 2018-03-22T00:00:00.000 284100.00<br />
<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || See above<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-03-21Tohban Report 2018-03-212018-03-21T17:42:33Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 14 March 2018 |end_date = 21 March 2018 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == Solar..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 14 March 2018<br />
|end_date = 21 March 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
No RHESSI flares to count. Maybe an A5 flare for GOES on 20-mar-2018.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
up to 83% on 2018-03-15, and the pointer was jumped to free all of the<br />
memory. This resulted in a Vc3 data gap from, 7-mar-2018 02:25 until<br />
15-mar-18:45. Currently the SSR fill is approximately 50%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 136.4<br />
and 134.6 K as of 19-Mar-2018. The cold plates, 1 and 2 are 159.6 and<br />
158.2 K. Cryocooler power is 54.9W, cryocooler efficiencies are<br />
0.0339 and 0.0343. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 14-mar-2018 TO 22-mar-2018<br />
TIME RANGE: 2018-03-14T00:00:00.000 -- 2018-03-22T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-18T05:10:00.000 -- 2018-03-18T10:50:00.000 20400.000<br />
2018-03-19T11:05:00.000 -- 2018-03-19T12:00:00.000 3300.0000<br />
2018-03-20T10:35:00.000 -- 2018-03-20T11:30:00.000 3300.0000<br />
2018-03-21T12:00:00.000 -- 2018-03-21T12:40:00.000 2400.0000<br />
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000 29400.000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 6<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-03-14T00:00:00.000 -- 2018-03-15T18:45:00.000 153900.00<br />
2018-03-15T23:55:00.000 -- 2018-03-16T01:10:00.000 4500.0000<br />
2018-03-16T07:20:00.000 -- 2018-03-16T10:45:00.000 12300.000<br />
2018-03-16T18:25:00.000 -- 2018-03-16T18:30:00.000 300.00000<br />
2018-03-17T22:45:00.000 -- 2018-03-18T02:25:00.000 13200.000<br />
2018-03-18T17:05:00.000 -- 2018-03-22T00:00:00.000 284100.00<br />
<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || See above<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-02-28Tohban Report 2018-02-282018-02-28T20:00:24Z<p>Jmctiernan: /* Spacecraft Management */</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 21 February 2018<br />
|end_date = 28 February 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 2 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 20-Feb-18 27-Feb-18<br />
<br />
No overlapping RHESSI flares to count.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
between 62 and 25%. Currently the SSR fill is approximately 25% at the<br />
end of passes each day.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 133.8<br />
and 132.1 K as of 25-Feb-2018. The cold plates, 1 and 2 are 158.8 and<br />
157.3 K. Cryocooler power is 64.4W, cryocooler efficiencies are<br />
0.0297 and 0.0300. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 20-feb-2018 TO 28-feb-2018<br />
TIME RANGE: 2018-02-20T00:00:00.000 -- 2018-02-28T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-20T20:45:00.000 -- 2018-02-20T21:05:00.000 1200.0000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-20T15:00:00.000 -- 2018-02-20T15:35:00.000 2100.0000<br />
2018-02-20T20:45:00.000 -- 2018-02-20T21:00:00.000 900.00000<br />
2018-02-21T07:05:00.000 -- 2018-02-21T15:05:00.000 28800.000<br />
2018-02-23T15:10:00.000 -- 2018-02-23T17:30:00.000 8400.0000<br />
2018-02-26T13:35:00.000 -- 2018-02-26T16:00:00.000 8700.0000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 0<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 28.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-02-28Tohban Report 2018-02-282018-02-28T19:31:16Z<p>Jmctiernan: /* Data Gaps */</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 21 February 2018<br />
|end_date = 28 February 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 2 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 20-Feb-18 27-Feb-18<br />
<br />
No overlapping RHESSI flares to count.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
between 62 and 25%. Currently the SSR fill is approximately 25% at the<br />
end of passes each day.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 133.8<br />
and 132.1 K as of 25-Feb-2018. The cold plates, 1 and 2 are 158.8 and<br />
157.3 K. Cryocooler power is 64.4W, cryocooler efficiencies are<br />
0.0297 and 0.0300. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 20-feb-2018 TO 28-feb-2018<br />
TIME RANGE: 2018-02-20T00:00:00.000 -- 2018-02-28T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-20T20:45:00.000 -- 2018-02-20T21:05:00.000 1200.0000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-20T15:00:00.000 -- 2018-02-20T15:35:00.000 2100.0000<br />
2018-02-20T20:45:00.000 -- 2018-02-20T21:00:00.000 900.00000<br />
2018-02-21T07:05:00.000 -- 2018-02-21T15:05:00.000 28800.000<br />
2018-02-23T15:10:00.000 -- 2018-02-23T17:30:00.000 8400.0000<br />
2018-02-26T13:35:00.000 -- 2018-02-26T16:00:00.000 8700.0000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 0<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-02-28Tohban Report 2018-02-282018-02-28T18:21:13Z<p>Jmctiernan: /* Spacecraft Status */</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 21 February 2018<br />
|end_date = 28 February 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 2 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 20-Feb-18 27-Feb-18<br />
<br />
No overlapping RHESSI flares to count.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
between 62 and 25%. Currently the SSR fill is approximately 25% at the<br />
end of passes each day.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 133.8<br />
and 132.1 K as of 25-Feb-2018. The cold plates, 1 and 2 are 158.8 and<br />
157.3 K. Cryocooler power is 64.4W, cryocooler efficiencies are<br />
0.0297 and 0.0300. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 20-feb-2018 TO 28-feb-2018<br />
TIME RANGE: 2018-02-20T00:00:00.000 -- 2018-02-28T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-20T20:45:00.000 -- 2018-02-20T21:05:00.000 1200.0000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-20T15:00:00.000 -- 2018-02-20T15:35:00.000 2100.0000<br />
2018-02-20T20:45:00.000 -- 2018-02-20T21:00:00.000 900.00000<br />
2018-02-21T07:05:00.000 -- 2018-02-21T15:05:00.000 28800.000<br />
2018-02-23T15:10:00.000 -- 2018-02-23T17:30:00.000 8400.0000<br />
2018-02-26T13:35:00.000 -- 2018-02-26T16:00:00.000 8700.0000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-26T05:15:00.000 -- 2018-02-26T09:55:00.000 16800.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-02-28Tohban Report 2018-02-282018-02-28T18:20:18Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 21 February 2018 |end_date = 28 February 2018 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} ==..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 21 February 2018<br />
|end_date = 28 February 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 2 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 20-Feb-18 27-Feb-18<br />
<br />
No overlapping RHESSI flares to count.<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
between 62 and 25%. Currently the SSR fill is approximately 25% at the<br />
end of passes each day.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3 and 8 are recording events. The cold tips are 133.8<br />
and 132.1 K as of 29-Jan-2018. The cold plates, 1 and 2 are 158.8 and<br />
157.3 K. Cryocooler power is 64.4W, cryocooler efficiencies are<br />
0.0297 and 0.0300. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 20-feb-2018 TO 28-feb-2018<br />
TIME RANGE: 2018-02-20T00:00:00.000 -- 2018-02-28T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-20T20:45:00.000 -- 2018-02-20T21:05:00.000 1200.0000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 5<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-20T15:00:00.000 -- 2018-02-20T15:35:00.000 2100.0000<br />
2018-02-20T20:45:00.000 -- 2018-02-20T21:00:00.000 900.00000<br />
2018-02-21T07:05:00.000 -- 2018-02-21T15:05:00.000 28800.000<br />
2018-02-23T15:10:00.000 -- 2018-02-23T17:30:00.000 8400.0000<br />
2018-02-26T13:35:00.000 -- 2018-02-26T16:00:00.000 8700.0000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-02-26T05:15:00.000 -- 2018-02-26T09:55:00.000 16800.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3 and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-01-31Tohban Report 2018-01-312018-01-31T18:35:22Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 24 January 2018 |end_date = 31 January 2018 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == S..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 24 January 2018<br />
|end_date = 31 January 2018<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 24-Jan-18 31-Jan-18<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
between 0 and 35%. Currently the SSR fill is approximately 20% at the<br />
end of passes each day.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 3, 6, and 8 are recording events. The cold tips are 133.4<br />
and 131.6 K as of 29-Jan-2018. The cold plates, 1 and 2 are 158.7 and<br />
157.3 K. Cryocooler power is 64.3W, cryocooler efficiencies are<br />
0.0302 and 0.0306. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 24-jan-2018 TO 31-jan-2018<br />
TIME RANGE: 2018-01-24T00:00:00.000 -- 2018-01-31T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-01-25T13:50:00.000 -- 2018-01-25T13:55:00.000 300.00000<br />
2018-01-25T20:20:00.000 -- 2018-01-25T20:25:00.000 300.00000<br />
2018-01-28T15:15:00.000 -- 2018-01-28T15:20:00.000 300.00000<br />
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2018-01-29T08:35:00.000 -- 2018-01-29T10:50:00.000 8100.0000<br />
2018-01-30T05:45:00.000 -- 2018-01-31T00:00:00.000 65700.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 3, 6, and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week. <br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2018-01-03Tohban Report 2018-01-032018-01-10T18:03:59Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 27 December 2017 |end_date = 3 January 2018 |tohban_name = Jim McTiernan, Martin Fivian (Jan 2-3) |tohban_email = jimm@ssl.berkeley.edu |ne..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 27 December 2017<br />
|end_date = 3 January 2018<br />
|tohban_name = Jim McTiernan, Martin Fivian (Jan 2-3)<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 2 0 0 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
There were RHESSI flares/GOES flares 2 / 2<br />
over the time range 27-Dec-17 03-Jan-18<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, SSR fill was<br />
between 38.8 and 63.9%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 134.3<br />
and 132.5 K as of 27-Dec-2017. The cold plates, 1 and 2 are 160.0 and<br />
158.6 K. Cryocooler power is 73.8W, cryocooler efficiencies are<br />
0.0268 and 0.0272. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and<br />
accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 27-dec-2017 TO 3-jan-2018<br />
TIME RANGE: 2017-12-27T00:00:00.000 -- 2018-01-03T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 4<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-12-28T13:45:00.000 -- 2017-12-28T13:50:00.000 300.00000<br />
2017-12-28T14:10:00.000 -- 2017-12-28T14:15:00.000 300.00000<br />
2017-12-29T13:45:00.000 -- 2017-12-29T13:50:00.000 300.00000<br />
2018-01-02T10:05:00.000 -- 2018-01-02T10:15:00.000 600.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-12-28T14:10:00.000 -- 2017-12-28T14:15:00.000 300.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-12-27T05:45:00.000 -- 2017-12-27T05:55:00.000 600.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-12-13Tohban Report 2017-12-132017-12-13T18:44:23Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 6 December 2017 |end_date = 13 December 2017 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == ..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 6 December 2017<br />
|end_date = 13 December 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet...<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 3 0 0 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
There were RHESSI flares/GOES flares 1 / 3<br />
over the time range 05-Dec-17 12-Dec-17<br />
<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level now 57%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 133.9<br />
and 132.1 K as of 11-Dec-2017. The cold plates, 1 and 2 are 160.2 and<br />
158.8 K. Cryocooler power is 74.0W, cryocooler efficiencies are<br />
0.0268 and 0.0272. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 7-dec-2017 TO 13-dec-2017<br />
TIME RANGE: 2017-12-07T00:00:00.000 -- 2017-12-13T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-12-08T21:00:00.000 -- 2017-12-08T22:45:00.000 6300.0000<br />
2017-12-12T22:20:00.000 -- 2017-12-13T00:00:00.000 6000.0000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-12-08T15:15:00.000 -- 2017-12-08T15:35:00.000 1200.0000<br />
2017-12-08T21:00:00.000 -- 2017-12-08T22:40:00.000 6000.0000<br />
2017-12-10T14:15:00.000 -- 2017-12-10T16:15:00.000 7200.0000<br />
2017-12-11T15:20:00.000 -- 2017-12-11T15:45:00.000 1500.0000<br />
2017-12-12T14:50:00.000 -- 2017-12-12T15:15:00.000 1500.0000<br />
2017-12-12T22:20:00.000 -- 2017-12-13T00:00:00.000 6000.0000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-12-08T02:35:00.000 -- 2017-12-08T06:10:00.000 12900.000<br />
2017-12-11T06:40:00.000 -- 2017-12-11T09:35:00.000 10500.000<br />
2017-12-11T10:55:00.000 -- 2017-12-13T00:00:00.000 133500.00<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No<br />
threshold changes or HV changes this past week. The thin attenuator<br />
came in on 10-Dec-2017, at approximately 22:58. The attenuator dead<br />
time thresholds were changed on 12-Dec-2017, to take into account the<br />
increased G3 background deadtime (currently 30.6%). Both thick and<br />
thin attenuators came out after the increase. The commanding was done<br />
2017-346-20:34:12 UTC.<br />
<br />
The new thresholds are:<br />
<br />
0.00 Min A0<br />
35.69 Max A0<br />
32.16 Min A1<br />
37.65 Max A1<br />
31.37 Min A2<br />
45.49 Max A2<br />
32.94 Min A3<br />
100.0 Max A3<br />
<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 35.x%<br />
|-<br />
| Detector problems? || See above<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-11-29Tohban Report 2017-11-292017-11-29T19:13:07Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 22 November 2017<br />
|end_date = 29 November 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
QUIET!<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 21-Nov-17 28-Nov-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level typically below 20%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.6 and 130.8 K as of 6-nov-2017. The cold plates, 1 and 2 are 157.1 and 155.6 K.<br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0264 and 0.0277. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 23-nov-2017 to 29-nov-2017<br />
TIME RANGE: 2017-11-23T00:00:00.000 -- 2017-11-29T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:25:00.000 900.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-24T09:45:00.000 -- 2017-11-24T09:55:00.000 600.00000<br />
2017-11-25T09:05:00.000 -- 2017-11-25T09:15:00.000 600.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week. The attenuator dead time threshold was reduced to 18% on 22 November.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 18.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-11-29Tohban Report 2017-11-292017-11-29T19:08:38Z<p>Jmctiernan: /* Data Gaps */</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 22 November 2017<br />
|end_date = 29 November 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
QUIET!<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 21-Nov-17 28-Nov-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level typically below 20%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.6 and 130.8 K as of 6-nov-2017. The cold plates, 1 and 2 are 157.1 and 155.6 K.<br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0264 and 0.0277. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 23-nov-2017 to 29-nov-2017<br />
TIME RANGE: 2017-11-23T00:00:00.000 -- 2017-11-29T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:25:00.000 900.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-24T09:45:00.000 -- 2017-11-24T09:55:00.000 600.00000<br />
2017-11-25T09:05:00.000 -- 2017-11-25T09:15:00.000 600.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 18.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-11-29Tohban Report 2017-11-292017-11-29T19:07:54Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 22 November 2017<br />
|end_date = 29 November 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
QUIET!<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 21-Nov-17 28-Nov-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level typically below 20%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.6 and 130.8 K as of 6-nov-2017. The cold plates, 1 and 2 are 157.1 and 155.6 K.<br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0264 and 0.0277. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 23-nov-2017 to 29-nov-2017<br />
TIME RANGE: 2017-11-23T00:00:00.000 -- 2017-11-29T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:25:00.000 900.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-24T09:45:00.000 -- 2017-11-24T09:55:00.000 600.00000<br />
2017-11-25T09:05:00.000 -- 2017-11-25T09:15:00.000 600.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 18.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-11-29Tohban Report 2017-11-292017-11-29T18:40:15Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 22 November 2017<br />
|end_date = 29 November 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
QUIET!<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 21-Nov-17 28-Nov-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level typically below 20%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.6 and 130.8 K as of 6-nov-2017. The cold plates, 1 and 2 are 157.1 and 155.6 K.<br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0264 and 0.0277. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 23-nov-2017 to 29-nov-2017<br />
TIME RANGE: 2017-11-23T00:00:00.000 -- 2017-11-29T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:25:00.000 900.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-24T09:45:00.000 -- 2017-11-24T09:55:00.000 600.00000<br />
2017-11-25T09:05:00.000 -- 2017-11-25T09:15:00.000 600.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 23.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-11-29Tohban Report 2017-11-292017-11-29T18:39:51Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 22 November 2017<br />
|end_date = 29 November 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
QUIET!<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 21-Nov-17 28-Nov-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level typically below 20%.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.6 and 130.8 K as of 6-nov-2017. The cold plates, 1 and 2 are 157.1 and 155.6 K.<br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0264 and 0.0277. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 23-nov-2017 to 29-nov-2017<br />
TIME RANGE: 2017-11-23T00:00:00.000 -- 2017-11-29T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:25:00.000 900.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-24T09:45:00.000 -- 2017-11-24T09:55:00.000 600.00000<br />
2017-11-25T09:05:00.000 -- 2017-11-25T09:15:00.000 600.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 23.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-11-29Tohban Report 2017-11-292017-11-29T18:38:08Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 22 November 2017<br />
|end_date = 29 November 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
QUIET!<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 21-Nov-17 28-Nov-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level typically below 20%, but now 57%, due to a pointer jump perhaps.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.6 and 130.8 K as of 6-nov-2017. The cold plates, 1 and 2 are 157.1 and 155.6 K.<br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0264 and 0.0277. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 23-nov-2017 to 29-nov-2017<br />
TIME RANGE: 2017-11-23T00:00:00.000 -- 2017-11-29T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:25:00.000 900.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-24T09:45:00.000 -- 2017-11-24T09:55:00.000 600.00000<br />
2017-11-25T09:05:00.000 -- 2017-11-25T09:15:00.000 600.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || Yes, to replay data<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 23.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-11-29Tohban Report 2017-11-292017-11-29T18:36:08Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 22 November 2017 |end_date = 29 November 2017 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} ==..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 22 November 2017<br />
|end_date = 29 November 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
QUIET!<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
RHESSI flare list contains 0<br />
over the time range 21-Nov-17 28-Nov-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level typically below 20%, but now 57%<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.6 and 130.8 K as of 6-nov-2017. The cold plates, 1 and 2 are 157.1 and 155.6 K.<br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0264 and 0.0277. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 23-nov-2017 to 29-nov-2017<br />
TIME RANGE: 2017-11-23T00:00:00.000 -- 2017-11-29T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:25:00.000 900.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-23T18:10:00.000 -- 2017-11-23T18:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 3<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-24T09:45:00.000 -- 2017-11-24T09:55:00.000 600.00000<br />
2017-11-25T09:05:00.000 -- 2017-11-25T09:15:00.000 600.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 23.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_8Detector 82017-11-08T18:42:47Z<p>Jmctiernan: </p>
<hr />
<div>'This page contains information about changes/issues for RHESSI detector 8 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: [[Detector 8 anneal 2012]]<br />
<br />
===Post 2014 Anneal===<br />
<br />
Detector 8 is SEGMENTED after the 2014 anneal!<br />
<br />
On March 13, 2015 the rear fast threshold was changed.<br />
<br />
15-072-22:05:41 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-072-22:05:56 /IDPLOAD VALUE=0x55<br />
<br />
* On April 7 2015, the rear fast threshold was changed due to extremely low livetime in the rear segment. It is not clear if this helped; the action will probably be repeated.<br />
<br />
15-097-19:57:24 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-097-19:57:37 /IDPLOAD VALUE=0x70 ; was 0x65<br />
<br />
* On April 9 2015, the rear fast threshold was changed due to low livetime in the rear segment.<br />
<br />
15-099-17:38:09 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-099-17:38:23 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* On April 13 at 17:47UT we changed the Rear Fast threshold for detector 8.<br />
<br />
15-103-17:46:36 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-103-17:46:47 /IDPLOAD VALUE=0x90 ; was 0x80<br />
<br />
* On April 14 at 17:25 UT we changed the Rear Fast threshold for detector 8.<br />
<br />
15-104-17:25:11 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-104-17:25:22 /IDPLOAD VALUE=0xA0 ; was 0x90<br />
<br />
* On April 24 at 19:14 UT Rear Fast Threshold was increased.<br />
<br />
15-114-19:14:10 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-114-19:14:20 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
* On May 4 at 20:49 UT Rear Fast Threshold was increased<br />
<br />
15-124-20:49:54 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-124-20:50:09 /IDPLOAD VALUE=0xC0 ; was 0xB0<br />
<br />
* On May 15 the front slow threshold was increased<br />
<br />
2015-135-21:36:06 /IDPUTABLE8 OFFSET=FRONTSLOWDAC <br />
2015-135-21:36:25 /IDPLOAD VALUE=0x15 ; was 0x0C<br />
<br />
* On June 11 2015 the front fast threshold was raised because the fast rates were high and the livetime was low. This action was NOT successful in reducing the fast rates -- they dropped ever so slightly but not much. Therefore, the livetime remained low.<br />
<br />
* Late July 2015: D8 rear has not been returning good data since mid-May, but it was noticed that its fast threshold was never turned up all the way. On July 24 2015 the rear fast threshold was maxed out to see if that recovered a usable level of events from this detector. Unfortunately, it was not successful. <br />
2015-205-17:21:40 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
2015-205-17:21:50 /IDPLOAD VALUE=0xFF ; was 0xD0<br />
<br />
* 15 September 2015: The front slow threshold was raised to try to eliminate low energy noise counts.<br />
2015-258-17:09:51 /IDPUTABLE8 OFFSET=frontslowDAC<br />
2015-258-17:10:22 /IDPLOAD VALUE=0x20 ; was 0x15<br />
<br />
* On October 28 in an attempt to lower the high reset rates and the front slow counts registered the HV on the detector was changed to ~2181.<br />
2015-301-20:29:56 /ihvdac detector=8, voltage=112<br />
<br />
* November 14, HV dropped by 400V to 1789V<br />
<br />
2015-318-07:02:37 /ihvdac detector=8, voltage=92<br />
<br />
* November 23, HV dropped by 400 V to 1400 V in an attempt to reduce noise<br />
<br />
2015-327-22:09:13 /ihvdac detector=8, voltage=72 ; (now 1397.1 V)<br />
<br />
* December 28, D8 events were turned off; rear ULD events were filling memory<br />
<br />
2015-362-10:52:03 /itmoff value=dib8<br />
2015-362-10:52:09 start sc_tbl_loadpkt("T15362SLTN61_No_G3_G4_G8_G9.01")<br />
<br />
===Post 2016 Anneal===<br />
<br />
Detector 8 is SEGMENTED after the 2016 anneal!<br />
<br />
* 2016-05-24: D8 rear is mimicing the light leak behavior seen in D3 although this has not previously been seen in D8. Its possible we see the light leak here because of other detectors being turned off<br />
16-145-16:18:03 start idib_chg_thrshld(8, REAR, FAST, 0x60)<br />
16-145-16:18:07 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-145-16:18:07 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
16-145-16:18:16 /IDPULOAD VALUE=0x60<br />
<br />
* 2016-08-15: Light leak threshold changes<br />
16-228-22:52:25 start idib_chg_thrshld(8, REAR, FAST, 0x68) <br />
16-228-22:52:28 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-228-22:52:28 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
16-228-22:52:34 /IDPULOAD VALUE=0x68<br />
<br />
* 2016-10-07: Rear fast threshold increase for dead time<br />
2016-281-20:39:12 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
2016-281-20:39:22 /IDPULOAD VALUE=0x80<br />
<br />
* 2016-10-09: Threshold changes to reduce dead time<br />
16-283-19:43:43 start idib_chg_thrshld(8, FRONT, SLOW, 0x30)<br />
16-283-19:43:47 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-283-19:43:47 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
16-283-19:43:55 /IDPULOAD VALUE=0x30<br />
16-283-19:44:00 start write_ssr_info<br />
<br />
16-283-19:44:16 start idib_chg_thrshld(8, FRONT, FAST, 0x40)<br />
16-283-19:44:20 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-283-19:44:20 /IDPUTABLE8 OFFSET=FRONTFASTDAC<br />
16-283-19:44:24 /IDPULOAD VALUE=0x40<br />
<br />
16-283-19:44:45 start idib_chg_thrshld(8, REAR, FAST, 0xA0)<br />
16-283-19:44:48 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-283-19:44:48 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
16-283-19:44:58 /IDPULOAD VALUE=0xA0<br />
<br />
* 2016-10-10: Reverted front slow threshold, not much effect on dead time<br />
16-284-22:33:32 start idib_chg_thrshld(8, FRONT, SLOW, 0x0C)<br />
16-284-22:33:36 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-284-22:33:36 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
16-284-22:33:47 /IDPULOAD VALUE=0x0C<br />
<br />
* 2016-10-11: Lowered HV to 3000V to decrease dead time, worked pretty well<br />
16-285-18:48:24 /ihvdac detector=8, voltage=0x9A<br />
<br />
* 2016-10-13: Turned off this detector<br />
Turn off detector 8 <br />
16-287-16:14:04 /itmoff value=8<br />
16-287-16:14:57 /ihvdac detector=8,voltage=0<br />
16-287-16:16:53 /idibpwroff value=8<br />
<br />
* 2017-01-17: Turned on<br />
<br />
2017-017-18:38:37 start idib_on_g8<br />
2017-017-18:39:29 start ihv_ramp_stage1_g8 ; 171 V<br />
<br />
2017-017-20:14:00 start ihv_ramp_stage2_g8 ; 1000 V<br />
<br />
2017-017-21:52:46 start ihv_ramp_stage3_g8 ; 2000 V<br />
<br />
2017-017-23:32:39 start ihv_ramp_stage4_g8 ; 3000 V<br />
<br />
2017-017-23:39:40 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
2017-017-23:39:56 /IDPULOAD VALUE=0x15 ; was 0x0C<br />
<br />
2017-018-01:14:25 /IDPUTABLE8 OFFSET=FRONTFASTDAC<br />
2017-018-01:14:31 /IDPULOAD VALUE=0x60 ; was 0x40<br />
<br />
2017-018-01:15:22 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
2017-018-01:15:28 /IDPULOAD VALUE=0x1C ; was 0x15<br />
<br />
* 2017 Jan 19: switched off<br />
<br />
* 2017 April 3: Turned on in response to high solar activity. HV was raised to ~1000V at 16:25 and then up to ~2000V at 19:45 UT.<br />
<br />
* 2017 April 17. D8 events were turned on; Front Fast threshold was adjusted<br />
2017-107-21:31:35 start idib_on_g8<br />
2017-107-21:32:20 start ihv_ramp_stage2_g8 ; 1000 V<br />
2017-107-23:09:58 start ihv_ramp_stage3_g8<br />
17-108-00:40:32 start idib_chg_thrshld(8, FRONT, FAST, 0x90)<br />
<br />
* 2017 April 25: Raised front fast threshold from 0x90 to 0xB0, increased live time from 2.7% to 73%<br />
<br />
2017-116-00:08:38 /IDPUTABLE8 OFFSET=FRONTFASTDAC<br />
2017-116-00:08:48 /IDPULOAD VALUE=0xA0 ; was 0x90<br />
<br />
2017-116-00:09:33 /IDPUTABLE8 OFFSET=FRONTFASTDAC<br />
2017-116-00:09:41 /IDPULOAD VALUE=0xB0 ; was 0xA0<br />
<br />
* 2017 August 16: Raised front slow threshold to reduce low-energy noise<br />
17-228-19:55:15 start idib_chg_thrshld(8,FRONT,SLOW,0x20)<br />
17-228-19:55:19 /IDPUDUMPTABL TABLE=DIBTBL8<br />
17-228-19:55:19 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
17-228-19:55:26 /IDPULOAD VALUE=0x20<br />
<br />
* 2017 November 3: Raised rear fast threshold to 0xFF<br />
<br />
17-307-16:32:21 start idib_chg_thrshld(8,rear,fast,0xFF) ; was 0xC0<br />
17-307-16:32:25 /IDPUDUMPTABL TABLE=DIBTBL8<br />
17-307-16:32:25 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
17-307-16:32:37 /IDPULOAD VALUE=0xFF<br />
<br />
<br />
<br />
===D8 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C<br />
|- <br />
| 2015-May-15 21:36:25|| 0x15 (was 0x0C)<br />
|- <br />
| 2015-Sep-15 17:35|| 0x20 (was 0x15)<br />
|- <br />
| post 2016 anneal || 0x0C<br />
|-<br />
| 2017-Aug-16 19:55:26 || 0x20<br />
|-<br />
| 2016-10-09 19:43:55 || 0x30 (Was 0x0C)<br />
|-<br />
| 2016-10-10 22:33:47 || 0x0C (Was 0x30)<br />
|-<br />
| 2017-01-17 01:15:28 || 0x1C (Was 0x15)<br />
|-<br />
<br />
|}<br />
<br />
===D8 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22<br />
|- <br />
| 2015-Jun-11 20:18:18 || 0x30 (was 0x22)<br />
|- <br />
| 2015-Jul-31 21:41:31 || 0x40 (was 0x30)<br />
|- <br />
| 2015-Aug-03 20:31:56 || 0x50 (was 0x40)<br />
|- <br />
| 2015-Aug-28 17:35:18 || 0x60 (was 0x50)<br />
|- <br />
| post 2016 anneal || 0x22<br />
|- <br />
| 2016-10-09 19:44:24 || 0x40 (was 0x22)<br />
|- <br />
| 2016-01-17 01:14:31 || 0x60 (was 0x40)<br />
|-<br />
| 2017-04-18 00:40:32 || 0x90 (was 0x60)<br />
|-<br />
| 2017-04-26 00:09:41 || 0xB0 (was 0x90)<br />
|-<br />
| 2017-05-09 19:08:43 || 0xE0 (was 0xC0)<br />
|}<br />
<br />
===D8 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30<br />
|- <br />
| post 2016 anneal || 0x30<br />
|}<br />
<br />
===D8 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45<br />
|- <br />
| 2015-Mar-13 22:05:56 || 0x55 (was 0x45)<br />
|- <br />
| 2015-Mar-25 19:30:35 || 0x65 (was 0x55)<br />
|- <br />
| 2015-Apr-07 19:58 || 0x70 (was 0x65)<br />
|- <br />
| 2015-Apr-09 17:38:23 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Apr-13 17:46:47 || 0x90 (was 0x80)<br />
|-<br />
| 2015-Apr-14 17:25:22 || 0xA0 (was 0x90)<br />
|- <br />
| 2015-Apr-24 19:14:20 || 0xB0 (was 0xA0)<br />
|-<br />
|2015-May-04 20:49:54 || 0xC0 (was 0xB0)<br />
|-<br />
|2015-Jul-24 17:21:50 || 0xFF (was 0xD0)<br />
|- <br />
| post 2016 anneal || 0x45<br />
|-<br />
| 2016-May-24 16:18:16 || 0x60 (was 0x45)<br />
|-<br />
| 2016-Aug-15 22:52:28 || 0x68 (was 0x60)<br />
|-<br />
| 2016-10-07 19:44:58 UTC || 0x80 (was 0x68)<br />
|-<br />
| 2016-10-09 20:39:22 UTC || 0xA0 (was 0x80)<br />
|-<br />
| 2017-05-09 19:09:28 UTC || 0xC0 (was 0xA0)<br />
|-<br />
| 2017-Nov-03 16:32:21 || 0xFF (was 0xC0)<br />
|}<br />
<br />
===D8 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 3995 V<br />
|-<br />
|2015-May-8 22:33:30 || 3554 V (was 3995 V)<br />
|-<br />
|2015-May-12 21:03:52 || 2573 V (was 3554 V)<br />
|-<br />
|2015-Oct-28 20:29:56 || 2181 V (was 2573 V)<br />
|-<br />
|2015-11-14 07:02:37 || 1789 V (was 2179 V)<br />
|-<br />
|2015-11-23 22:09:13 || 1397 V (was 1789 V)<br />
|- <br />
| post 2016 anneal || 4019 V<br />
|-<br />
| 2016-10-11 18:48:24 || 2990 V (was 4000 V)<br />
|-<br />
| 2016-Oct-13 16:14:04 || 0V<br />
|-<br />
| 2017-01-17 23:32:29 || 3000 V (was OFF)<br />
|-<br />
| 2017-Jan-19 || 0V <br />
|-<br />
| 2017-Apr-3 || 2000 V<br />
|-<br />
| 2017-Apr-11 || 0 V<br />
|-<br />
| 2017-Apr-18 || 2000 V<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_6Detector 62017-11-08T18:41:12Z<p>Jmctiernan: </p>
<hr />
<div>This page contains information about changes/issues for RHESSI detector 6 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: [[Detector 6 anneal 2012]]<br />
<br />
===Notes===<br />
<br />
After the 2014 anneal, detector 6 began its reincarnated life as an unsegmented detector but segmented shortly after (see below).<br />
<br />
<br />
* On 2014 August 14, the HV on D6 was raised to 4926V in an attempt to segment it. This was successful, and D6 now operates as a segmented detector. Since its segmentation is borderline as of Aug/Sept 2014, it commonly unsegments during and just after the SAA.<br />
<br />
* On 2014 Jan 8, the rear fast threshold was raised since fast counts were eating up a lot of livetime.<br />
<br />
15-008-17:44:55 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
15-008-17:45:18 /IDPULOAD VALUE=0x50 ;(was 0x45)<br />
<br />
* * D6 has been showing some strange peaks in the spectrum; these are best seen as multiple lines (that drift) in spectrograms. On Monday, Jan 28 we raised the slow front threshold on D6 to ~10 keV and kept it there for a day before returning to the nominal ~3 keV. This is intended to see if the slow threshold affects the abnormal spectral lines.<br />
15-026-21:57:13 / D6 front slow threshold to 0x30 (was 0x0C).<br />
15-027-21:37:03 / D6 front slow threshold to 0x0C (was 0x30).<br />
<br />
<br />
* D6 fast rates are a bit high (have been rising slowly over the past week). It would be a good idea to raise the front fast threshold a touch. I didn't want to do this at the same time as the slow threshold experiment! <br />
<br />
*D6 front fast threshold was adjusted from default (0x22) due to increased rates, based on the above suggestion. Rates dropped from 3300 to 1250 when the change was made.<br />
15-030-00:19:54 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-030-00:20:17 /IDPLOAD VALUE=0x30 ; was 0x22<br />
<br />
* On 2015 February 27 Front Fast threshold was raised <br />
15-058-21:41:11 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-058-21:41:44 /IDPLOAD VALUE=0x40 (was 0x30)<br />
<br />
*Another raise to D6 front fast threshold on 2015 March 9:<br />
15-068-01:26:56 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-068-01:27:07 /IDPLOAD VALUE=0x50<br />
<br />
*On 2015 March 13 another raise was made to D6 front fast threshold and a raise of the rear fast threshold was made:<br />
15-072-22:04:01 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-072-22:04:22 /IDPLOAD VALUE=0x60<br />
<br />
15-072-22:05:07 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
15-072-22:05:17 /IDPLOAD VALUE=0x60<br />
<br />
*Again 2015 March 17 D6 front fast threshold was increased:<br />
15-076-20:44:01 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-076-20:44:14 /IDPLOAD VALUE=0x70<br />
<br />
On 2015 March 20 D6 HV was dropped in two 10 step increments, twice. Also we attempted to lower the front fast threshold to 0x50, but changed this almost immediately when the live time dropped to 3%:<br />
15-079-21:10:49 /IHVDAC DETECTOR=6, VOLTAGE=243<br />
15-079-21:12:47 /IHVDAC DETECTOR=6, VOLTAGE=233<br />
<br />
15-079-22:49:23 /ihvdac detector=6, voltage=223<br />
15-079-22:50:44 /ihvdac detector=6, voltage=213<br />
<br />
15-079-22:52:39 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:52:58 /IDPLOAD VALUE=0x60<br />
<br />
15-079-22:55:07 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:55:19 /IDPLOAD VALUE=0x50<br />
<br />
15-079-22:55:53 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:56:01 /IDPLOAD VALUE=0x70<br />
<br />
On 2015 March 25 D6 HV was dropped in 20 steps. <br />
15-084-22:45:15 /ihvdac detector=6, voltage=203<br />
15-084-22:46:45 /ihvdac detector=6, voltage=193 (3750 V)<br />
<br />
* April 7 2015: the front fast threshold was raised due to high fast rates that were significantly reducing livetime. This helped, but not a lot, so the action will probably be repeated soon.<br />
15-097-19:56:35 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-097-19:56:45 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* April 9 2015: The front fast and the front slow threshold were raised up to recover the livetime and trying to reduce the noise on the slow valid counts.<br />
<br />
15-099-17:32:59 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-099-17:33:11 /IDPLOAD VALUE=0xA0<br />
<br />
15-099-21:17:16 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-099-21:17:27 /IDPLOAD VALUE=0x15<br />
<br />
* On April 14 starting at 14:06 UT we made the next changes for detectors 6 trying to decrease valid counts on the Slow Front segment.<br />
<br />
15-104-14:11:57 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-104-14:12:05 /IDPLOAD VALUE=0xA8<br />
15-104-15:45:14 /IDPLOAD VALUE=0xB0<br />
15-104-15:46:24 /IDPLOAD VALUE=0xB8<br />
15-104-15:47:36 /IDPLOAD VALUE=0xB0<br />
<br />
15-104-15:49:18 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-104-15:49:25 /IDPLOAD VALUE=0x1A<br />
15-104-15:50:30 /IDPLOAD VALUE=0x1F<br />
15-104-15:52:06 /IDPLOAD VALUE=0x15<br />
<br />
* On May 21 starting at 19:23 UTC we made the next changes on Front Slow threshold:<br />
<br />
15-141-19:25:36 start idib_chg_thrshld (6, FRONT, SLOW, 0x20) --> Was 0x15<br />
15-141-19:25:46 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-141-19:25:47 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-141-19:25:55 /IDPLOAD VALUE=0x20<br />
<br />
* On May 26 we lowered the HV on detector 6 by 30 counts to a value of 1984 V. This change gave detector 6 the lowest voltage of all the detectors. G6 remained segmented through the pass.<br />
<br />
2015-146-19:11:11 /IHVDAC DETECTOR=6, VOLTAGE=103 (1985 V)<br />
<br />
We also increased the rear fast threshold on detector 6 by 0x08<br />
<br />
2015-146-19:13:07 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-146-19:13:25 /IDPLOAD VALUE=0x68 ; was 0x60<br />
<br />
* On 2015 July 7, D6 rear fast threshold was raised due to decreased livetime<br />
<br />
2015-188-18:49:02 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-188-18:49:19 /IDPLOAD VALUE=0x70 ; was 0x68<br />
<br />
* The rear fast threshold was changed on July 13 2015 due to dropping livetime in the rear:<br />
2015-194-16:34:40 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-194-16:34:52 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* The rear fast threshold was changed on July 24 2015 due to low livetime. However, the change probably wasn't needed; the tohban hadn't noticed that a change had already been made a few days ago. The next tohban can reverse the change if desired.<br />
2015-205-17:19:29 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-205-17:19:45 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
* Aug. 24, 2015: Detector 6: Both front and rear fast thresholds were raised again. This successfully brought the livetime up to 75% in the front, but didn't really change anything in the rear. Another attempt was made with the rear fast threshold, but again no change. The slow threshold was also raised, which brought the slow rates down from 200k to 5k.<br />
<br />
2015-236-20:44:59 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2015-236-20:45:10 /IDPLOAD VALUE=0xD0 ; was 0xB0<br />
<br />
2015-237-00:02:53 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-237-00:03:04 /IDPLOAD VALUE=0x25 ; was 0x20<br />
<br />
2015-236-20:47:27 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-236-20:47:36 /IDPLOAD VALUE=0xC0 ; was 0xB0<br />
<br />
2015-237-00:04:26 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-237-00:04:34 /IDPLOAD VALUE=0xD0 ; was 0xC0<br />
<br />
* Detector 6 was showing elevated slow front rates. We made a HV change on August 28, lowering the voltage by 200V. The change made the slow front rates to decrease, but still the detector shows elevated slow front counts. On August 31, the rear fast threshold was raised to increase the detector livetime.<br />
<br />
2015-240-17:32:26 /ihvdac detector=6, voltage=93 (from 1984 to 1789 V)<br />
<br />
2015-243-18:01:47 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-243-18:01:56 /IDPLOAD VALUE=0xE0 ; was 0xD0 <br />
<br />
* The rear fast threshold was changed on Sep 9 2015 due to low livetime.<br />
<br />
2015-252-17:53:05 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-252-17:53:18 /IDPLOAD VALUE=0xF0 ; was 0xF0<br />
<br />
* On September 14 2015 we raised the rear fast threshold on D6 from 0xF0 to 0xFF and on September 15 we raised the RHESSI D6 front slow threshold from 0x25 to 0x30.<br />
<br />
2015-257-17:35:39 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-257-17:35:49 /IDPLOAD VALUE=0xFF ; was 0xF0<br />
<br />
2015-258-17:09:29 /IDPUTABLE6 OFFSET=frontslowDAC<br />
2015-258-17:09:38 /IDPLOAD VALUE=0x30 ; was 0x25<br />
<br />
* 2nd October 2015: We increased the front slow thresholds, on detectors G3 and G6. <br />
<br />
15-278-21:29:49 start idib_chg_thrshld(6, FRONT, SLOW, 0x40) ; was 0x30<br />
15-278-21:29:53 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-278-21:29:53 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-278-21:30:03 /IDPLOAD VALUE=0x40<br />
<br />
* 5th October 2015: We increased the front slow thresholds G6<br />
<br />
15-279-00:40:54 start idib_chg_thrshld (6, FRONT, SLOW, 0x50) ; was 0x40<br />
15-279-00:40:58 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-279-00:40:58 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-279-00:41:08 /IDPLOAD VALUE=0x50<br />
<br />
* On October 8, the front fast threshold was raised to try and raise livetime. Prior to these changes, D6 front livetime was at ~20%. As the changes were made on a BGS pass, the D6 front fast rates fell from 100k to 9000, and the front LT rose to 78%, but then worsened a lot the next day, so more action was taken (see next item).<br />
<br />
2015-281-21:49:49 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2015-281-21:49:59 /IDPLOAD VALUE=0xFF ; was 0xE0<br />
<br />
* On October 12, the HV on detector 6 was dropped by 200V, to ~1600V. The reasons for this: D6 front livetime had plummeted, and the fast threshold was already maxed. I considered raising the slow threshold but concluded that this is unlikely to help the problem -- the previous two slow threshold raises did no good at all, spectrograms have shown that the event noise is across the energy spectrum, not exclusively at low energies, and right now it's clearly the high fast rates that are eating up all the livetime, not the slows. So something is necessary to reduce fast rates, and an HV drop is the only shot at that. This also may help some of the other issues with D6. A first look at the results indicates that this change was successful in reducing fast rates and raising livetime. Hooray! Livetime is at ~80% after the voltage drop. Continue to watch this detector.<br />
<br />
2015-285-21:52:42 /IHVDAC DETECTOR=6, VOLTAGE=83 ;1593 V (was 1789 V)<br />
<br />
* On October 28 in an attempt to lower the high reset rates and the front slow counts registered the HV on the detector was changed to ~1397.<br />
<br />
2015-301-20:28:46 /ihvdac detector=6, voltage=73<br />
<br />
* November 11, front slow threshold lowered from 0x50 to 0x40. The noise appears<br />
relatively flat at those values, and we shouldn't experience too much additional<br />
noise counts.<br />
<br />
2015-318-07:03:56 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-318-07:04:07 /IDPLOAD VALUE=0x40 ; was 0x50<br />
<br />
* 2015 December 10 & 12, front slow threshold lowered in an attempt to recover energy spectrum before GRIPS.<br />
<br />
2015-344-19:58:19 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-344-19:58:28 /IDPLOAD VALUE=0x30 ; was 0x40<br />
<br />
2015-346-00:33:12 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-346-00:33:22 /IDPLOAD VALUE=0x20 ; was 0x30<br />
<br />
* 2016 January 8: The slow front threshold was increased from 0x30 to 0x80.<br />
<br />
2016-008-01:32:23 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2016-008-01:32:32 /IDPLOAD VALUE=0x80 ; was 0x30<br />
<br />
* 2016 January 13, 15: We dropped the D6 HV to 500 V, to reduce noise and see if any spectrum could be recovered. No luck there, so on 15 january, we dropped the HV to 200 V. D6 desegmented and began to fill the memory. We raised the HV back to 500 V, and turned events off.<br />
<br />
2016-013-23:02:09 /ihvdac detector=6, voltage=28 ; 500 V<br />
<br />
2016-015-01:41:44 /ihvdac detector=6, voltage=11<br />
2016-015-23:40:07 /ITMOFF VALUE=DIB6 ; off permanently<br />
2016-015-23:40:25 /IHVDAC DETECTOR=6, VOLTAGE=28 ; 500 V<br />
<br />
Post 2016 anneal<br />
<br />
* This detector was turned on on 26 January 2017<br />
<br />
* On 9-Feb-2017, the front fast threshold was raised from 0x70 to 0x80<br />
<br />
2017-039-20:11:12 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-039-20:11:21 /IDPULOAD VALUE=0x80 ; was 0x70<br />
<br />
* On 21-Feb-2017, front fast threshold was raised from 0x80 to 0x90<br />
<br />
17-052-17:21:46 start idib_chg_thrshld(6,FRONT,FAST,0x90) ; was 0x80<br />
17-052-17:22:22 start show_temps_avg<br />
17-052-17:22:40 CP1: 152.6 K<br />
17-052-17:22:40 CP2: 151.2 K<br />
17-052-17:22:40 CT1: 127.9 K<br />
17-052-17:22:40 CT2: 126.1 K<br />
17-052-17:22:40 TST: 189.0 K<br />
17-052-17:22:40 cp1 - ct1 = 24.61 K<br />
17-052-17:22:40 Cryo Power: 75.4 W<br />
17-052-17:22:40 Cryo Accel: 12.1 mG<br />
<br />
* On May 15 at 17:50 we lowered the HV from ~3400V to ~2000 V as an experiment to increase the Livetime. The experiment worked well.<br />
<br />
2017-135-17:50:10 /ihvdac detector=6, voltage=103 ; 2000 V<br />
<br />
* 16 August 2017, raised front slow threshold to reduce low energy noise<br />
17-228-19:57:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:57:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:57:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:57:48 /IDPULOAD VALUE=0x1C<br />
<br />
* On 27-sep-2017, the front fast rate threshold for detector 6 was lowered to 0x20, in an attempt to set the threshold to such a low value that individual fast rate counts would not be distinguished, thus reducing the fast rates and increasing live time. This was not successful, and the threshold was raised back to 0xFF.<br />
<br />
Here are the command times (UTC):<br />
<br />
2017-270-19:33:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:33:24 /IDPULOAD VALUE=0x80 ; was 0xFF<br />
<br />
2017-270-19:34:03 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:08 /IDPULOAD VALUE=0x40<br />
<br />
2017-270-19:34:45 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:50 /IDPULOAD VALUE=0x30<br />
<br />
2017-270-19:35:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:35:35 /IDPULOAD VALUE=0x20<br />
<br />
2017-270-19:36:21 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:36:29 /IDPULOAD VALUE=0x10<br />
<br />
2017-270-19:37:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:37:35 /IDPULOAD VALUE=0x00<br />
<br />
2017-270-19:38:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:38:18 /IDPULOAD VALUE=0xFF<br />
<br />
* 3 November 2017: Rear fast threshold raised to 0xFF<br />
<br />
17-307-16:32:54 start idib_chg_thrshld(6,rear,fast,0xFF) , was 0x60<br />
17-307-16:32:58 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-307-16:32:58 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
17-307-16:33:08 /IDPULOAD VALUE=0xFF<br />
<br />
<br />
===D6 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C (after segmentation)<br />
|-<br />
| 2015 Jan 26 21:57:13 UTC || 0x30 (was 0x0C)<br />
|- <br />
| 2015 Jan 27 21:37:03 UTC || 0x0C (was 0x30)<br />
|- <br />
| 2015 Apr 09 21:17:27 UTC || 0x15 (was 0x0C)<br />
|-<br />
| 2015 Apr 14 15:49:25 UTC || 0x1A (was 0x15)<br />
|-<br />
| 2015 Apr 14 15:50:30 UTC || 0x1F (was 0x1A)<br />
|-<br />
| 2015 Apr 14 15:52:06 UTC || 0x15 (was 0x1F)<br />
|-<br />
| 2015 May 21 19:25:36 UTC || 0x20 (was 0x15)<br />
|-<br />
| 2015 Aug 25 00:03:04 UTC || 0x25 (was 0x20)<br />
|-<br />
| 2015 Sep 15 00:17:09 UTC || 0x30 (was 0x25)<br />
|-<br />
| 2015 Oct 02 21:29:49 UTC || 0x40 (was 0x30)<br />
|-<br />
| 2015 Oct 05 00:40:54 UTC || 0x50 (was 0x40)<br />
|-<br />
| 2015-11-14 07:04:07 UTC || 0x40 (was 0x50)<br />
|-<br />
| 2015-12-10 19:58:19 UTC || 0x30 (was 0x40)<br />
|-<br />
| 2015-12-12 00:33:22 UTC || 0x20 (was 0x30)<br />
|-<br />
| 2016-01-08 01:32:32 UTC || 0x80 (was 0x30)<br />
|-<br />
| post 2016 anneal || 0x68<br />
|-<br />
| 2017-08-16 19:57:48 || 0x1C<br />
|}<br />
<br />
===D6 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22 (after segmentation)<br />
|- <br />
| 2015-Jan-30 00:20:17 || 0x30 (was 0x22)<br />
|-<br />
| 2015-Feb-27 21:41:44 || 0x40 (was 0x30)<br />
|-<br />
| 2015-Mar-09 01:27:07 || 0x50 (was 0x40)<br />
|-<br />
| 2015-Mar-13 22:04:22 || 0x60 (was 0x50)<br />
|- <br />
| 2015-Mar-17 20:44:14 || 0x70 (was 0x60)<br />
|- <br />
| 2015-Mar-20 22:52:58 || 0x60 (was 0x70)<br />
|- <br />
| 2015-Mar-20 22:55:19 || 0x50 (was 0x60)<br />
|- <br />
| 2015-Mar-20 22:56:01 || 0x70 (was 0x50)<br />
|- <br />
| 2015-Apr-07 19:57 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Apr-09 17:33 || 0xA0 (was 0x90)<br />
|- <br />
| 2015-Apr-14 14:12 || 0xA8 (was 0xA0)<br />
|- <br />
| 2015-Apr-14 15:45 || 0xB0 (was 0xA8)<br />
|- <br />
| 2015-Apr-14 15:46 || 0xB8 (was 0xB0)<br />
|- <br />
| 2015-Apr-14 15:48 || 0xB0 (was 0xB8)<br />
|- <br />
| 2015-Aug-24 20:45:10 || 0xD0 (was 0xB0)<br />
|- <br />
| 2015-Sep-21 19:47:33 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Oct-08 21:49:59 || 0xFF (was 0xE0)<br />
|- <br />
| post 2016 anneal || 0x40<br />
|-<br />
| 2017-Feb-08 20:11:21 || 0x80 (was 0x70)<br />
|-<br />
| 2017-Feb-21 17:22:22 || 0x90 (was 0x80)<br />
|-<br />
| 2017-Feb-28 20:49:32 || 0xB0 (was 0x90)<br />
|-<br />
| 2017-Mar-01 || 0xFF<br />
|}<br />
<br />
===D6 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30 (after segmentation)<br />
|-<br />
| post 2016 anneal || 0x30<br />
|}<br />
<br />
===D6 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45 (after segmentation)<br />
|-<br />
| 2015-Jan-08 17:45:18 || 0x50 (was 0x45)<br />
|-<br />
| 2015-Jan-08 17:45:18 || 0x50 (was 0x45)<br />
|- <br />
| 2015-Mar-17 22:05:17 || 0x60 (was 0x50)<br />
|- <br />
| 2015-May-26 19:13:07 || 0x68 (was 0x60)<br />
|- <br />
| 2015-Jul-07 18:49:19 || 0x70 (was 0x68)<br />
|- <br />
| 2015-Jul-13 16:34:52 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Jul-29 17:19:45 || 0xB0 (was 0xA0)<br />
|- <br />
| 2015-Aug-24 20:47:36 || 0xC0 (was 0xB0)<br />
|- <br />
| 2015-Aug-25 00:04:34 || 0xD0 (was 0xC0)<br />
|- <br />
| 2015-Aug-31 18:01:56 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Sep-09 17:53:18 || 0xF0 (was 0xE0)<br />
|- <br />
| 2015-Sep-14 17:35:49 || 0xFF (was 0xF0)<br />
|- <br />
| post 2016 anneal || 0x45<br />
|- <br />
| 2017-Jan-27 || 0x60<br />
|-<br />
| 2017-Nov-03 16:32:54 || 0xFF (was 0x60)<br />
|}<br />
<br />
===D6 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 4510 V (unsegmented)<br />
|- <br />
| 2014-Aug-14 03:40 UTC || 4926 V (was 4510 V) (segmented)<br />
|- <br />
| 2015-Mar-20 21:12 UTC || 4500 V (was 4926 V)<br />
|- <br />
| 2015-Mar-20 22:50 UTC || 4142 V (was 4500 V)<br />
|- <br />
| 2015-Mar-25 22:47 UTC || 3750 V (was 4142 V)<br />
|-<br />
| 2015-May-26 19:11 UTC || 1985 V (was 2573 V)<br />
|-<br />
| 2015-Aug-28 17:32 UTC || 1789 V (was 1985 V)<br />
|-<br />
| 2015-Oct-12 21:52:42 UTC || 1593 V (was 1789 V)<br />
|-<br />
| 2015-Oct-28 20:28:46 UTC || 1397 V (was 1593 V)<br />
|-<br />
| 2016-Jan-13 23:02:09 UTC || 500 V (was 1000 V)<br />
|-<br />
| 2016-Jan-15 01:41:44 UTC || 200 V (was 500 V)<br />
|-<br />
| 2016-Jan-15 23:40:25 UTC || 500 V (was 200 V)<br />
|-<br />
| post 2016 anneal || 0V<br />
|-<br />
| 2016-Mar-01 12:37:00 UTC || 3480 V<br />
|-<br />
| 2017-May-15 17:50:10 UTC || 2000 V (was 3400 V)<br />
|-<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_1Detector 12017-11-08T18:38:55Z<p>Jmctiernan: </p>
<hr />
<div>This page contains information about changes/issues for RHESSI detector 1 after the 2014 anneal. Detector 1 updates from 2012-mid 2014 can be found here: [[Detector 1 anneal 2012]]<br />
<br />
=== Post 2014 Anneal ===<br />
<br />
Detector 1 is SEGMENTED following the 2014 anneal (yay!)<br />
<br />
* The rear fast threshold was changed on July 13 2015 due to dropping livetime in the rear:<br />
2015-194-16:33:58 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-194-16:34:12 /IDPLOAD VALUE=0x50 ; was 0x45<br />
<br />
* The rear fast threshold was changed on July 24 2015 due to low livetime. However, the change probably wasn't needed; the tohban hadn't noticed that a change had already been made a few days ago. The next tohban can reverse the change if desired.<br />
2015-205-17:18:59 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-205-17:19:08 /IDPLOAD VALUE=0x70 ; was 0x60<br />
<br />
* The rear fast threshold was changed on Sep 9 2015 due to low livetime.<br />
2015-252-17:51:10 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-252-17:51:17 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* On October 8, 9, and 12, the rear fast threshold was raised three times to try and raise livetime. Results still need to be assessed.<br />
<br />
2015-281-21:50:13 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-281-21:50:24 /IDPLOAD VALUE=0xA0 ; was 0x90<br />
<br />
2015-282-19:55:48 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-282-19:55:58 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
2015-285-21:51:28 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-285-21:51:37 /IDPLOAD VALUE=0xC0 ; was 0xB0<br />
<br />
* Also on October 12, the front fast threshold on D1 (and also D7) was raised. This is to try and top off the livetime used in the attenuator logic. It might not work, since the fast rates are not terribly high for this detector, in which case the change could be reversed by a future tohban. Check this and see..<br />
<br />
2015-285-20:16:55 /IDPUTABLE1 OFFSET=FRONTFASTDAC<br />
2015-285-20:17:03 /IDPLOAD VALUE=0x50 ; was 0x40<br />
<br />
* On November 6, 7, 8. the rear fast threshold was raised three times to try and raise livetime. At 0xFF the live time is at 70%<br />
<br />
2015-312-06:16:29 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-312-06:16:52 /IDPLOAD VALUE=0xE0 ; was 0xD0<br />
<br />
2015-313-19:22:53 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-313-19:23:03 /IDPLOAD VALUE=0xF0 ; was 0xE0<br />
<br />
2015-314-18:55:49 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-314-18:56:05 /IDPLOAD VALUE=0xFF ; was 0xFF<br />
<br />
* 2015 December 14 lowered HV by 200 V in an attempt to reduce D1 rear, fast rates<br />
<br />
2015-348-18:19:00 /IHVDAC DETECTOR=1, VOLTAGE=176 ; 34-6.8 V<br />
<br />
* 2015 December 28 lowered HV by 200 V in an attempt to reduce D1 dead time<br />
<br />
2015-362-09:13:58 /ihvdac detector=1, voltage=166 ; Lowered G1 HV by 200V<br />
<br />
* 2016 January 13 lowered HV to 2500 V<br />
<br />
2016-013-21:20:47 /IHVDAC DETECTOR=1, VOLTAGE=129 ; 2500 V<br />
<br />
* 2016 January 27 lowered HV to 1500 V<br />
<br />
2016-027-20:16:13 /IHVDAC DETECTOR=1, VOLTAGE=77 ; 1500V from 2000V<br />
<br />
=== Post 2016 Anneal ===<br />
<br />
* March 18, 2016 - Turned off D1<br />
2016-139-18:53:32 /ihvdac detector=1, voltage=0<br />
2016-139-18:56:49 /idibpwroff value=1<br />
<br />
* 2016 April 27 (DOY 118): Started turning on D1. HV reached 3995 V by April 29, ~03:40<br />
<br />
16-119-00:49:49 start ihv_ramp_stage1_g1_g4_g7 (HV = 0x0A, ~200 V)<br />
16-119-02:27:48 start ihv_ramp_stage2_g1_g4_g7 (HV = 0x33, 980 V)<br />
16-119-04:08:00 start ihv_ramp_stage3_g1_g4_g7 (HV = 0x67, 1985 V)<br />
16-120-00:22:16 start ihv_ramp_stage4_g1_g4_g7 (HV = 0x9A, ~3000 V)<br />
16-120-02:01:36 start ihv_ramp_stage5_g1_g4_g7 (HV = 0xB3, ~3500 V)<br />
16-120-03:41:12 start ihv_ramp_stage6_g1_g4_g7 (HV = 0xCE, 3995 V)<br />
<br />
* 2016 June 27-28: Turned on D1 again. The final HV is 4000 V. The front and rear counts looked good. D1's front live time was around 98.6 % and the rear<br />
live time was about 97.8 % The last commanding was at DOY180-20:54 UTC. <br />
<br />
* 2016 July 4: D1 turned off to reduce temperature load.<br />
<br />
<br />
* 2017 January 26: D1 turned off.<br />
<br />
2017-026-16:00:18 /ihvdac detector=1, voltage=0 ; detector 1 off<br />
<br />
* 2017 April 3: Turned on in response to high solar activity. HV was raised to ~1000V at 16:25 and then up to ~2000V at 19:45 UT.<br />
<br />
* 2017 April 17: Events turned on in response to high solar activity. Adjustment of Front Fast and Rear Fast thresholds.<br />
<br />
2017-107-21:32:05 start ihv_ramp_stage2_g1 ; 1000 V<br />
17-107-23:09:42 start ihv_ramp_stage3_g1<br />
17-108-00:43:46 start idib_chg_thrshld(1, FRONT, FAST, 0x80)<br />
17-108-00:45:22 start idib_chg_thrshld(1, REAR, FAST, 0x60)<br />
<br />
* 2017 April 25: Front fast threshold increase, raised live time form 2% to 61%<br />
<br />
2017-115-22:28:46 /IDPUTABLE1 OFFSET=FRONTFASTDAC<br />
2017-115-22:28:56 /IDPULOAD VALUE=0x90 ; was 0x80<br />
<br />
* 2017 August 16: Front slow threshold increase, to cut low energy noise<br />
<br />
17-228-19:58:55 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:58:58 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:58 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:59:07 /IDPULOAD VALUE=0x15<br />
<br />
* 2017 November 3: Rear fast threshold increase to 0xFF<br />
<br />
<br />
17-307-16:33:21 start idib_chg_thrshld(1,rear,fast,0xFF) ; was 0x90<br />
17-307-16:33:25 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-307-16:33:25 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
17-307-16:33:36 /IDPULOAD VALUE=0xFF<br />
<br />
<br />
<br />
===D1 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C<br />
|-<br />
| post 2016 anneal || 0x0c<br />
|-<br />
| 2017-Aug-16 || 0x15<br />
|}<br />
<br />
===D1 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22<br />
|-<br />
| 2015-May-12 21:01:12 || 0x30 (was 0x22)<br />
|-<br />
| 2015-May-12 21:10:35 || 0x40 (was 0x30)<br />
|- <br />
| 2015-Oct-12 20:17:03 || 0x50 (was 0x40)<br />
|- <br />
| post 2016 anneal || 0x22<br />
|-<br />
| 2017-Apr-18 00:43:46 || 0x80 <br />
|-<br />
| 2017-Apr-25 22:28:56 || 0x90 (was 0x80)<br />
|-<br />
| 2017-May-09 19:06:57 || 0xE0 (was 0xA0)<br />
|}<br />
<br />
===D1 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30<br />
|-<br />
| post 2016 anneal || 0x30<br />
|}<br />
<br />
===D1 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45<br />
|-<br />
| 2015-Jul-13 16:34:12 || 0x50 (was 0x45)<br />
|- <br />
| 2015-Jul-24 17:19:08 || 0x70 (was 0x60)<br />
|- <br />
| 2015-Sep-9 17:51:17 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Sep-17 06:36:06 || 0x90 (was 0x80)<br />
|- <br />
| 2015-Oct-08 21:50:24 || 0xA0 (was 0x90)<br />
|- <br />
| 2015-Nov-06 06:16:52 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Nov-07 19:23:03 || 0xF0 (was 0xE0)<br />
|- <br />
| 2015-Nov-08 18:56:05 || 0xFF (was 0xF0)<br />
|- <br />
| ?? || 0x50<br />
|-<br />
| 2017-Apr-18 00:45:22 || 0x60 (was 0x50)<br />
|-<br />
| 2017-May-09 20:43:44 || 0x90 (was 0x60)<br />
|-<br />
| 2017-Nov-03 16:33:21 !! 0xFF (was 0x90) <br />
|}<br />
<br />
===D1 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 3995 V<br />
|- <br />
| 2015-Dec-14 18:19:00 UTC || 3407V<br />
|- <br />
| 2015-Dec-28 09:13:00 UTC || 3210V<br />
|-<br />
| 2016-Jan-13 21:20:47 UTC || 2500V<br />
|-<br />
| 2016-Jan-27 20:16:13 UTC || 1500V<br />
|-<br />
| post 2016 anneal || 3995 V<br />
|-<br />
| 2016-Jul-04 || 0V<br />
|-<br />
| 2017-Jan-26 || 0V<br />
|-<br />
| 2017-Apr-3 || 2000 V<br />
|-<br />
| 2017-Apr-11 || 0 V<br />
|-<br />
| 2017-Apr-18 || 2000 V<br />
|-<br />
| 2017-Jul-05 || 1500 V<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_1Detector 12017-11-08T18:37:03Z<p>Jmctiernan: </p>
<hr />
<div>This page contains information about changes/issues for RHESSI detector 1 after the 2014 anneal. Detector 1 updates from 2012-mid 2014 can be found here: [[Detector 1 anneal 2012]]<br />
<br />
=== Post 2014 Anneal ===<br />
<br />
Detector 1 is SEGMENTED following the 2014 anneal (yay!)<br />
<br />
* The rear fast threshold was changed on July 13 2015 due to dropping livetime in the rear:<br />
2015-194-16:33:58 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-194-16:34:12 /IDPLOAD VALUE=0x50 ; was 0x45<br />
<br />
* The rear fast threshold was changed on July 24 2015 due to low livetime. However, the change probably wasn't needed; the tohban hadn't noticed that a change had already been made a few days ago. The next tohban can reverse the change if desired.<br />
2015-205-17:18:59 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-205-17:19:08 /IDPLOAD VALUE=0x70 ; was 0x60<br />
<br />
* The rear fast threshold was changed on Sep 9 2015 due to low livetime.<br />
2015-252-17:51:10 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-252-17:51:17 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* On October 8, 9, and 12, the rear fast threshold was raised three times to try and raise livetime. Results still need to be assessed.<br />
<br />
2015-281-21:50:13 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-281-21:50:24 /IDPLOAD VALUE=0xA0 ; was 0x90<br />
<br />
2015-282-19:55:48 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-282-19:55:58 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
2015-285-21:51:28 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-285-21:51:37 /IDPLOAD VALUE=0xC0 ; was 0xB0<br />
<br />
* Also on October 12, the front fast threshold on D1 (and also D7) was raised. This is to try and top off the livetime used in the attenuator logic. It might not work, since the fast rates are not terribly high for this detector, in which case the change could be reversed by a future tohban. Check this and see..<br />
<br />
2015-285-20:16:55 /IDPUTABLE1 OFFSET=FRONTFASTDAC<br />
2015-285-20:17:03 /IDPLOAD VALUE=0x50 ; was 0x40<br />
<br />
* On November 6, 7, 8. the rear fast threshold was raised three times to try and raise livetime. At 0xFF the live time is at 70%<br />
<br />
2015-312-06:16:29 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-312-06:16:52 /IDPLOAD VALUE=0xE0 ; was 0xD0<br />
<br />
2015-313-19:22:53 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-313-19:23:03 /IDPLOAD VALUE=0xF0 ; was 0xE0<br />
<br />
2015-314-18:55:49 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-314-18:56:05 /IDPLOAD VALUE=0xFF ; was 0xFF<br />
<br />
* 2015 December 14 lowered HV by 200 V in an attempt to reduce D1 rear, fast rates<br />
<br />
2015-348-18:19:00 /IHVDAC DETECTOR=1, VOLTAGE=176 ; 34-6.8 V<br />
<br />
* 2015 December 28 lowered HV by 200 V in an attempt to reduce D1 dead time<br />
<br />
2015-362-09:13:58 /ihvdac detector=1, voltage=166 ; Lowered G1 HV by 200V<br />
<br />
* 2016 January 13 lowered HV to 2500 V<br />
<br />
2016-013-21:20:47 /IHVDAC DETECTOR=1, VOLTAGE=129 ; 2500 V<br />
<br />
* 2016 January 27 lowered HV to 1500 V<br />
<br />
2016-027-20:16:13 /IHVDAC DETECTOR=1, VOLTAGE=77 ; 1500V from 2000V<br />
<br />
=== Post 2016 Anneal ===<br />
<br />
* March 18, 2016 - Turned off D1<br />
2016-139-18:53:32 /ihvdac detector=1, voltage=0<br />
2016-139-18:56:49 /idibpwroff value=1<br />
<br />
* 2016 April 27 (DOY 118): Started turning on D1. HV reached 3995 V by April 29, ~03:40<br />
<br />
16-119-00:49:49 start ihv_ramp_stage1_g1_g4_g7 (HV = 0x0A, ~200 V)<br />
16-119-02:27:48 start ihv_ramp_stage2_g1_g4_g7 (HV = 0x33, 980 V)<br />
16-119-04:08:00 start ihv_ramp_stage3_g1_g4_g7 (HV = 0x67, 1985 V)<br />
16-120-00:22:16 start ihv_ramp_stage4_g1_g4_g7 (HV = 0x9A, ~3000 V)<br />
16-120-02:01:36 start ihv_ramp_stage5_g1_g4_g7 (HV = 0xB3, ~3500 V)<br />
16-120-03:41:12 start ihv_ramp_stage6_g1_g4_g7 (HV = 0xCE, 3995 V)<br />
<br />
* 2016 June 27-28: Turned on D1 again. The final HV is 4000 V. The front and rear counts looked good. D1's front live time was around 98.6 % and the rear<br />
live time was about 97.8 % The last commanding was at DOY180-20:54 UTC. <br />
<br />
* 2016 July 4: D1 turned off to reduce temperature load.<br />
<br />
<br />
* 2017 January 26: D1 turned off.<br />
<br />
2017-026-16:00:18 /ihvdac detector=1, voltage=0 ; detector 1 off<br />
<br />
* 2017 April 3: Turned on in response to high solar activity. HV was raised to ~1000V at 16:25 and then up to ~2000V at 19:45 UT.<br />
<br />
* 2017 April 17: Events turned on in response to high solar activity. Adjustment of Front Fast and Rear Fast thresholds.<br />
<br />
2017-107-21:32:05 start ihv_ramp_stage2_g1 ; 1000 V<br />
17-107-23:09:42 start ihv_ramp_stage3_g1<br />
17-108-00:43:46 start idib_chg_thrshld(1, FRONT, FAST, 0x80)<br />
17-108-00:45:22 start idib_chg_thrshld(1, REAR, FAST, 0x60)<br />
<br />
* 2017 April 25: Front fast threshold increase, raised live time form 2% to 61%<br />
<br />
2017-115-22:28:46 /IDPUTABLE1 OFFSET=FRONTFASTDAC<br />
2017-115-22:28:56 /IDPULOAD VALUE=0x90 ; was 0x80<br />
<br />
* 2017 August 16: Front slow threshold increase, to cut low energy noise<br />
<br />
17-228-19:58:55 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:58:58 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:58 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:59:07 /IDPULOAD VALUE=0x15<br />
<br />
* 2017 November 3: Rear fast threshold increase to 0xFF<br />
<br />
<br />
17-307-16:33:21 start idib_chg_thrshld(1,rear,fast,0xFF) ; was 0x90<br />
17-307-16:33:25 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-307-16:33:25 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
17-307-16:33:36 /IDPULOAD VALUE=0xFF<br />
<br />
<br />
<br />
===D1 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C<br />
|-<br />
| post 2016 anneal || 0x0c<br />
|-<br />
| 2017-Aug-16 || 0x15<br />
|}<br />
<br />
===D1 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22<br />
|-<br />
| 2015-May-12 21:01:12 || 0x30 (was 0x22)<br />
|-<br />
| 2015-May-12 21:10:35 || 0x40 (was 0x30)<br />
|- <br />
| 2015-Oct-12 20:17:03 || 0x50 (was 0x40)<br />
|- <br />
| post 2016 anneal || 0x22<br />
|-<br />
| 2017-Apr-18 00:43:46 || 0x80 <br />
|-<br />
| 2017-Apr-25 22:28:56 || 0x90 (was 0x80)<br />
|-<br />
| 2017-May-09 19:06:57 || 0xE0 (was 0xA0)<br />
|}<br />
<br />
===D1 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30<br />
|-<br />
| post 2016 anneal || 0x30<br />
|}<br />
<br />
===D1 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45<br />
|-<br />
| 2015-Jul-13 16:34:12 || 0x50 (was 0x45)<br />
|- <br />
| 2015-Jul-24 17:19:08 || 0x70 (was 0x60)<br />
|- <br />
| 2015-Sep-9 17:51:17 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Sep-17 06:36:06 || 0x90 (was 0x80)<br />
|- <br />
| 2015-Oct-08 21:50:24 || 0xA0 (was 0x90)<br />
|- <br />
| 2015-Nov-06 06:16:52 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Nov-07 19:23:03 || 0xF0 (was 0xE0)<br />
|- <br />
| 2015-Nov-08 18:56:05 || 0xFF (was 0xF0)<br />
|- <br />
| ?? || 0x50<br />
|-<br />
| 2017-Apr-18 00:45:22 || 0x60 (was 0x50)<br />
|-<br />
| 2017-May-09 20:43:44 || 0x90 (was 0x60)<br />
!-<br />
! 2017-Nov-03 16:33:21 !! 0xFF (was 0x90) <br />
|}<br />
<br />
===D1 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 3995 V<br />
|- <br />
| 2015-Dec-14 18:19:00 UTC || 3407V<br />
|- <br />
| 2015-Dec-28 09:13:00 UTC || 3210V<br />
|-<br />
| 2016-Jan-13 21:20:47 UTC || 2500V<br />
|-<br />
| 2016-Jan-27 20:16:13 UTC || 1500V<br />
|-<br />
| post 2016 anneal || 3995 V<br />
|-<br />
| 2016-Jul-04 || 0V<br />
|-<br />
| 2017-Jan-26 || 0V<br />
|-<br />
| 2017-Apr-3 || 2000 V<br />
|-<br />
| 2017-Apr-11 || 0 V<br />
|-<br />
| 2017-Apr-18 || 2000 V<br />
|-<br />
| 2017-Jul-05 || 1500 V<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-11-08Tohban Report 2017-11-082017-11-08T18:32:56Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 1 November 2017 |end_date = 8 November 2017 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == S..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 1 November 2017<br />
|end_date = 8 November 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
QUIET!<br />
<br />
% HSI_TOHBAN_FLARE_COUNTER: No RHESSI Flare list for this time period<br />
% HSI_TOHBAN_FLARE_COUNTER: No RHESSI Flares for this time period<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level ranging from 50 to 70%, due to minimal BGS contact. More BGS passes are in the queue.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 131.5 and 129.7 K as of 6-nov-2017. The cold plates, 1 and 2 are 158.7 and 157.3 K. <br />
Cryocooler power is steady at 74.0W, cryocooler efficiencies are 0.0273 and 0.0277. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 1-nov-2017 TO 8-nov-2017<br />
TIME RANGE: 2017-11-01T00:00:00.000 -- 2017-11-08T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-04T08:40:00.000 -- 2017-11-04T08:50:00.000 600.00000<br />
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-11-05T20:45:00.000 -- 2017-11-08T00:00:00.000 184500.00<br />
<br />
Note that the VC3 "gap" is due to packets that have not yet been transmitted.<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. Fast thresholds for detectors 1, 6, and 8 were raised to 0xFF on November 3:<br />
<br />
<br />
17-307-16:30:20 start sc_ats_load(T17310SLTN34.00)<br />
17-307-16:32:10 start idpu_clear halted<br />
<br />
17-307-16:32:21 start idib_chg_thrshld(8,rear,fast,0xFF) ; was 0xC0<br />
17-307-16:32:25 /IDPUDUMPTABL TABLE=DIBTBL8<br />
17-307-16:32:25 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
17-307-16:32:37 /IDPULOAD VALUE=0xFF<br />
<br />
17-307-16:32:54 start idib_chg_thrshld(6,rear,fast,0xFF) , was 0x60<br />
17-307-16:32:58 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-307-16:32:58 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
17-307-16:33:08 /IDPULOAD VALUE=0xFF<br />
<br />
17-307-16:33:21 start idib_chg_thrshld(1,rear,fast,0xFF) ; was 0x90<br />
17-307-16:33:25 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-307-16:33:25 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
17-307-16:33:36 /IDPULOAD VALUE=0xFF<br />
<br />
17-307-16:33:56 start show_temps_avg<br />
17-307-16:34:14 CP1: 158.1 K<br />
17-307-16:34:14 CP2: 156.7 K<br />
17-307-16:34:14 CT1: 132.5 K<br />
17-307-16:34:14 CT2: 130.7 K<br />
17-307-16:34:14 TST: 192.0 K<br />
17-307-16:34:14 cp1 - ct1 = 25.82 K<br />
17-307-16:34:14 Cryo Power: 74.7 W<br />
17-307-16:34:14 Cryo Accel: 11.9 mG<br />
<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 23.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-10-25Tohban Report 2017-10-252017-10-25T18:12:57Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 18 October 2017<br />
|end_date = 25 October 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Minimal activity last week, dead quiet now.<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 5 0 1 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 2 0 1 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
There were RHESSI flares/GOES flares 5 / 6<br />
over the time range 17-Oct-17 24-Oct-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level rising to 54%, due to minimal BGS contact.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.8 and 131.0 K as of 2-oct-2017. The cold plates, 1 and 2 are 158.5 and 157.1 K. <br />
Cryocooler power is steady at 74.0W, cryocooler efficiencies are 0.0269 and 0.0273. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 19-oct-2017 TO 26-oct-2017<br />
TIME RANGE: 2017-10-19T00:00:00.000 -- 2017-10-26T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-20T11:45:00.000 -- 2017-10-20T13:25:00.000 6000.0000<br />
2017-10-25T16:05:00.000 -- 2017-10-26T00:00:00.000 28500.000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 4<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-19T11:35:00.000 -- 2017-10-19T12:10:00.000 2100.0000<br />
2017-10-19T12:15:00.000 -- 2017-10-19T15:15:00.000 10800.000<br />
2017-10-20T11:45:00.000 -- 2017-10-20T13:25:00.000 6000.0000<br />
2017-10-25T16:05:00.000 -- 2017-10-26T00:00:00.000 28500.000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-19T17:20:00.000 -- 2017-10-19T17:25:00.000 300.00000<br />
2017-10-23T01:15:00.000 -- 2017-10-26T00:00:00.000 254700.00<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No HV or threshold changes. Detector 6 front live time has large fluctuations due to increased fast rates when the average cold plate temperature is in the 158 K range.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 23.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-10-25Tohban Report 2017-10-252017-10-25T17:52:52Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 18 October 2017 |end_date = 25 October 2017 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == S..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 18 October 2017<br />
|end_date = 25 October 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Some activity last week, dead quiet now.<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 5 0 1 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 2 0 1 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 1 0 0 0<br />
<br />
There were RHESSI flares/GOES flares 5 / 6<br />
over the time range 17-Oct-17 24-Oct-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level rising to 54%, due to minimal BGS contact.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 132.8 and 131.0 K as of 2-oct-2017. The cold plates, 1 and 2 are 158.5 and 157.1 K. <br />
Cryocooler power is steady at 74.0W, cryocooler efficiencies are 0.0269 and 0.0273. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 19-oct-2017 TO 26-oct-2017<br />
TIME RANGE: 2017-10-19T00:00:00.000 -- 2017-10-26T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-20T11:45:00.000 -- 2017-10-20T13:25:00.000 6000.0000<br />
2017-10-25T16:05:00.000 -- 2017-10-26T00:00:00.000 28500.000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 4<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-19T11:35:00.000 -- 2017-10-19T12:10:00.000 2100.0000<br />
2017-10-19T12:15:00.000 -- 2017-10-19T15:15:00.000 10800.000<br />
2017-10-20T11:45:00.000 -- 2017-10-20T13:25:00.000 6000.0000<br />
2017-10-25T16:05:00.000 -- 2017-10-26T00:00:00.000 28500.000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-19T17:20:00.000 -- 2017-10-19T17:25:00.000 300.00000<br />
2017-10-23T01:15:00.000 -- 2017-10-26T00:00:00.000 254700.00<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No HV or threshold changes. Detector 6 front live time has large fluctuations due to increased fast rates when the average cold plate temperature is in the 158 K range.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 23.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-10-04Tohban Report 2017-10-042017-10-04T18:01:01Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 27 September 2017<br />
|end_date = 4 October 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet, 2 C flares<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 11 2 0 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 3 2 0 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 3 2 0 0<br />
<br />
There were RHESSI flares/GOES flares 6 / 13<br />
over the time range 26-Sep-17 03-Oct-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR levels between 5% and 30% for the last three days.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 131.8 and 130.0 K as of 2-oct-2017. The cold plates, 1 and 2 are 157.6 and 156.2 K. <br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0268 and 0.0272. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 27-sep-2017 TO 4-oct-2017<br />
TIME RANGE: 2017-09-27T00:00:00.000 -- 2017-10-04T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-01T18:15:00.000 -- 2017-10-01T18:20:00.000 300.00000<br />
2017-10-02T17:10:00.000 -- 2017-10-02T17:20:00.000 600.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-02T17:10:00.000 -- 2017-10-02T17:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-03T00:25:00.000 -- 2017-10-03T00:30:00.000 300.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No HV changes. On 27-sep-2017, the front fast rate threshold for detector 6 was lowered to 0x20, in an attempt to set the threshold to such a low value that individual fast rate counts would not be distinguished, thus reducing the fast rates and increasing live time. This was not successful, and the threshold was raised back to 0xFF.<br />
<br />
Here are the command times (UTC):<br />
<br />
2017-270-19:33:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:33:24 /IDPULOAD VALUE=0x80 ; was 0xFF<br />
<br />
2017-270-19:34:03 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:08 /IDPULOAD VALUE=0x40<br />
<br />
2017-270-19:34:45 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:50 /IDPULOAD VALUE=0x30<br />
<br />
2017-270-19:35:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:35:35 /IDPULOAD VALUE=0x20<br />
<br />
2017-270-19:36:21 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:36:29 /IDPULOAD VALUE=0x10<br />
<br />
2017-270-19:37:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:37:35 /IDPULOAD VALUE=0x00<br />
<br />
2017-270-19:38:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:38:18 /IDPULOAD VALUE=0xFF<br />
<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 18.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_6Detector 62017-10-04T17:43:01Z<p>Jmctiernan: </p>
<hr />
<div>This page contains information about changes/issues for RHESSI detector 6 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: [[Detector 6 anneal 2012]]<br />
<br />
===Notes===<br />
<br />
After the 2014 anneal, detector 6 began its reincarnated life as an unsegmented detector but segmented shortly after (see below).<br />
<br />
<br />
* On 2014 August 14, the HV on D6 was raised to 4926V in an attempt to segment it. This was successful, and D6 now operates as a segmented detector. Since its segmentation is borderline as of Aug/Sept 2014, it commonly unsegments during and just after the SAA.<br />
<br />
* On 2014 Jan 8, the rear fast threshold was raised since fast counts were eating up a lot of livetime.<br />
<br />
15-008-17:44:55 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
15-008-17:45:18 /IDPULOAD VALUE=0x50 ;(was 0x45)<br />
<br />
* * D6 has been showing some strange peaks in the spectrum; these are best seen as multiple lines (that drift) in spectrograms. On Monday, Jan 28 we raised the slow front threshold on D6 to ~10 keV and kept it there for a day before returning to the nominal ~3 keV. This is intended to see if the slow threshold affects the abnormal spectral lines.<br />
15-026-21:57:13 / D6 front slow threshold to 0x30 (was 0x0C).<br />
15-027-21:37:03 / D6 front slow threshold to 0x0C (was 0x30).<br />
<br />
<br />
* D6 fast rates are a bit high (have been rising slowly over the past week). It would be a good idea to raise the front fast threshold a touch. I didn't want to do this at the same time as the slow threshold experiment! <br />
<br />
*D6 front fast threshold was adjusted from default (0x22) due to increased rates, based on the above suggestion. Rates dropped from 3300 to 1250 when the change was made.<br />
15-030-00:19:54 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-030-00:20:17 /IDPLOAD VALUE=0x30 ; was 0x22<br />
<br />
* On 2015 February 27 Front Fast threshold was raised <br />
15-058-21:41:11 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-058-21:41:44 /IDPLOAD VALUE=0x40 (was 0x30)<br />
<br />
*Another raise to D6 front fast threshold on 2015 March 9:<br />
15-068-01:26:56 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-068-01:27:07 /IDPLOAD VALUE=0x50<br />
<br />
*On 2015 March 13 another raise was made to D6 front fast threshold and a raise of the rear fast threshold was made:<br />
15-072-22:04:01 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-072-22:04:22 /IDPLOAD VALUE=0x60<br />
<br />
15-072-22:05:07 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
15-072-22:05:17 /IDPLOAD VALUE=0x60<br />
<br />
*Again 2015 March 17 D6 front fast threshold was increased:<br />
15-076-20:44:01 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-076-20:44:14 /IDPLOAD VALUE=0x70<br />
<br />
On 2015 March 20 D6 HV was dropped in two 10 step increments, twice. Also we attempted to lower the front fast threshold to 0x50, but changed this almost immediately when the live time dropped to 3%:<br />
15-079-21:10:49 /IHVDAC DETECTOR=6, VOLTAGE=243<br />
15-079-21:12:47 /IHVDAC DETECTOR=6, VOLTAGE=233<br />
<br />
15-079-22:49:23 /ihvdac detector=6, voltage=223<br />
15-079-22:50:44 /ihvdac detector=6, voltage=213<br />
<br />
15-079-22:52:39 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:52:58 /IDPLOAD VALUE=0x60<br />
<br />
15-079-22:55:07 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:55:19 /IDPLOAD VALUE=0x50<br />
<br />
15-079-22:55:53 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:56:01 /IDPLOAD VALUE=0x70<br />
<br />
On 2015 March 25 D6 HV was dropped in 20 steps. <br />
15-084-22:45:15 /ihvdac detector=6, voltage=203<br />
15-084-22:46:45 /ihvdac detector=6, voltage=193 (3750 V)<br />
<br />
* April 7 2015: the front fast threshold was raised due to high fast rates that were significantly reducing livetime. This helped, but not a lot, so the action will probably be repeated soon.<br />
15-097-19:56:35 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-097-19:56:45 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* April 9 2015: The front fast and the front slow threshold were raised up to recover the livetime and trying to reduce the noise on the slow valid counts.<br />
<br />
15-099-17:32:59 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-099-17:33:11 /IDPLOAD VALUE=0xA0<br />
<br />
15-099-21:17:16 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-099-21:17:27 /IDPLOAD VALUE=0x15<br />
<br />
* On April 14 starting at 14:06 UT we made the next changes for detectors 6 trying to decrease valid counts on the Slow Front segment.<br />
<br />
15-104-14:11:57 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-104-14:12:05 /IDPLOAD VALUE=0xA8<br />
15-104-15:45:14 /IDPLOAD VALUE=0xB0<br />
15-104-15:46:24 /IDPLOAD VALUE=0xB8<br />
15-104-15:47:36 /IDPLOAD VALUE=0xB0<br />
<br />
15-104-15:49:18 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-104-15:49:25 /IDPLOAD VALUE=0x1A<br />
15-104-15:50:30 /IDPLOAD VALUE=0x1F<br />
15-104-15:52:06 /IDPLOAD VALUE=0x15<br />
<br />
* On May 21 starting at 19:23 UTC we made the next changes on Front Slow threshold:<br />
<br />
15-141-19:25:36 start idib_chg_thrshld (6, FRONT, SLOW, 0x20) --> Was 0x15<br />
15-141-19:25:46 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-141-19:25:47 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-141-19:25:55 /IDPLOAD VALUE=0x20<br />
<br />
* On May 26 we lowered the HV on detector 6 by 30 counts to a value of 1984 V. This change gave detector 6 the lowest voltage of all the detectors. G6 remained segmented through the pass.<br />
<br />
2015-146-19:11:11 /IHVDAC DETECTOR=6, VOLTAGE=103 (1985 V)<br />
<br />
We also increased the rear fast threshold on detector 6 by 0x08<br />
<br />
2015-146-19:13:07 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-146-19:13:25 /IDPLOAD VALUE=0x68 ; was 0x60<br />
<br />
* On 2015 July 7, D6 rear fast threshold was raised due to decreased livetime<br />
<br />
2015-188-18:49:02 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-188-18:49:19 /IDPLOAD VALUE=0x70 ; was 0x68<br />
<br />
* The rear fast threshold was changed on July 13 2015 due to dropping livetime in the rear:<br />
2015-194-16:34:40 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-194-16:34:52 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* The rear fast threshold was changed on July 24 2015 due to low livetime. However, the change probably wasn't needed; the tohban hadn't noticed that a change had already been made a few days ago. The next tohban can reverse the change if desired.<br />
2015-205-17:19:29 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-205-17:19:45 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
* Aug. 24, 2015: Detector 6: Both front and rear fast thresholds were raised again. This successfully brought the livetime up to 75% in the front, but didn't really change anything in the rear. Another attempt was made with the rear fast threshold, but again no change. The slow threshold was also raised, which brought the slow rates down from 200k to 5k.<br />
<br />
2015-236-20:44:59 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2015-236-20:45:10 /IDPLOAD VALUE=0xD0 ; was 0xB0<br />
<br />
2015-237-00:02:53 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-237-00:03:04 /IDPLOAD VALUE=0x25 ; was 0x20<br />
<br />
2015-236-20:47:27 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-236-20:47:36 /IDPLOAD VALUE=0xC0 ; was 0xB0<br />
<br />
2015-237-00:04:26 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-237-00:04:34 /IDPLOAD VALUE=0xD0 ; was 0xC0<br />
<br />
* Detector 6 was showing elevated slow front rates. We made a HV change on August 28, lowering the voltage by 200V. The change made the slow front rates to decrease, but still the detector shows elevated slow front counts. On August 31, the rear fast threshold was raised to increase the detector livetime.<br />
<br />
2015-240-17:32:26 /ihvdac detector=6, voltage=93 (from 1984 to 1789 V)<br />
<br />
2015-243-18:01:47 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-243-18:01:56 /IDPLOAD VALUE=0xE0 ; was 0xD0 <br />
<br />
* The rear fast threshold was changed on Sep 9 2015 due to low livetime.<br />
<br />
2015-252-17:53:05 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-252-17:53:18 /IDPLOAD VALUE=0xF0 ; was 0xF0<br />
<br />
* On September 14 2015 we raised the rear fast threshold on D6 from 0xF0 to 0xFF and on September 15 we raised the RHESSI D6 front slow threshold from 0x25 to 0x30.<br />
<br />
2015-257-17:35:39 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-257-17:35:49 /IDPLOAD VALUE=0xFF ; was 0xF0<br />
<br />
2015-258-17:09:29 /IDPUTABLE6 OFFSET=frontslowDAC<br />
2015-258-17:09:38 /IDPLOAD VALUE=0x30 ; was 0x25<br />
<br />
* 2nd October 2015: We increased the front slow thresholds, on detectors G3 and G6. <br />
<br />
15-278-21:29:49 start idib_chg_thrshld(6, FRONT, SLOW, 0x40) ; was 0x30<br />
15-278-21:29:53 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-278-21:29:53 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-278-21:30:03 /IDPLOAD VALUE=0x40<br />
<br />
* 5th October 2015: We increased the front slow thresholds G6<br />
<br />
15-279-00:40:54 start idib_chg_thrshld (6, FRONT, SLOW, 0x50) ; was 0x40<br />
15-279-00:40:58 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-279-00:40:58 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-279-00:41:08 /IDPLOAD VALUE=0x50<br />
<br />
* On October 8, the front fast threshold was raised to try and raise livetime. Prior to these changes, D6 front livetime was at ~20%. As the changes were made on a BGS pass, the D6 front fast rates fell from 100k to 9000, and the front LT rose to 78%, but then worsened a lot the next day, so more action was taken (see next item).<br />
<br />
2015-281-21:49:49 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2015-281-21:49:59 /IDPLOAD VALUE=0xFF ; was 0xE0<br />
<br />
* On October 12, the HV on detector 6 was dropped by 200V, to ~1600V. The reasons for this: D6 front livetime had plummeted, and the fast threshold was already maxed. I considered raising the slow threshold but concluded that this is unlikely to help the problem -- the previous two slow threshold raises did no good at all, spectrograms have shown that the event noise is across the energy spectrum, not exclusively at low energies, and right now it's clearly the high fast rates that are eating up all the livetime, not the slows. So something is necessary to reduce fast rates, and an HV drop is the only shot at that. This also may help some of the other issues with D6. A first look at the results indicates that this change was successful in reducing fast rates and raising livetime. Hooray! Livetime is at ~80% after the voltage drop. Continue to watch this detector.<br />
<br />
2015-285-21:52:42 /IHVDAC DETECTOR=6, VOLTAGE=83 ;1593 V (was 1789 V)<br />
<br />
* On October 28 in an attempt to lower the high reset rates and the front slow counts registered the HV on the detector was changed to ~1397.<br />
<br />
2015-301-20:28:46 /ihvdac detector=6, voltage=73<br />
<br />
* November 11, front slow threshold lowered from 0x50 to 0x40. The noise appears<br />
relatively flat at those values, and we shouldn't experience too much additional<br />
noise counts.<br />
<br />
2015-318-07:03:56 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-318-07:04:07 /IDPLOAD VALUE=0x40 ; was 0x50<br />
<br />
* 2015 December 10 & 12, front slow threshold lowered in an attempt to recover energy spectrum before GRIPS.<br />
<br />
2015-344-19:58:19 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-344-19:58:28 /IDPLOAD VALUE=0x30 ; was 0x40<br />
<br />
2015-346-00:33:12 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-346-00:33:22 /IDPLOAD VALUE=0x20 ; was 0x30<br />
<br />
* 2016 January 8: The slow front threshold was increased from 0x30 to 0x80.<br />
<br />
2016-008-01:32:23 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2016-008-01:32:32 /IDPLOAD VALUE=0x80 ; was 0x30<br />
<br />
* 2016 January 13, 15: We dropped the D6 HV to 500 V, to reduce noise and see if any spectrum could be recovered. No luck there, so on 15 january, we dropped the HV to 200 V. D6 desegmented and began to fill the memory. We raised the HV back to 500 V, and turned events off.<br />
<br />
2016-013-23:02:09 /ihvdac detector=6, voltage=28 ; 500 V<br />
<br />
2016-015-01:41:44 /ihvdac detector=6, voltage=11<br />
2016-015-23:40:07 /ITMOFF VALUE=DIB6 ; off permanently<br />
2016-015-23:40:25 /IHVDAC DETECTOR=6, VOLTAGE=28 ; 500 V<br />
<br />
Post 2016 anneal<br />
<br />
* This detector was turned on on 26 January 2017<br />
<br />
* On 9-Feb-2017, the front fast threshold was raised from 0x70 to 0x80<br />
<br />
2017-039-20:11:12 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-039-20:11:21 /IDPULOAD VALUE=0x80 ; was 0x70<br />
<br />
* On 21-Feb-2017, front fast threshold was raised from 0x80 to 0x90<br />
<br />
17-052-17:21:46 start idib_chg_thrshld(6,FRONT,FAST,0x90) ; was 0x80<br />
17-052-17:22:22 start show_temps_avg<br />
17-052-17:22:40 CP1: 152.6 K<br />
17-052-17:22:40 CP2: 151.2 K<br />
17-052-17:22:40 CT1: 127.9 K<br />
17-052-17:22:40 CT2: 126.1 K<br />
17-052-17:22:40 TST: 189.0 K<br />
17-052-17:22:40 cp1 - ct1 = 24.61 K<br />
17-052-17:22:40 Cryo Power: 75.4 W<br />
17-052-17:22:40 Cryo Accel: 12.1 mG<br />
<br />
* On May 15 at 17:50 we lowered the HV from ~3400V to ~2000 V as an experiment to increase the Livetime. The experiment worked well.<br />
<br />
2017-135-17:50:10 /ihvdac detector=6, voltage=103 ; 2000 V<br />
<br />
* 16 August 2017, raised front slow threshold to reduce low energy noise<br />
17-228-19:57:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:57:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:57:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:57:48 /IDPULOAD VALUE=0x1C<br />
<br />
* On 27-sep-2017, the front fast rate threshold for detector 6 was lowered to 0x20, in an attempt to set the threshold to such a low value that individual fast rate counts would not be distinguished, thus reducing the fast rates and increasing live time. This was not successful, and the threshold was raised back to 0xFF.<br />
<br />
Here are the command times (UTC):<br />
<br />
2017-270-19:33:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:33:24 /IDPULOAD VALUE=0x80 ; was 0xFF<br />
<br />
2017-270-19:34:03 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:08 /IDPULOAD VALUE=0x40<br />
<br />
2017-270-19:34:45 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:50 /IDPULOAD VALUE=0x30<br />
<br />
2017-270-19:35:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:35:35 /IDPULOAD VALUE=0x20<br />
<br />
2017-270-19:36:21 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:36:29 /IDPULOAD VALUE=0x10<br />
<br />
2017-270-19:37:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:37:35 /IDPULOAD VALUE=0x00<br />
<br />
2017-270-19:38:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:38:18 /IDPULOAD VALUE=0xFF<br />
<br />
<br />
===D6 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C (after segmentation)<br />
|-<br />
| 2015 Jan 26 21:57:13 UTC || 0x30 (was 0x0C)<br />
|- <br />
| 2015 Jan 27 21:37:03 UTC || 0x0C (was 0x30)<br />
|- <br />
| 2015 Apr 09 21:17:27 UTC || 0x15 (was 0x0C)<br />
|-<br />
| 2015 Apr 14 15:49:25 UTC || 0x1A (was 0x15)<br />
|-<br />
| 2015 Apr 14 15:50:30 UTC || 0x1F (was 0x1A)<br />
|-<br />
| 2015 Apr 14 15:52:06 UTC || 0x15 (was 0x1F)<br />
|-<br />
| 2015 May 21 19:25:36 UTC || 0x20 (was 0x15)<br />
|-<br />
| 2015 Aug 25 00:03:04 UTC || 0x25 (was 0x20)<br />
|-<br />
| 2015 Sep 15 00:17:09 UTC || 0x30 (was 0x25)<br />
|-<br />
| 2015 Oct 02 21:29:49 UTC || 0x40 (was 0x30)<br />
|-<br />
| 2015 Oct 05 00:40:54 UTC || 0x50 (was 0x40)<br />
|-<br />
| 2015-11-14 07:04:07 UTC || 0x40 (was 0x50)<br />
|-<br />
| 2015-12-10 19:58:19 UTC || 0x30 (was 0x40)<br />
|-<br />
| 2015-12-12 00:33:22 UTC || 0x20 (was 0x30)<br />
|-<br />
| 2016-01-08 01:32:32 UTC || 0x80 (was 0x30)<br />
|-<br />
| post 2016 anneal || 0x68<br />
|-<br />
| 2017-08-16 19:57:48 || 0x1C<br />
|}<br />
<br />
===D6 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22 (after segmentation)<br />
|- <br />
| 2015-Jan-30 00:20:17 || 0x30 (was 0x22)<br />
|-<br />
| 2015-Feb-27 21:41:44 || 0x40 (was 0x30)<br />
|-<br />
| 2015-Mar-09 01:27:07 || 0x50 (was 0x40)<br />
|-<br />
| 2015-Mar-13 22:04:22 || 0x60 (was 0x50)<br />
|- <br />
| 2015-Mar-17 20:44:14 || 0x70 (was 0x60)<br />
|- <br />
| 2015-Mar-20 22:52:58 || 0x60 (was 0x70)<br />
|- <br />
| 2015-Mar-20 22:55:19 || 0x50 (was 0x60)<br />
|- <br />
| 2015-Mar-20 22:56:01 || 0x70 (was 0x50)<br />
|- <br />
| 2015-Apr-07 19:57 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Apr-09 17:33 || 0xA0 (was 0x90)<br />
|- <br />
| 2015-Apr-14 14:12 || 0xA8 (was 0xA0)<br />
|- <br />
| 2015-Apr-14 15:45 || 0xB0 (was 0xA8)<br />
|- <br />
| 2015-Apr-14 15:46 || 0xB8 (was 0xB0)<br />
|- <br />
| 2015-Apr-14 15:48 || 0xB0 (was 0xB8)<br />
|- <br />
| 2015-Aug-24 20:45:10 || 0xD0 (was 0xB0)<br />
|- <br />
| 2015-Sep-21 19:47:33 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Oct-08 21:49:59 || 0xFF (was 0xE0)<br />
|- <br />
| post 2016 anneal || 0x40<br />
|-<br />
| 2017-Feb-08 20:11:21 || 0x80 (was 0x70)<br />
|-<br />
| 2017-Feb-21 17:22:22 || 0x90 (was 0x80)<br />
|-<br />
| 2017-Feb-28 20:49:32 || 0xB0 (was 0x90)<br />
|-<br />
| 2017-Mar-01 || 0xFF<br />
|}<br />
<br />
===D6 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30 (after segmentation)<br />
|-<br />
| post 2016 anneal || 0x30<br />
|}<br />
<br />
===D6 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45 (after segmentation)<br />
|-<br />
| 2015-Jan-08 17:45:18 || 0x50 (was 0x45)<br />
|-<br />
| 2015-Jan-08 17:45:18 || 0x50 (was 0x45)<br />
|- <br />
| 2015-Mar-17 22:05:17 || 0x60 (was 0x50)<br />
|- <br />
| 2015-May-26 19:13:07 || 0x68 (was 0x60)<br />
|- <br />
| 2015-Jul-07 18:49:19 || 0x70 (was 0x68)<br />
|- <br />
| 2015-Jul-13 16:34:52 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Jul-29 17:19:45 || 0xB0 (was 0xA0)<br />
|- <br />
| 2015-Aug-24 20:47:36 || 0xC0 (was 0xB0)<br />
|- <br />
| 2015-Aug-25 00:04:34 || 0xD0 (was 0xC0)<br />
|- <br />
| 2015-Aug-31 18:01:56 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Sep-09 17:53:18 || 0xF0 (was 0xE0)<br />
|- <br />
| 2015-Sep-14 17:35:49 || 0xFF (was 0xF0)<br />
|- <br />
| post 2016 anneal || 0x45<br />
|- <br />
| 2017-Jan-27 || 0x60<br />
|}<br />
<br />
===D6 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 4510 V (unsegmented)<br />
|- <br />
| 2014-Aug-14 03:40 UTC || 4926 V (was 4510 V) (segmented)<br />
|- <br />
| 2015-Mar-20 21:12 UTC || 4500 V (was 4926 V)<br />
|- <br />
| 2015-Mar-20 22:50 UTC || 4142 V (was 4500 V)<br />
|- <br />
| 2015-Mar-25 22:47 UTC || 3750 V (was 4142 V)<br />
|-<br />
| 2015-May-26 19:11 UTC || 1985 V (was 2573 V)<br />
|-<br />
| 2015-Aug-28 17:32 UTC || 1789 V (was 1985 V)<br />
|-<br />
| 2015-Oct-12 21:52:42 UTC || 1593 V (was 1789 V)<br />
|-<br />
| 2015-Oct-28 20:28:46 UTC || 1397 V (was 1593 V)<br />
|-<br />
| 2016-Jan-13 23:02:09 UTC || 500 V (was 1000 V)<br />
|-<br />
| 2016-Jan-15 01:41:44 UTC || 200 V (was 500 V)<br />
|-<br />
| 2016-Jan-15 23:40:25 UTC || 500 V (was 200 V)<br />
|-<br />
| post 2016 anneal || 0V<br />
|-<br />
| 2016-Mar-01 12:37:00 UTC || 3480 V<br />
|-<br />
| 2017-May-15 17:50:10 UTC || 2000 V (was 3400 V)<br />
|-<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-10-04Tohban Report 2017-10-042017-10-04T17:41:31Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 27 September 2017<br />
|end_date = 4 October 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet, only some B flares<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 11 2 0 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 3 2 0 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 3 2 0 0<br />
<br />
There were RHESSI flares/GOES flares 6 / 13<br />
over the time range 26-Sep-17 03-Oct-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR levels between 5% and 30% for the last three days.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 131.8 and 130.0 K as of 2-oct-2017. The cold plates, 1 and 2 are 157.6 and 156.2 K. <br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0268 and 0.0272. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 27-sep-2017 TO 4-oct-2017<br />
TIME RANGE: 2017-09-27T00:00:00.000 -- 2017-10-04T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-01T18:15:00.000 -- 2017-10-01T18:20:00.000 300.00000<br />
2017-10-02T17:10:00.000 -- 2017-10-02T17:20:00.000 600.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-02T17:10:00.000 -- 2017-10-02T17:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-03T00:25:00.000 -- 2017-10-03T00:30:00.000 300.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No HV changes. On 27-sep-2017, the front fast rate threshold for detector 6 was lowered to 0x20, in an attempt to set the threshold to such a low value that individual fast rate counts would not be distinguished, thus reducing the fast rates and increasing live time. This was not successful, and the threshold was raised back to 0xFF.<br />
<br />
Here are the command times (UTC):<br />
<br />
2017-270-19:33:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:33:24 /IDPULOAD VALUE=0x80 ; was 0xFF<br />
<br />
2017-270-19:34:03 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:08 /IDPULOAD VALUE=0x40<br />
<br />
2017-270-19:34:45 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:50 /IDPULOAD VALUE=0x30<br />
<br />
2017-270-19:35:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:35:35 /IDPULOAD VALUE=0x20<br />
<br />
2017-270-19:36:21 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:36:29 /IDPULOAD VALUE=0x10<br />
<br />
2017-270-19:37:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:37:35 /IDPULOAD VALUE=0x00<br />
<br />
2017-270-19:38:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:38:18 /IDPULOAD VALUE=0xFF<br />
<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 18.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-10-04Tohban Report 2017-10-042017-10-04T17:39:34Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 27 September 2017 |end_date = 4 October 2017 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == ..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 27 September 2017<br />
|end_date = 4 October 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet, only some B flares<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 11 2 0 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 3 2 0 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 3 2 0 0<br />
<br />
There were RHESSI flares/GOES flares 6 / 13<br />
over the time range 26-Sep-17 03-Oct-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR levels between 5% and 30% for the last three days.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 131.8 and 130.0 K as of 2-oct-2017. The cold plates, 1 and 2 are 157.6 and 156.2 K. <br />
Cryocooler power is steady at 74.3W, cryocooler efficiencies are 0.0268 and 0.0272. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
DATA GAPS FOR 27-sep-2017 TO 4-oct-2017<br />
TIME RANGE: 2017-09-27T00:00:00.000 -- 2017-10-04T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-01T18:15:00.000 -- 2017-10-01T18:20:00.000 300.00000<br />
2017-10-02T17:10:00.000 -- 2017-10-02T17:20:00.000 600.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-02T17:10:00.000 -- 2017-10-02T17:20:00.000 600.00000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 1<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-10-03T00:25:00.000 -- 2017-10-03T00:30:00.000 300.00000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No HV changes. On 27-sep-2017, the front fast rate threshold was lowered to 0x20, in an attmept to set the threshold to such a low value that individual fast rate counts would not be distinguished, thus reducing the fast rates and increasing live time. THis was not successful, and the threshold was raised back to 0xFF.<br />
<br />
Here are the command times (UTC):<br />
<br />
2017-270-19:33:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:33:24 /IDPULOAD VALUE=0x80 ; was 0xFF<br />
<br />
2017-270-19:34:03 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:08 /IDPULOAD VALUE=0x40<br />
<br />
2017-270-19:34:45 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:34:50 /IDPULOAD VALUE=0x30<br />
<br />
2017-270-19:35:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:35:35 /IDPULOAD VALUE=0x20<br />
<br />
2017-270-19:36:21 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:36:29 /IDPULOAD VALUE=0x10<br />
<br />
2017-270-19:37:30 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:37:35 /IDPULOAD VALUE=0x00<br />
<br />
2017-270-19:38:14 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-270-19:38:18 /IDPULOAD VALUE=0xFF<br />
<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || Nominal<br />
|-<br />
| Ref. deadtime for Att.thresholds || 18.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-09-20Tohban Report 2017-09-202017-09-20T18:14:50Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 13 September 2017<br />
|end_date = 20 September 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 5 2 0 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 1 1 0 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 1 1 0 0<br />
<br />
There were RHESSI flares/GOES flares 3 / 7<br />
over the time range 12-Sep-17 19-Sep-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level currently at 41%, recovering from the previous week's activity. We are approximately 2 days behind recovering data.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 131.4 and 129.6 K as of 19-sep-2017. The cold plates, 1 and 2 are 156.8 and 155.4 K. <br />
Cryocooler power is steady at 74.1W, cryocooler efficiencies are 0.0271 and 0.0275. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 13-sep-2017 to 19-sep-2017<br />
TIME RANGE: 2017-09-13T00:00:00.000 -- 2017-09-19T00:00:00.000<br />
NO GAPS IN APP_ID = 1 (VC1-SOH)<br />
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-09-18T11:30:00.000 -- 2017-09-18T17:00:00.000 19800.000<br />
2017-09-18T17:50:00.000 -- 2017-09-19T00:00:00.000 22200.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold or HV changes.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || See Notes above<br />
|-<br />
| Ref. deadtime for Att.thresholds || 18.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-09-20Tohban Report 2017-09-202017-09-20T18:05:48Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 13 September 2017 |end_date = 20 September 2017 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} ..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 13 September 2017<br />
|end_date = 20 September 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Quiet<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 5 2 0 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 1 1 0 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 1 1 0 0<br />
<br />
There were RHESSI flares/GOES flares 3 / 7<br />
over the time range 12-Sep-17 19-Sep-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level currently at 41%, recovering from the previous week's activity. We are approximately 2 days behind recovering data.<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 131.4 and 129.6 K as of 19-sep-2017. The cold plates, 1 and 2 are 156.8 and 155.4 K. <br />
Cryocooler power is steady at 74.1W, cryocooler efficiencies are 0.0271 and 0.0275. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 13-sep-2017 to 19-sep-2017<br />
TIME RANGE: 2017-09-13T00:00:00.000 -- 2017-09-19T00:00:00.000<br />
NO GAPS IN APP_ID = 1 (VC1-SOH)<br />
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-09-18T11:30:00.000 -- 2017-09-18T17:00:00.000 19800.000<br />
2017-09-18T17:50:00.000 -- 2017-09-19T00:00:00.000 22200.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold or HV changes.<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || See Notes above<br />
|-<br />
STOPHERE| Ref. deadtime for Att.thresholds || 18.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_8Detector 82017-08-23T18:47:41Z<p>Jmctiernan: </p>
<hr />
<div>'This page contains information about changes/issues for RHESSI detector 8 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: [[Detector 8 anneal 2012]]<br />
<br />
===Post 2014 Anneal===<br />
<br />
Detector 8 is SEGMENTED after the 2014 anneal!<br />
<br />
On March 13, 2015 the rear fast threshold was changed.<br />
<br />
15-072-22:05:41 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-072-22:05:56 /IDPLOAD VALUE=0x55<br />
<br />
* On April 7 2015, the rear fast threshold was changed due to extremely low livetime in the rear segment. It is not clear if this helped; the action will probably be repeated.<br />
<br />
15-097-19:57:24 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-097-19:57:37 /IDPLOAD VALUE=0x70 ; was 0x65<br />
<br />
* On April 9 2015, the rear fast threshold was changed due to low livetime in the rear segment.<br />
<br />
15-099-17:38:09 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-099-17:38:23 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* On April 13 at 17:47UT we changed the Rear Fast threshold for detector 8.<br />
<br />
15-103-17:46:36 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-103-17:46:47 /IDPLOAD VALUE=0x90 ; was 0x80<br />
<br />
* On April 14 at 17:25 UT we changed the Rear Fast threshold for detector 8.<br />
<br />
15-104-17:25:11 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-104-17:25:22 /IDPLOAD VALUE=0xA0 ; was 0x90<br />
<br />
* On April 24 at 19:14 UT Rear Fast Threshold was increased.<br />
<br />
15-114-19:14:10 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-114-19:14:20 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
* On May 4 at 20:49 UT Rear Fast Threshold was increased<br />
<br />
15-124-20:49:54 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
15-124-20:50:09 /IDPLOAD VALUE=0xC0 ; was 0xB0<br />
<br />
* On May 15 the front slow threshold was increased<br />
<br />
2015-135-21:36:06 /IDPUTABLE8 OFFSET=FRONTSLOWDAC <br />
2015-135-21:36:25 /IDPLOAD VALUE=0x15 ; was 0x0C<br />
<br />
* On June 11 2015 the front fast threshold was raised because the fast rates were high and the livetime was low. This action was NOT successful in reducing the fast rates -- they dropped ever so slightly but not much. Therefore, the livetime remained low.<br />
<br />
* Late July 2015: D8 rear has not been returning good data since mid-May, but it was noticed that its fast threshold was never turned up all the way. On July 24 2015 the rear fast threshold was maxed out to see if that recovered a usable level of events from this detector. Unfortunately, it was not successful. <br />
2015-205-17:21:40 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
2015-205-17:21:50 /IDPLOAD VALUE=0xFF ; was 0xD0<br />
<br />
* 15 September 2015: The front slow threshold was raised to try to eliminate low energy noise counts.<br />
2015-258-17:09:51 /IDPUTABLE8 OFFSET=frontslowDAC<br />
2015-258-17:10:22 /IDPLOAD VALUE=0x20 ; was 0x15<br />
<br />
* On October 28 in an attempt to lower the high reset rates and the front slow counts registered the HV on the detector was changed to ~2181.<br />
2015-301-20:29:56 /ihvdac detector=8, voltage=112<br />
<br />
* November 14, HV dropped by 400V to 1789V<br />
<br />
2015-318-07:02:37 /ihvdac detector=8, voltage=92<br />
<br />
* November 23, HV dropped by 400 V to 1400 V in an attempt to reduce noise<br />
<br />
2015-327-22:09:13 /ihvdac detector=8, voltage=72 ; (now 1397.1 V)<br />
<br />
* December 28, D8 events were turned off; rear ULD events were filling memory<br />
<br />
2015-362-10:52:03 /itmoff value=dib8<br />
2015-362-10:52:09 start sc_tbl_loadpkt("T15362SLTN61_No_G3_G4_G8_G9.01")<br />
<br />
===Post 2016 Anneal===<br />
<br />
Detector 8 is SEGMENTED after the 2016 anneal!<br />
<br />
* 2016-05-24: D8 rear is mimicing the light leak behavior seen in D3 although this has not previously been seen in D8. Its possible we see the light leak here because of other detectors being turned off<br />
16-145-16:18:03 start idib_chg_thrshld(8, REAR, FAST, 0x60)<br />
16-145-16:18:07 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-145-16:18:07 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
16-145-16:18:16 /IDPULOAD VALUE=0x60<br />
<br />
* 2016-08-15: Light leak threshold changes<br />
16-228-22:52:25 start idib_chg_thrshld(8, REAR, FAST, 0x68) <br />
16-228-22:52:28 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-228-22:52:28 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
16-228-22:52:34 /IDPULOAD VALUE=0x68<br />
<br />
* 2016-10-07: Rear fast threshold increase for dead time<br />
2016-281-20:39:12 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
2016-281-20:39:22 /IDPULOAD VALUE=0x80<br />
<br />
* 2016-10-09: Threshold changes to reduce dead time<br />
16-283-19:43:43 start idib_chg_thrshld(8, FRONT, SLOW, 0x30)<br />
16-283-19:43:47 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-283-19:43:47 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
16-283-19:43:55 /IDPULOAD VALUE=0x30<br />
16-283-19:44:00 start write_ssr_info<br />
<br />
16-283-19:44:16 start idib_chg_thrshld(8, FRONT, FAST, 0x40)<br />
16-283-19:44:20 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-283-19:44:20 /IDPUTABLE8 OFFSET=FRONTFASTDAC<br />
16-283-19:44:24 /IDPULOAD VALUE=0x40<br />
<br />
16-283-19:44:45 start idib_chg_thrshld(8, REAR, FAST, 0xA0)<br />
16-283-19:44:48 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-283-19:44:48 /IDPUTABLE8 OFFSET=REARFASTDAC<br />
16-283-19:44:58 /IDPULOAD VALUE=0xA0<br />
<br />
* 2016-10-10: Reverted front slow threshold, not much effect on dead time<br />
16-284-22:33:32 start idib_chg_thrshld(8, FRONT, SLOW, 0x0C)<br />
16-284-22:33:36 /IDPUDUMPTABL TABLE=DIBTBL8<br />
16-284-22:33:36 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
16-284-22:33:47 /IDPULOAD VALUE=0x0C<br />
<br />
* 2016-10-11: Lowered HV to 3000V to decrease dead time, worked pretty well<br />
16-285-18:48:24 /ihvdac detector=8, voltage=0x9A<br />
<br />
* 2016-10-13: Turned off this detector<br />
Turn off detector 8 <br />
16-287-16:14:04 /itmoff value=8<br />
16-287-16:14:57 /ihvdac detector=8,voltage=0<br />
16-287-16:16:53 /idibpwroff value=8<br />
<br />
* 2017-01-17: Turned on<br />
<br />
2017-017-18:38:37 start idib_on_g8<br />
2017-017-18:39:29 start ihv_ramp_stage1_g8 ; 171 V<br />
<br />
2017-017-20:14:00 start ihv_ramp_stage2_g8 ; 1000 V<br />
<br />
2017-017-21:52:46 start ihv_ramp_stage3_g8 ; 2000 V<br />
<br />
2017-017-23:32:39 start ihv_ramp_stage4_g8 ; 3000 V<br />
<br />
2017-017-23:39:40 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
2017-017-23:39:56 /IDPULOAD VALUE=0x15 ; was 0x0C<br />
<br />
2017-018-01:14:25 /IDPUTABLE8 OFFSET=FRONTFASTDAC<br />
2017-018-01:14:31 /IDPULOAD VALUE=0x60 ; was 0x40<br />
<br />
2017-018-01:15:22 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
2017-018-01:15:28 /IDPULOAD VALUE=0x1C ; was 0x15<br />
<br />
* 2017 Jan 19: switched off<br />
<br />
* 2017 April 3: Turned on in response to high solar activity. HV was raised to ~1000V at 16:25 and then up to ~2000V at 19:45 UT.<br />
<br />
* 2017 April 17. D8 events were turned on; Front Fast threshold was adjusted<br />
2017-107-21:31:35 start idib_on_g8<br />
2017-107-21:32:20 start ihv_ramp_stage2_g8 ; 1000 V<br />
2017-107-23:09:58 start ihv_ramp_stage3_g8<br />
17-108-00:40:32 start idib_chg_thrshld(8, FRONT, FAST, 0x90)<br />
<br />
* 2017 April 25: Raised front fast threshold from 0x90 to 0xB0, increased live time from 2.7% to 73%<br />
<br />
2017-116-00:08:38 /IDPUTABLE8 OFFSET=FRONTFASTDAC<br />
2017-116-00:08:48 /IDPULOAD VALUE=0xA0 ; was 0x90<br />
<br />
2017-116-00:09:33 /IDPUTABLE8 OFFSET=FRONTFASTDAC<br />
2017-116-00:09:41 /IDPULOAD VALUE=0xB0 ; was 0xA0<br />
<br />
* 2017 August 16: Raised front slow threshold to reduce low-energy noise<br />
17-228-19:55:15 start idib_chg_thrshld(8,FRONT,SLOW,0x20)<br />
17-228-19:55:19 /IDPUDUMPTABL TABLE=DIBTBL8<br />
17-228-19:55:19 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
17-228-19:55:26 /IDPULOAD VALUE=0x20<br />
<br />
===D8 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C<br />
|- <br />
| 2015-May-15 21:36:25|| 0x15 (was 0x0C)<br />
|- <br />
| 2015-Sep-15 17:35|| 0x20 (was 0x15)<br />
|- <br />
| post 2016 anneal || 0x0C<br />
|-<br />
| 2017-Aug-16 19:55:26 || 0x20<br />
|-<br />
| 2016-10-09 19:43:55 || 0x30 (Was 0x0C)<br />
|-<br />
| 2016-10-10 22:33:47 || 0x0C (Was 0x30)<br />
|-<br />
| 2017-01-17 01:15:28 || 0x1C (Was 0x15)<br />
|-<br />
<br />
|}<br />
<br />
===D8 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22<br />
|- <br />
| 2015-Jun-11 20:18:18 || 0x30 (was 0x22)<br />
|- <br />
| 2015-Jul-31 21:41:31 || 0x40 (was 0x30)<br />
|- <br />
| 2015-Aug-03 20:31:56 || 0x50 (was 0x40)<br />
|- <br />
| 2015-Aug-28 17:35:18 || 0x60 (was 0x50)<br />
|- <br />
| post 2016 anneal || 0x22<br />
|- <br />
| 2016-10-09 19:44:24 || 0x40 (was 0x22)<br />
|- <br />
| 2016-01-17 01:14:31 || 0x60 (was 0x40)<br />
|-<br />
| 2017-04-18 00:40:32 || 0x90 (was 0x60)<br />
|-<br />
| 2017-04-26 00:09:41 || 0xB0 (was 0x90)<br />
|-<br />
| 2017-05-09 19:08:43 || 0xE0 (was 0xC0)<br />
|}<br />
<br />
===D8 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30<br />
|- <br />
| post 2016 anneal || 0x30<br />
|}<br />
<br />
===D8 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45<br />
|- <br />
| 2015-Mar-13 22:05:56 || 0x55 (was 0x45)<br />
|- <br />
| 2015-Mar-25 19:30:35 || 0x65 (was 0x55)<br />
|- <br />
| 2015-Apr-07 19:58 || 0x70 (was 0x65)<br />
|- <br />
| 2015-Apr-09 17:38:23 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Apr-13 17:46:47 || 0x90 (was 0x80)<br />
|-<br />
| 2015-Apr-14 17:25:22 || 0xA0 (was 0x90)<br />
|- <br />
| 2015-Apr-24 19:14:20 || 0xB0 (was 0xA0)<br />
|-<br />
|2015-May-04 20:49:54 || 0xC0 (was 0xB0)<br />
|-<br />
|2015-Jul-24 17:21:50 || 0xFF (was 0xD0)<br />
|- <br />
| post 2016 anneal || 0x45<br />
|-<br />
| 2016-May-24 16:18:16 || 0x60 (was 0x45)<br />
|-<br />
| 2016-Aug-15 22:52:28 || 0x68 (was 0x60)<br />
|-<br />
| 2016-10-07 19:44:58 UTC || 0x80 (was 0x68)<br />
|-<br />
| 2016-10-09 20:39:22 UTC || 0xA0 (was 0x80)<br />
|-<br />
| 2017-05-09 19:09:28 UTC || 0xC0 (was 0xA0)<br />
|}<br />
<br />
===D8 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 3995 V<br />
|-<br />
|2015-May-8 22:33:30 || 3554 V (was 3995 V)<br />
|-<br />
|2015-May-12 21:03:52 || 2573 V (was 3554 V)<br />
|-<br />
|2015-Oct-28 20:29:56 || 2181 V (was 2573 V)<br />
|-<br />
|2015-11-14 07:02:37 || 1789 V (was 2179 V)<br />
|-<br />
|2015-11-23 22:09:13 || 1397 V (was 1789 V)<br />
|- <br />
| post 2016 anneal || 4019 V<br />
|-<br />
| 2016-10-11 18:48:24 || 2990 V (was 4000 V)<br />
|-<br />
| 2016-Oct-13 16:14:04 || 0V<br />
|-<br />
| 2017-01-17 23:32:29 || 3000 V (was OFF)<br />
|-<br />
| 2017-Jan-19 || 0V <br />
|-<br />
| 2017-Apr-3 || 2000 V<br />
|-<br />
| 2017-Apr-11 || 0 V<br />
|-<br />
| 2017-Apr-18 || 2000 V<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_6Detector 62017-08-23T18:43:06Z<p>Jmctiernan: </p>
<hr />
<div>This page contains information about changes/issues for RHESSI detector 6 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: [[Detector 6 anneal 2012]]<br />
<br />
===Notes===<br />
<br />
After the 2014 anneal, detector 6 began its reincarnated life as an unsegmented detector but segmented shortly after (see below).<br />
<br />
<br />
* On 2014 August 14, the HV on D6 was raised to 4926V in an attempt to segment it. This was successful, and D6 now operates as a segmented detector. Since its segmentation is borderline as of Aug/Sept 2014, it commonly unsegments during and just after the SAA.<br />
<br />
* On 2014 Jan 8, the rear fast threshold was raised since fast counts were eating up a lot of livetime.<br />
<br />
15-008-17:44:55 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
15-008-17:45:18 /IDPULOAD VALUE=0x50 ;(was 0x45)<br />
<br />
* * D6 has been showing some strange peaks in the spectrum; these are best seen as multiple lines (that drift) in spectrograms. On Monday, Jan 28 we raised the slow front threshold on D6 to ~10 keV and kept it there for a day before returning to the nominal ~3 keV. This is intended to see if the slow threshold affects the abnormal spectral lines.<br />
15-026-21:57:13 / D6 front slow threshold to 0x30 (was 0x0C).<br />
15-027-21:37:03 / D6 front slow threshold to 0x0C (was 0x30).<br />
<br />
<br />
* D6 fast rates are a bit high (have been rising slowly over the past week). It would be a good idea to raise the front fast threshold a touch. I didn't want to do this at the same time as the slow threshold experiment! <br />
<br />
*D6 front fast threshold was adjusted from default (0x22) due to increased rates, based on the above suggestion. Rates dropped from 3300 to 1250 when the change was made.<br />
15-030-00:19:54 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-030-00:20:17 /IDPLOAD VALUE=0x30 ; was 0x22<br />
<br />
* On 2015 February 27 Front Fast threshold was raised <br />
15-058-21:41:11 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-058-21:41:44 /IDPLOAD VALUE=0x40 (was 0x30)<br />
<br />
*Another raise to D6 front fast threshold on 2015 March 9:<br />
15-068-01:26:56 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-068-01:27:07 /IDPLOAD VALUE=0x50<br />
<br />
*On 2015 March 13 another raise was made to D6 front fast threshold and a raise of the rear fast threshold was made:<br />
15-072-22:04:01 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-072-22:04:22 /IDPLOAD VALUE=0x60<br />
<br />
15-072-22:05:07 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
15-072-22:05:17 /IDPLOAD VALUE=0x60<br />
<br />
*Again 2015 March 17 D6 front fast threshold was increased:<br />
15-076-20:44:01 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-076-20:44:14 /IDPLOAD VALUE=0x70<br />
<br />
On 2015 March 20 D6 HV was dropped in two 10 step increments, twice. Also we attempted to lower the front fast threshold to 0x50, but changed this almost immediately when the live time dropped to 3%:<br />
15-079-21:10:49 /IHVDAC DETECTOR=6, VOLTAGE=243<br />
15-079-21:12:47 /IHVDAC DETECTOR=6, VOLTAGE=233<br />
<br />
15-079-22:49:23 /ihvdac detector=6, voltage=223<br />
15-079-22:50:44 /ihvdac detector=6, voltage=213<br />
<br />
15-079-22:52:39 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:52:58 /IDPLOAD VALUE=0x60<br />
<br />
15-079-22:55:07 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:55:19 /IDPLOAD VALUE=0x50<br />
<br />
15-079-22:55:53 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-079-22:56:01 /IDPLOAD VALUE=0x70<br />
<br />
On 2015 March 25 D6 HV was dropped in 20 steps. <br />
15-084-22:45:15 /ihvdac detector=6, voltage=203<br />
15-084-22:46:45 /ihvdac detector=6, voltage=193 (3750 V)<br />
<br />
* April 7 2015: the front fast threshold was raised due to high fast rates that were significantly reducing livetime. This helped, but not a lot, so the action will probably be repeated soon.<br />
15-097-19:56:35 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-097-19:56:45 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* April 9 2015: The front fast and the front slow threshold were raised up to recover the livetime and trying to reduce the noise on the slow valid counts.<br />
<br />
15-099-17:32:59 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-099-17:33:11 /IDPLOAD VALUE=0xA0<br />
<br />
15-099-21:17:16 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-099-21:17:27 /IDPLOAD VALUE=0x15<br />
<br />
* On Abril 14 starting at 14:06 UT we made the next changes for detectors 6 trying to decrease valid counts on the Slow Front segment.<br />
<br />
15-104-14:11:57 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
15-104-14:12:05 /IDPLOAD VALUE=0xA8<br />
15-104-15:45:14 /IDPLOAD VALUE=0xB0<br />
15-104-15:46:24 /IDPLOAD VALUE=0xB8<br />
15-104-15:47:36 /IDPLOAD VALUE=0xB0<br />
<br />
15-104-15:49:18 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-104-15:49:25 /IDPLOAD VALUE=0x1A<br />
15-104-15:50:30 /IDPLOAD VALUE=0x1F<br />
15-104-15:52:06 /IDPLOAD VALUE=0x15<br />
<br />
* On May 21 starting at 19:23 UTC we made the next changes on Front Slow threshold:<br />
<br />
15-141-19:25:36 start idib_chg_thrshld (6, FRONT, SLOW, 0x20) --> Was 0x15<br />
15-141-19:25:46 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-141-19:25:47 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-141-19:25:55 /IDPLOAD VALUE=0x20<br />
<br />
* On May 26 we lowered the HV on detector 6 by 30 counts to a value of 1984 V. This change gave detector 6 the lowest voltage of all the detectors. G6 remained segmented through the pass.<br />
<br />
2015-146-19:11:11 /IHVDAC DETECTOR=6, VOLTAGE=103 (1985 V)<br />
<br />
We also increased the rear fast threshold on detector 6 by 0x08<br />
<br />
2015-146-19:13:07 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-146-19:13:25 /IDPLOAD VALUE=0x68 ; was 0x60<br />
<br />
* On 2015 July 7, D6 rear fast threshold was raised due to decreased livetime<br />
<br />
2015-188-18:49:02 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-188-18:49:19 /IDPLOAD VALUE=0x70 ; was 0x68<br />
<br />
* The rear fast threshold was changed on July 13 2015 due to dropping livetime in the rear:<br />
2015-194-16:34:40 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-194-16:34:52 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* The rear fast threshold was changed on July 24 2015 due to low livetime. However, the change probably wasn't needed; the tohban hadn't noticed that a change had already been made a few days ago. The next tohban can reverse the change if desired.<br />
2015-205-17:19:29 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-205-17:19:45 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
* Aug. 24, 2015: Detector 6: Both front and rear fast thresholds were raised again. This successfully brought the livetime up to 75% in the front, but didn't really change anything in the rear. Another attempt was made with the rear fast threshold, but again no change. The slow threshold was also raised, which brought the slow rates down from 200k to 5k.<br />
<br />
2015-236-20:44:59 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2015-236-20:45:10 /IDPLOAD VALUE=0xD0 ; was 0xB0<br />
<br />
2015-237-00:02:53 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-237-00:03:04 /IDPLOAD VALUE=0x25 ; was 0x20<br />
<br />
2015-236-20:47:27 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-236-20:47:36 /IDPLOAD VALUE=0xC0 ; was 0xB0<br />
<br />
2015-237-00:04:26 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-237-00:04:34 /IDPLOAD VALUE=0xD0 ; was 0xC0<br />
<br />
* Detector 6 was showing elevated slow front rates. We made a HV change on August 28, lowering the voltage by 200V. The change made the slow front rates to decrease, but still the detector shows elevated slow front counts. On August 31, the rear fast threshold was raised to increase the detector livetime.<br />
<br />
2015-240-17:32:26 /ihvdac detector=6, voltage=93 (from 1984 to 1789 V)<br />
<br />
2015-243-18:01:47 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-243-18:01:56 /IDPLOAD VALUE=0xE0 ; was 0xD0 <br />
<br />
* The rear fast threshold was changed on Sep 9 2015 due to low livetime.<br />
<br />
2015-252-17:53:05 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-252-17:53:18 /IDPLOAD VALUE=0xF0 ; was 0xF0<br />
<br />
* On September 14 2015 we raised the rear fast threshold on D6 from 0xF0 to 0xFF and on September 15 we raised the RHESSI D6 front slow threshold from 0x25 to 0x30.<br />
<br />
2015-257-17:35:39 /IDPUTABLE6 OFFSET=REARFASTDAC<br />
2015-257-17:35:49 /IDPLOAD VALUE=0xFF ; was 0xF0<br />
<br />
2015-258-17:09:29 /IDPUTABLE6 OFFSET=frontslowDAC<br />
2015-258-17:09:38 /IDPLOAD VALUE=0x30 ; was 0x25<br />
<br />
* 2nd October 2015: We increased the front slow thresholds, on detectors G3 and G6. <br />
<br />
15-278-21:29:49 start idib_chg_thrshld(6, FRONT, SLOW, 0x40) ; was 0x30<br />
15-278-21:29:53 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-278-21:29:53 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-278-21:30:03 /IDPLOAD VALUE=0x40<br />
<br />
* 5th October 2015: We increased the front slow thresholds G6<br />
<br />
15-279-00:40:54 start idib_chg_thrshld (6, FRONT, SLOW, 0x50) ; was 0x40<br />
15-279-00:40:58 /IDPUDUMPTABL TABLE=DIBTBL6<br />
15-279-00:40:58 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
15-279-00:41:08 /IDPLOAD VALUE=0x50<br />
<br />
* On October 8, the front fast threshold was raised to try and raise livetime. Prior to these changes, D6 front livetime was at ~20%. As the changes were made on a BGS pass, the D6 front fast rates fell from 100k to 9000, and the front LT rose to 78%, but then worsened a lot the next day, so more action was taken (see next item).<br />
<br />
2015-281-21:49:49 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2015-281-21:49:59 /IDPLOAD VALUE=0xFF ; was 0xE0<br />
<br />
* On October 12, the HV on detector 6 was dropped by 200V, to ~1600V. The reasons for this: D6 front livetime had plummeted, and the fast threshold was already maxed. I considered raising the slow threshold but concluded that this is unlikely to help the problem -- the previous two slow threshold raises did no good at all, spectrograms have shown that the event noise is across the energy spectrum, not exclusively at low energies, and right now it's clearly the high fast rates that are eating up all the livetime, not the slows. So something is necessary to reduce fast rates, and an HV drop is the only shot at that. This also may help some of the other issues with D6. A first look at the results indicates that this change was successful in reducing fast rates and raising livetime. Hooray! Livetime is at ~80% after the voltage drop. Continue to watch this detector.<br />
<br />
2015-285-21:52:42 /IHVDAC DETECTOR=6, VOLTAGE=83 ;1593 V (was 1789 V)<br />
<br />
* On October 28 in an attempt to lower the high reset rates and the front slow counts registered the HV on the detector was changed to ~1397.<br />
<br />
2015-301-20:28:46 /ihvdac detector=6, voltage=73<br />
<br />
* November 11, front slow threshold lowered from 0x50 to 0x40. The noise appears<br />
relatively flat at those values, and we shouldn't experience too much additional<br />
noise counts.<br />
<br />
2015-318-07:03:56 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-318-07:04:07 /IDPLOAD VALUE=0x40 ; was 0x50<br />
<br />
* 2015 December 10 & 12, front slow threshold lowered in an attempt to recover energy spectrum before GRIPS.<br />
<br />
2015-344-19:58:19 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-344-19:58:28 /IDPLOAD VALUE=0x30 ; was 0x40<br />
<br />
2015-346-00:33:12 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2015-346-00:33:22 /IDPLOAD VALUE=0x20 ; was 0x30<br />
<br />
* 2016 January 8: The slow front threshold was increased from 0x30 to 0x80.<br />
<br />
2016-008-01:32:23 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
2016-008-01:32:32 /IDPLOAD VALUE=0x80 ; was 0x30<br />
<br />
* 2016 January 13, 15: We dropped the D6 HV to 500 V, to reduce noise and see if any spectrum could be recovered. No luck there, so on 15 january, we dropped the HV to 200 V. D6 desegmented and began to fill the memory. We raised the HV back to 500 V, and turned events off.<br />
<br />
2016-013-23:02:09 /ihvdac detector=6, voltage=28 ; 500 V<br />
<br />
2016-015-01:41:44 /ihvdac detector=6, voltage=11<br />
2016-015-23:40:07 /ITMOFF VALUE=DIB6 ; off permanently<br />
2016-015-23:40:25 /IHVDAC DETECTOR=6, VOLTAGE=28 ; 500 V<br />
<br />
Post 2016 anneal<br />
<br />
* This detector was turned on on 26 January 2017<br />
<br />
* On 9-Feb-2017, the front fast threshold was raised from 0x70 to 0x80<br />
<br />
2017-039-20:11:12 /IDPUTABLE6 OFFSET=FRONTFASTDAC<br />
2017-039-20:11:21 /IDPULOAD VALUE=0x80 ; was 0x70<br />
<br />
* On 21-Feb-2017, front fast threshold was raised from 0x80 to 0x90<br />
<br />
17-052-17:21:46 start idib_chg_thrshld(6,FRONT,FAST,0x90) ; was 0x80<br />
17-052-17:22:22 start show_temps_avg<br />
17-052-17:22:40 CP1: 152.6 K<br />
17-052-17:22:40 CP2: 151.2 K<br />
17-052-17:22:40 CT1: 127.9 K<br />
17-052-17:22:40 CT2: 126.1 K<br />
17-052-17:22:40 TST: 189.0 K<br />
17-052-17:22:40 cp1 - ct1 = 24.61 K<br />
17-052-17:22:40 Cryo Power: 75.4 W<br />
17-052-17:22:40 Cryo Accel: 12.1 mG<br />
<br />
* On May 15 at 17:50 we lowered the HV from ~3400V to ~2000 V as an experiment to increase the Livetime. The experiment worked well.<br />
<br />
2017-135-17:50:10 /ihvdac detector=6, voltage=103 ; 2000 V<br />
<br />
* 16 August 2017, raised front slow threshold to reduce low energy noise<br />
17-228-19:57:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:57:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:57:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:57:48 /IDPULOAD VALUE=0x1C<br />
<br />
===D6 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C (after segmentation)<br />
|-<br />
| 2015 Jan 26 21:57:13 UTC || 0x30 (was 0x0C)<br />
|- <br />
| 2015 Jan 27 21:37:03 UTC || 0x0C (was 0x30)<br />
|- <br />
| 2015 Apr 09 21:17:27 UTC || 0x15 (was 0x0C)<br />
|-<br />
| 2015 Apr 14 15:49:25 UTC || 0x1A (was 0x15)<br />
|-<br />
| 2015 Apr 14 15:50:30 UTC || 0x1F (was 0x1A)<br />
|-<br />
| 2015 Apr 14 15:52:06 UTC || 0x15 (was 0x1F)<br />
|-<br />
| 2015 May 21 19:25:36 UTC || 0x20 (was 0x15)<br />
|-<br />
| 2015 Aug 25 00:03:04 UTC || 0x25 (was 0x20)<br />
|-<br />
| 2015 Sep 15 00:17:09 UTC || 0x30 (was 0x25)<br />
|-<br />
| 2015 Oct 02 21:29:49 UTC || 0x40 (was 0x30)<br />
|-<br />
| 2015 Oct 05 00:40:54 UTC || 0x50 (was 0x40)<br />
|-<br />
| 2015-11-14 07:04:07 UTC || 0x40 (was 0x50)<br />
|-<br />
| 2015-12-10 19:58:19 UTC || 0x30 (was 0x40)<br />
|-<br />
| 2015-12-12 00:33:22 UTC || 0x20 (was 0x30)<br />
|-<br />
| 2016-01-08 01:32:32 UTC || 0x80 (was 0x30)<br />
|-<br />
| post 2016 anneal || 0x68<br />
|-<br />
| 2017-08-16 19:57:48 || 0x1C<br />
|}<br />
<br />
===D6 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22 (after segmentation)<br />
|- <br />
| 2015-Jan-30 00:20:17 || 0x30 (was 0x22)<br />
|-<br />
| 2015-Feb-27 21:41:44 || 0x40 (was 0x30)<br />
|-<br />
| 2015-Mar-09 01:27:07 || 0x50 (was 0x40)<br />
|-<br />
| 2015-Mar-13 22:04:22 || 0x60 (was 0x50)<br />
|- <br />
| 2015-Mar-17 20:44:14 || 0x70 (was 0x60)<br />
|- <br />
| 2015-Mar-20 22:52:58 || 0x60 (was 0x70)<br />
|- <br />
| 2015-Mar-20 22:55:19 || 0x50 (was 0x60)<br />
|- <br />
| 2015-Mar-20 22:56:01 || 0x70 (was 0x50)<br />
|- <br />
| 2015-Apr-07 19:57 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Apr-09 17:33 || 0xA0 (was 0x90)<br />
|- <br />
| 2015-Apr-14 14:12 || 0xA8 (was 0xA0)<br />
|- <br />
| 2015-Apr-14 15:45 || 0xB0 (was 0xA8)<br />
|- <br />
| 2015-Apr-14 15:46 || 0xB8 (was 0xB0)<br />
|- <br />
| 2015-Apr-14 15:48 || 0xB0 (was 0xB8)<br />
|- <br />
| 2015-Aug-24 20:45:10 || 0xD0 (was 0xB0)<br />
|- <br />
| 2015-Sep-21 19:47:33 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Oct-08 21:49:59 || 0xFF (was 0xE0)<br />
|- <br />
| post 2016 anneal || 0x40<br />
|-<br />
| 2017-Feb-08 20:11:21 || 0x80 (was 0x70)<br />
|-<br />
| 2017-Feb-21 17:22:22 || 0x90 (was 0x80)<br />
|-<br />
| 2017-Feb-28 20:49:32 || 0xB0 (was 0x90)<br />
|-<br />
| 2017-Mar-01 || 0xFF<br />
|}<br />
<br />
===D6 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30 (after segmentation)<br />
|-<br />
| post 2016 anneal || 0x30<br />
|}<br />
<br />
===D6 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45 (after segmentation)<br />
|-<br />
| 2015-Jan-08 17:45:18 || 0x50 (was 0x45)<br />
|-<br />
| 2015-Jan-08 17:45:18 || 0x50 (was 0x45)<br />
|- <br />
| 2015-Mar-17 22:05:17 || 0x60 (was 0x50)<br />
|- <br />
| 2015-May-26 19:13:07 || 0x68 (was 0x60)<br />
|- <br />
| 2015-Jul-07 18:49:19 || 0x70 (was 0x68)<br />
|- <br />
| 2015-Jul-13 16:34:52 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Jul-29 17:19:45 || 0xB0 (was 0xA0)<br />
|- <br />
| 2015-Aug-24 20:47:36 || 0xC0 (was 0xB0)<br />
|- <br />
| 2015-Aug-25 00:04:34 || 0xD0 (was 0xC0)<br />
|- <br />
| 2015-Aug-31 18:01:56 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Sep-09 17:53:18 || 0xF0 (was 0xE0)<br />
|- <br />
| 2015-Sep-14 17:35:49 || 0xFF (was 0xF0)<br />
|- <br />
| post 2016 anneal || 0x45<br />
|- <br />
| 2017-Jan-27 || 0x60<br />
|}<br />
<br />
===D6 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 4510 V (unsegmented)<br />
|- <br />
| 2014-Aug-14 03:40 UTC || 4926 V (was 4510 V) (segmented)<br />
|- <br />
| 2015-Mar-20 21:12 UTC || 4500 V (was 4926 V)<br />
|- <br />
| 2015-Mar-20 22:50 UTC || 4142 V (was 4500 V)<br />
|- <br />
| 2015-Mar-25 22:47 UTC || 3750 V (was 4142 V)<br />
|-<br />
| 2015-May-26 19:11 UTC || 1985 V (was 2573 V)<br />
|-<br />
| 2015-Aug-28 17:32 UTC || 1789 V (was 1985 V)<br />
|-<br />
| 2015-Oct-12 21:52:42 UTC || 1593 V (was 1789 V)<br />
|-<br />
| 2015-Oct-28 20:28:46 UTC || 1397 V (was 1593 V)<br />
|-<br />
| 2016-Jan-13 23:02:09 UTC || 500 V (was 1000 V)<br />
|-<br />
| 2016-Jan-15 01:41:44 UTC || 200 V (was 500 V)<br />
|-<br />
| 2016-Jan-15 23:40:25 UTC || 500 V (was 200 V)<br />
|-<br />
| post 2016 anneal || 0V<br />
|-<br />
| 2016-Mar-01 12:37:00 UTC || 3480 V<br />
|-<br />
| 2017-May-15 17:50:10 UTC || 2000 V (was 3400 V)<br />
|-<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_3Detector 32017-08-23T18:39:30Z<p>Jmctiernan: </p>
<hr />
<div>This page contains information about changes/issues for RHESSI detector 3 after the 2014 anneal. Detector updates from 2012-mid 2014 can be found here: [[Detector 3 anneal 2012]]<br />
<br />
===Post 2014 Anneal===<br />
<br />
Detector 3 is SEGMENTED following the 2014 anneal (yay!)<br />
<br />
* 2014-Aug-26: D3 is suffering a lot from the known light leak problem. This does not affect the quality of the data but greatly reduces livetime at times when light leaks in through the cryostat port. To alleviate this problem, the G3 rear fast threshold was raised from 0x45 to 0x50 at 2014-238-19:22:56 UTC. This didn't seem to fix the problem.<br />
<br />
* Another threshold change b/c of light leak:<br />
14-241-18:34:11 /IDPUTABLE3 REARFASTDAC ;Load address 0x25CC <br />
14-241-18:34:31 /IDPULOAD VALUE=0x60 ;Rear fast from ox50 to 0x60<br />
<br />
* Front Fast threshold increase due to light leak. This lowered fast counts and increased livetime<br />
2015-152-16:58:07 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
2015-152-16:58:16 /IDPLOAD VALUE=0x30 ; was 0x22<br />
<br />
* The front fast threshold was increased on July 10 2015 due to low livetime due to high fast rates. This action was effective in raising the livetime.<br />
2015-191-19:20:47 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
2015-191-19:20:58 /IDPLOAD VALUE=0x40 ; was 0x30<br />
<br />
* On Aug 20, 2015 the front fast threshold was raised in order to lower fast rates and free up livetime. This was successful: Livetime rose from ~50% to >90%.<br />
15-232-22:16:08 start idib_chg_thrshld (3, FRONT, FAST, 0x50)<br />
15-232-22:16:30 /IDPUDUMPTABL TABLE=DIBTBL3<br />
15-232-22:16:30 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
15-232-22:16:41 /IDPLOAD VALUE=0x50<br />
<br />
* By Aug 24, 2015 rear livetime was so low that the detector had entered "reverse mode" where fast rates are not fully shown, and so fast threshold changes give the opposite effect to that you might expect. (Light leak shows up as livetime peaks, not valleys, in this mode.) The rear fast threshold was raised in two jumps. The first raise apparently increased fast rates and worsened livetime (due to this "reverse mode") but the second raise was successful in bringing down the fast rates and restoring livetime to ~64%.<br />
2015-236-20:45:42 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
2015-236-20:45:54 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
2015-237-00:03:38 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
2015-237-00:03:48 /IDPLOAD VALUE=0x90 ; was 0x80<br />
<br />
* The front slow count rates were elevated, to try to bring them down we raised the slow front threshold by 0x10 on August 27th. This has an immediate effect lowering the slow front counts by a factor of 2. We also raised the front and rear fast threshold to increase the livetime.<br />
<br />
2015-239-17:57:41 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
2015-239-17:57:50 /IDPLOAD VALUE=0x1C ; was 0x0C<br />
<br />
2015-239-19:33:13 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
2015-239-19:33:23 /IDPLOAD VALUE=0xA0 ; was 0x90<br />
<br />
2015-239-21:13:25 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
2015-239-21:13:33 /IDPLOAD VALUE=0x60 ; was 0x50<br />
<br />
*On Sept 14 2015, we raised the rear fast threshold on D3 from 0xA0 to 0xB0, to arrest a live-time decrease. Live time jumped fro 10 to 70%, but was bak to 40% in two days.<br />
<br />
2015-257-17:33:14 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
2015-257-17:33:22 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
* Some threshold changes occurred during the tohban week of Sept 15-22.<br />
<br />
* On Sept 23, it was decided that the last changes to the slow threshold were probably too drastic, especially considering that the fast threshold was changed at the same time. We backed the front slow threshold back down to 0x1C, which is what it had been before the last adjustment. This needs to be monitored to see how D3 operates in this state, and keep an eye on the slow rates + SSR. UPDATE Sept. 24: the D3 event rate did not significantly change with this threshold drop. Livetime is still ~90% (same as before the drop) so I think this is a stable, working condition. If more livetime is desired, the fast threshold could be raised again.<br />
<br />
2015-266-19:24:00 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
2015-266-19:24:12 /IDPLOAD VALUE=0x1C ;was 0x80<br />
<br />
* 2nd October 2015: We returned detector G3 Front Slow threshold to the nominal value of 0x0C (was 0x1C). When we did this, the front slow valids jumped from ~1680 cps to ~3800 cps. We left it this way, over the weekend, but keept a close eye on it.<br />
<br />
15-276-01:48:22 start idib_chg_thrshld(3, FRONT, SLOW, 0x0C) ; was 0x1C<br />
15-276-01:48:26 /IDPUDUMPTABL TABLE=DIBTBL3<br />
15-276-01:48:26 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
15-276-01:48:37 /IDPLOAD VALUE=0x0C<br />
<br />
* 5th October 2015: We increased the front slow thresholds, on detectors G3 and G6. <br />
<br />
15-278-21:28:51 start idib_chg_thrshld(3, FRONT, SLOW, 0x15) ; was 0x0C<br />
15-278-21:28:55 /IDPUDUMPTABL TABLE=DIBTBL3<br />
15-278-21:28:55 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
15-278-21:29:13 /IDPLOAD VALUE=0x15<br />
<br />
* On October 7, Detector 3's front fast threshold was increased from 0x80 to 0xD0 at 280-22:13:38 UTC. This was due to high fast rates and low livetime in that detector. This worked, increasing D3 front LT to ~85%.<br />
<br />
2015-280-22:13:30 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
2015-280-22:13:38 /IDPLOAD VALUE=0xD0 ; was 0x80<br />
<br />
* On October 8 and 9, the rear fast threshold was raised to try and raise livetime. This threshold is now maxed out, but it wasn't enough to lower the fast rates enough to get appreciable LT back. The rear segment is at essentially zero livetime, so it's not really functional.<br />
<br />
2015-281-21:56:47 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
2015-281-21:57:12 /IDPLOAD VALUE=0xE0 ; was 0xD0<br />
<br />
2015-282-19:56:09 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
2015-282-19:56:18 /IDPLOAD VALUE=0xF0 ; was 0xE0<br />
<br />
2015-282-23:02:27 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
2015-282-23:02:35 /IDPLOAD VALUE=0xFF ; was 0xF0<br />
<br />
* On October 28 in an attempt to lower the high reset rates and the front slow counts registered the HV on the detector was changed to ~3799.<br />
<br />
2015-301-20:28:06 /ihvdac detector=3, voltage=196<br />
<br />
* On November 8 and 9 the front fast threshold was raised to 0xE0 and then 0xF0, with each increase live time was raised to 70%, only to drop dramatically.<br />
<br />
2015-312-06:17:30 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
2015-312-06:17:43 /IDPLOAD VALUE=0xE0 ; was 0xD0<br />
<br />
2015-313-19:25:25 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
2015-313-19:25:33 /IDPLOAD VALUE=0xF0 ; was 0xE0<br />
<br />
* November 14, HV dropped to 3044V<br />
<br />
2015-318-07:01:15 /ihvdac detector=3, voltage=157<br />
<br />
* November 15, front fast threshold raised...<br />
<br />
2015-319-04:59:14 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
2015-319-04:59:22 /IDPLOAD VALUE=0xFF ; was 0xF0<br />
<br />
* November 22, HV dropped by 800 V due to a rapid decrease of the livetime<br />
<br />
2015-326-03:44:34 /ihvdac detector=3, voltage=117 ; (2254V)<br />
<br />
* November 25, Front slow threshold raised to 0x30<br />
<br />
2015-329-21:24:25 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
2015-329-21:24:36 /IDPLOAD VALUE=0x30 ; was 0x15<br />
<br />
* November 29, Multiple HV decreases and a front slow threshold raise to 0xC0:<br />
<br />
2015-334-22:24:52 /ihvdac detector=3, voltage=107<br />
2015-334-22:25:51 /ihvdac detector=3, voltage=97<br />
2015-334-22:26:32 /ihvdac detector=3, voltage=87<br />
2015-334-22:27:21 /ihvdac detector=3, voltage=77 (1470 V)<br />
<br />
2015-334-22:28:41 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
2015-334-22:28:50 /IDPLOAD VALUE=0xC0 ; was 0x50<br />
<br />
* December 1, 2015, HV decrease of 200 V<br />
<br />
2015-335-23:39:53 /ihvdac detector=3, voltage=67 ; (1274.5 V)<br />
<br />
* 2015 December 10, power-cycling: D3's HV was ramped to 0.0 v and the Detector Interface Board #3 was powered off for one orbit. The detector segmented once a few tens of volts were applied. We ramped it back up to 1000 V by the end of the pass. The front livetime returned to ~78%, about the same as before the power cycle. If this power-cycling improved the detector status, we wanted to lower front slow threshold from 0xC0 to 0xB0 in order to better support GRIPS (0xC0 is 35 keV). However, D3 spectrum showed no change after this power-cycling. So, no threshold change was made.<br />
<br />
2015-344-16:42:42 /IHVDAC DETECTOR=3, VOLTAGE=0 (0 V)<br />
2015-344-16:44:30 start idib_single_off(3)<br />
<br />
2015-344-18:18:23 start idib_single_on(3)<br />
2015-344-18:18:50 /ihvdac detector=3, voltage=10 (173 V)<br />
2015-344-18:19:46 /ihvdac detector=3, voltage=53 (1000 V)<br />
<br />
* On 28 December 2015, detector 3 events were turned off; too much noise<br />
<br />
2015-362-06:05:36 /itmoff value=dib3 ; Turn off event collection for G3<br />
2015-362-06:05:42 start sc_tbl_loadpkt ("T15357SLTN61_No_G3_G4_G9.00") ; New RTS 26 so G3 events will stay off<br />
<br />
===Post 2016 Anneal===<br />
<br />
Detector 3 is SEGMENTED following the 2016 anneal<br />
<br />
* 2016-05-24 Threshold changes due to light leak<br />
16-145-16:16:43 start idib_chg_thrshld(3, FRONT, FAST, 0x30) <br />
16-145-16:16:47 /IDPUDUMPTABL TABLE=DIBTBL3<br />
16-145-16:16:47 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
16-145-16:16:56 /IDPULOAD VALUE=0x30<br />
<br />
16-145-16:17:19 start idib_chg_thrshld(3, REAR, FAST, 0x80)<br />
16-145-16:17:23 /IDPUDUMPTABL TABLE=DIBTBL3<br />
16-145-16:17:23 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
16-145-16:17:29 /IDPULOAD VALUE=0x80<br />
<br />
*Threshold changes due to noise from increased temperatures<br />
16-228-19:35:20 start idib_chg_thrshld (3, FRONT, FAST, 0x38)<br />
16-228-19:35:24 /IDPUDUMPTABL TABLE=DIBTBL3 <br />
16-228-19:35:24 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
16-228-19:35:37 /IDPULOAD VALUE=0x38<br />
<br />
16-228-22:50:35 start idib_chg_thrshld(3, FRONT, FAST, 0x40)<br />
16-228-22:50:39 /IDPUDUMPTABL TABLE=DIBTBL3<br />
16-228-22:50:39 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
16-228-22:50:53 /IDPULOAD VALUE=0x40<br />
<br />
9-October-2016: Threshold changes due to noise from increased temperatures<br />
16-283-19:41:46 start idib_chg_thrshld(3, FRONT, SLOW, 0x30)<br />
16-283-19:41:49 /IDPUDUMPTABL TABLE=DIBTBL3<br />
16-283-19:41:50 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
16-283-19:42:01 /IDPULOAD VALUE=0x30<br />
<br />
16-283-19:42:24 start idib_chg_thrshld(3, FRONT, FAST, 0x60)<br />
16-283-19:42:28 /IDPUDUMPTABL TABLE=DIBTBL3<br />
16-283-19:42:28 /IDPUTABLE3 OFFSET=FRONTFASTDAC<br />
16-283-19:42:37 /IDPULOAD VALUE=0x60<br />
<br />
16-283-19:42:57 start idib_chg_thrshld(3, REAR, FAST, 0xA0)<br />
16-283-19:43:01 /IDPUDUMPTABL TABLE=DIBTBL3<br />
16-283-19:43:01 /IDPUTABLE3 OFFSET=REARFASTDAC<br />
16-283-19:43:13 /IDPULOAD VALUE=0xA0<br />
<br />
10-October-2016: Reverted Front Slow threshold changes, not much effect on live time<br />
16-284-22:32:57 start idib_chg_thrshld(3, FRONT, SLOW, 0x0C)<br />
16-284-22:33:01 /IDPUDUMPTABL TABLE=DIBTBL3<br />
16-284-22:33:01 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
16-284-22:33:14 /IDPULOAD VALUE=0x0C<br />
<br />
11-October-2016: Lowered HV to 3000 V for better front and rear livetimes<br />
16-285-18:47:41 /ihvdac detector=3, voltage=0x9A<br />
<br />
12-December-2016: Raised Rear Fast threshold for better front livetimes<br />
16-347-16:52:42 /IDPULOAD VALUE=0xC0 ; was 0xB0<br />
16-347-16:56:14 /IDPULOAD VALUE=0xD0 ; was 0xC0<br />
<br />
16-Aug-2017: Raised Front slow threshold for reduced low energy noise<br />
17-228-19:54:09 start idib_chg_thrshld(3,FRONT,SLOW,0x1C)<br />
17-228-19:54:12 /IDPUDUMPTABL TABLE=DIBTBL3<br />
17-228-19:54:12 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
17-228-19:54:22 /IDPULOAD VALUE=0x1C<br />
<br />
===D3 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C<br />
|- <br />
| 2015-08-27 17:57:50 UTC || 0x1C (was 0x0C)<br />
|- <br />
| 2015-09-17 06:35:17 UTC || 0x80 (was 0x1C)<br />
|- <br />
| 2015-09-23 19:24:12 UTC || 0x1C (was 0x80)<br />
|- <br />
| 2015-10-03 01:48:22 UTC || 0x0C (was 0x1C)<br />
|-<br />
| 2015-10-05 21:28:51 UTC || 0x15 (was 0x0C)<br />
|-<br />
| 2015-11-25 21:24:36 UTC || 0x30 (was 0x15)<br />
|-<br />
| 2015-11-29 22:28:50 UTC || 0xC0 (was 0x50)<br />
|- <br />
| post 2016 anneal || 0x0C<br />
|-<br />
| 2016-10-09 19:42:01 || 0x30 (Was 0x0C)<br />
|-<br />
| 2016-10-10 22:33:14 || 0x0C (Was 0x30)<br />
|-<br />
| 2017-08-07 20:59:20 || 0x30 (Was 0x15) ?!?! (Ops agrees with this...)<br />
|-<br />
| 2017-08-07 21:00:39 || 0x15 (Was 0x30)<br />
|-<br />
| 2017-08-16 19:54:22 || 0x1C (Was 0x15)<br />
|}<br />
<br />
===D3 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22<br />
|-<br />
| 2015-06-03 16:58:16 UTC || 0x30 (was 0x22)<br />
|- <br />
| 2015-07-09 19:20:58 UTC || 0x40 (was 0x30)<br />
|- <br />
| 2015-08-20 22:16:41 UTC || 0x50 (was 0x40)<br />
|- <br />
| 2015-08-27 21:13:33 UTC || 0x60 (was 0x50)<br />
|- <br />
| 2015-09-17 06:36:45 UTC || 0x70 (was 0x60)<br />
|- <br />
| 2015-09-22 19:47:12 UTC || 0x80 (was 0x70)<br />
|- <br />
| 2015-10-07 22:13:38 UTC || 0xD0 (was 0x80)<br />
|-<br />
| 2015-11-08 06:17:43 UTC || 0xE0 (was 0xD0)<br />
|-<br />
| 2015-11-09 19:25:33 UTC || 0xF0 (was 0xE0)<br />
|-<br />
| 2015-11-15 04:59:22 UTC || 0xFF (was 0xF0)<br />
|-<br />
| post 2016 anneal || 0x22<br />
|-<br />
| 2016-05-24 16:16:43 UTC|| 0x30 (was 0x22)<br />
|-<br />
| 2016-08-15 19:35:37 UTC|| 0x38 (was 0x30)<br />
|-<br />
| 2016-08-15 22:50:35 UTC|| 0x40 (was 0x38)<br />
|-<br />
| 2016-10-09 19:42:37 UTC|| 0x60 (was 0x40)<br />
|-<br />
| 2016-12-17 23:13:54 UTC|| 0xA0 (was 0x80)<br />
|-<br />
| 2016-12-18 17:48:48 UTC|| 0xB0 (was 0xA0)<br />
|-<br />
| 2017-05-09 19:08:19 UTC|| 0xD0 (was 0xB0)<br />
|-<br />
| 2017-08-07 19:19:40 UTC|| 0xFF (was 0xD0)<br />
|-<br />
| 2017-08-07 19:20:44 UTC|| 0xD0 (was 0xFF)<br />
|}<br />
<br />
===D3 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30<br />
|-<br />
| post 2016 anneal || 0x30<br />
|-<br />
|}<br />
<br />
===D3 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45<br />
|- <br />
| 2014-08-26 19:22:56 UTC || 0x50 (was 0x45)<br />
|- <br />
| 2014-08-29 18:33:28 UTC || 0x60 (was 0x50)<br />
|- <br />
| 2015-08-24 20:45:54 UTC || 0x80 (was 0x70)<br />
|- <br />
| 2015-08-25 00:03:48 UTC || 0x90 (was 0x80)<br />
|- <br />
| 2015-08-27 19:33:23 UTC || 0xA0 (was 0x90)<br />
|- <br />
| 2015-09-14 17:33:22 UTC || 0xB0 (was 0xA0)<br />
|- <br />
| 2015-09-17 06:37:06 UTC || 0xC0 (was 0xB0)<br />
|- <br />
| 2015-09-21 20:09:44 UTC || 0xD0 (was 0xC0)<br />
|- <br />
| 2015-10-08 21:57:12 UTC || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-10-08 19:56:18 UTC || 0xF0 (was 0xE0)<br />
|- <br />
| 2015-10-08 23:02:35 UTC || 0xFF (was 0xF0)<br />
|-<br />
| post 2016 anneal || 0x60<br />
|- <br />
| 2016-05-24 16:17:19 UTC || 0x80 (was 0x70)<br />
|- <br />
| 2016-10-09 19:43:13 UTC || 0xA0 (was 0x80)<br />
|- <br />
| 2016-11-28 21:45:29 UTC || 0xB0 (was 0xA0)<br />
|- <br />
| 2016-12-12 16:52:42 UTC || 0xC0 (was 0xB0)<br />
|- <br />
| 2016-12-12 16:56:14 UTC || 0xD0 (was 0xC0)<br />
|- <br />
| 16-12-16 18:41:50 UTC || 0xE0<br />
|- <br />
| 16-12-16 20:20:55 UTC || 0x70 (blooper)<br />
|- <br />
| 16-12-16 23:39:13 UTC || 0xE0 (blooper corrected)<br />
|- <br />
| 2016-12-20 21:47:55 UTC || 0xFF (was 0xE0)<br />
|}<br />
<br />
===D3 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 3995 V<br />
|-<br />
| 2015-10-28 20:28:06 UTC || 3799 V (was 3995 V)<br />
|-<br />
| 2015-11-14 07:01:15 UTC || 3044 V (was 3799 V)<br />
|-<br />
| 2015-11-22 03:44:34 UTC || 2255 V (was 3044 V)<br />
|-<br />
| 2015-11-29 22:27:21 UTC || 1470 V (was 2255 V)<br />
|-<br />
| 2015-12-01 23:39:53 UTC || 1274 V (was 1470 V)<br />
|-<br />
| 2015-12-17 18:45:22 UTC || 500 V<br />
|- <br />
| post 2016 anneal || 3995 V<br />
|-<br />
| 2016-10-11 18:47:41 || 2990 V (was 3995 V)<br />
|-<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Detector_1Detector 12017-08-23T18:28:08Z<p>Jmctiernan: </p>
<hr />
<div>This page contains information about changes/issues for RHESSI detector 1 after the 2014 anneal. Detector 1 updates from 2012-mid 2014 can be found here: [[Detector 1 anneal 2012]]<br />
<br />
=== Post 2014 Anneal ===<br />
<br />
Detector 1 is SEGMENTED following the 2014 anneal (yay!)<br />
<br />
* The rear fast threshold was changed on July 13 2015 due to dropping livetime in the rear:<br />
2015-194-16:33:58 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-194-16:34:12 /IDPLOAD VALUE=0x50 ; was 0x45<br />
<br />
* The rear fast threshold was changed on July 24 2015 due to low livetime. However, the change probably wasn't needed; the tohban hadn't noticed that a change had already been made a few days ago. The next tohban can reverse the change if desired.<br />
2015-205-17:18:59 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-205-17:19:08 /IDPLOAD VALUE=0x70 ; was 0x60<br />
<br />
* The rear fast threshold was changed on Sep 9 2015 due to low livetime.<br />
2015-252-17:51:10 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-252-17:51:17 /IDPLOAD VALUE=0x80 ; was 0x70<br />
<br />
* On October 8, 9, and 12, the rear fast threshold was raised three times to try and raise livetime. Results still need to be assessed.<br />
<br />
2015-281-21:50:13 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-281-21:50:24 /IDPLOAD VALUE=0xA0 ; was 0x90<br />
<br />
2015-282-19:55:48 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-282-19:55:58 /IDPLOAD VALUE=0xB0 ; was 0xA0<br />
<br />
2015-285-21:51:28 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-285-21:51:37 /IDPLOAD VALUE=0xC0 ; was 0xB0<br />
<br />
* Also on October 12, the front fast threshold on D1 (and also D7) was raised. This is to try and top off the livetime used in the attenuator logic. It might not work, since the fast rates are not terribly high for this detector, in which case the change could be reversed by a future tohban. Check this and see..<br />
<br />
2015-285-20:16:55 /IDPUTABLE1 OFFSET=FRONTFASTDAC<br />
2015-285-20:17:03 /IDPLOAD VALUE=0x50 ; was 0x40<br />
<br />
* On November 6, 7, 8. the rear fast threshold was raised three times to try and raise livetime. At 0xFF the live time is at 70%<br />
<br />
2015-312-06:16:29 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-312-06:16:52 /IDPLOAD VALUE=0xE0 ; was 0xD0<br />
<br />
2015-313-19:22:53 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-313-19:23:03 /IDPLOAD VALUE=0xF0 ; was 0xE0<br />
<br />
2015-314-18:55:49 /IDPUTABLE1 OFFSET=REARFASTDAC<br />
2015-314-18:56:05 /IDPLOAD VALUE=0xFF ; was 0xFF<br />
<br />
* 2015 December 14 lowered HV by 200 V in an attempt to reduce D1 rear, fast rates<br />
<br />
2015-348-18:19:00 /IHVDAC DETECTOR=1, VOLTAGE=176 ; 34-6.8 V<br />
<br />
* 2015 December 28 lowered HV by 200 V in an attempt to reduce D1 dead time<br />
<br />
2015-362-09:13:58 /ihvdac detector=1, voltage=166 ; Lowered G1 HV by 200V<br />
<br />
* 2016 January 13 lowered HV to 2500 V<br />
<br />
2016-013-21:20:47 /IHVDAC DETECTOR=1, VOLTAGE=129 ; 2500 V<br />
<br />
* 2016 January 27 lowered HV to 1500 V<br />
<br />
2016-027-20:16:13 /IHVDAC DETECTOR=1, VOLTAGE=77 ; 1500V from 2000V<br />
<br />
=== Post 2016 Anneal ===<br />
<br />
* March 18, 2016 - Turned off D1<br />
2016-139-18:53:32 /ihvdac detector=1, voltage=0<br />
2016-139-18:56:49 /idibpwroff value=1<br />
<br />
* 2016 April 27 (DOY 118): Started turning on D1. HV reached 3995 V by April 29, ~03:40<br />
<br />
16-119-00:49:49 start ihv_ramp_stage1_g1_g4_g7 (HV = 0x0A, ~200 V)<br />
16-119-02:27:48 start ihv_ramp_stage2_g1_g4_g7 (HV = 0x33, 980 V)<br />
16-119-04:08:00 start ihv_ramp_stage3_g1_g4_g7 (HV = 0x67, 1985 V)<br />
16-120-00:22:16 start ihv_ramp_stage4_g1_g4_g7 (HV = 0x9A, ~3000 V)<br />
16-120-02:01:36 start ihv_ramp_stage5_g1_g4_g7 (HV = 0xB3, ~3500 V)<br />
16-120-03:41:12 start ihv_ramp_stage6_g1_g4_g7 (HV = 0xCE, 3995 V)<br />
<br />
* 2016 June 27-28: Turned on D1 again. The final HV is 4000 V. The front and rear counts looked good. D1's front live time was around 98.6 % and the rear<br />
live time was about 97.8 % The last commanding was at DOY180-20:54 UTC. <br />
<br />
* 2016 July 4: D1 turned off to reduce temperature load.<br />
<br />
<br />
* 2017 January 26: D1 turned off.<br />
<br />
2017-026-16:00:18 /ihvdac detector=1, voltage=0 ; detector 1 off<br />
<br />
* 2017 April 3: Turned on in response to high solar activity. HV was raised to ~1000V at 16:25 and then up to ~2000V at 19:45 UT.<br />
<br />
* 2017 April 17: Events turned on in response to high solar activity. Adjustment of Front Fast and Rear Fast thresholds.<br />
<br />
2017-107-21:32:05 start ihv_ramp_stage2_g1 ; 1000 V<br />
17-107-23:09:42 start ihv_ramp_stage3_g1<br />
17-108-00:43:46 start idib_chg_thrshld(1, FRONT, FAST, 0x80)<br />
17-108-00:45:22 start idib_chg_thrshld(1, REAR, FAST, 0x60)<br />
<br />
* 2017 April 25: Front fast threshold increase, raised live time form 2% to 61%<br />
<br />
2017-115-22:28:46 /IDPUTABLE1 OFFSET=FRONTFASTDAC<br />
2017-115-22:28:56 /IDPULOAD VALUE=0x90 ; was 0x80<br />
<br />
* 2017 August 16: Front slow threshold increase, to cut low energy noise<br />
<br />
17-228-19:58:55 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:58:58 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:58 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:59:07 /IDPULOAD VALUE=0x15<br />
<br />
<br />
<br />
===D1 front slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x0C<br />
|-<br />
| post 2016 anneal || 0x0c<br />
|-<br />
| 2017-Aug-16 || 0x15<br />
|}<br />
<br />
===D1 front fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x22<br />
|-<br />
| 2015-May-12 21:01:12 || 0x30 (was 0x22)<br />
|-<br />
| 2015-May-12 21:10:35 || 0x40 (was 0x30)<br />
|- <br />
| 2015-Oct-12 20:17:03 || 0x50 (was 0x40)<br />
|- <br />
| post 2016 anneal || 0x22<br />
|-<br />
| 2017-Apr-18 00:43:46 || 0x80 <br />
|-<br />
| 2017-Apr-25 22:28:56 || 0x90 (was 0x80)<br />
|-<br />
| 2017-May-09 19:06:57 || 0xE0 (was 0xA0)<br />
|}<br />
<br />
===D1 rear slow LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x30<br />
|-<br />
| post 2016 anneal || 0x30<br />
|}<br />
<br />
===D1 rear fast LLD threshold history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 0x45<br />
|-<br />
| 2015-Jul-13 16:34:12 || 0x50 (was 0x45)<br />
|- <br />
| 2015-Jul-24 17:19:08 || 0x70 (was 0x60)<br />
|- <br />
| 2015-Sep-9 17:51:17 || 0x80 (was 0x70)<br />
|- <br />
| 2015-Sep-17 06:36:06 || 0x90 (was 0x80)<br />
|- <br />
| 2015-Oct-08 21:50:24 || 0xA0 (was 0x90)<br />
|- <br />
| 2015-Nov-06 06:16:52 || 0xE0 (was 0xD0)<br />
|- <br />
| 2015-Nov-07 19:23:03 || 0xF0 (was 0xE0)<br />
|- <br />
| 2015-Nov-08 18:56:05 || 0xFF (was 0xF0)<br />
|- <br />
| ?? || 0x50<br />
|-<br />
| 2017-Apr-18 00:45:22 || 0x60 (was 0x50)<br />
|-<br />
| 2017-May-09 20:43:44 || 0x90 (was 0x60)<br />
|}<br />
<br />
===D1 HV history===<br />
{| class="wikitable" <br />
|- <br />
| post 2014 anneal || 3995 V<br />
|- <br />
| 2015-Dec-14 18:19:00 UTC || 3407V<br />
|- <br />
| 2015-Dec-28 09:13:00 UTC || 3210V<br />
|-<br />
| 2016-Jan-13 21:20:47 UTC || 2500V<br />
|-<br />
| 2016-Jan-27 20:16:13 UTC || 1500V<br />
|-<br />
| post 2016 anneal || 3995 V<br />
|-<br />
| 2016-Jul-04 || 0V<br />
|-<br />
| 2017-Jan-26 || 0V<br />
|-<br />
| 2017-Apr-3 || 2000 V<br />
|-<br />
| 2017-Apr-11 || 0 V<br />
|-<br />
| 2017-Apr-18 || 2000 V<br />
|-<br />
| 2017-Jul-05 || 1500 V<br />
|}</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-08-23Tohban Report 2017-08-232017-08-23T18:21:24Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 16 August 2017<br />
|end_date = 22 August 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Some moderate activity, including an M flare, which RHESSI missed, except for the decay.<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 45 21 1 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 20 17 1 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 10 8 0 0<br />
<br />
There were RHESSI flares/GOES flares 129 / 67<br />
over the time range 15-Aug-17 22-Aug-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level currently at 25%<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 129.4 and 127.5 K as of 21-aug-2017. The cold plates, 1 and 2 are 156.9 and 155.4 K. <br />
Cryocooler power is steady at 74.1W, cryocooler efficiencies are 0.0277 and 0.0281. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 15-aug-2017 to 23-aug-2017<br />
TIME RANGE: 2017-08-15T00:00:00.000 -- 2017-08-23T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
2017-08-20T18:45:00.000 -- 2017-08-20T18:50:00.000 300.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T03:30:00.000 -- 2017-08-17T03:35:00.000 300.00000<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 6<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T06:55:00.000 -- 2017-08-17T07:00:00.000 300.00000<br />
2017-08-17T12:00:00.000 -- 2017-08-17T16:35:00.000 16500.000<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
2017-08-18T18:55:00.000 -- 2017-08-18T19:00:00.000 300.00000<br />
2017-08-18T23:30:00.000 -- 2017-08-19T04:20:00.000 17400.000<br />
2017-08-22T14:10:00.000 -- 2017-08-23T00:00:00.000 35400.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. A<br />
number of front slow threshold increases were performed on<br />
16-Aug-2017, resulting in the front thresholds for detectors 1, 3, 6,<br />
8 being set to, 0x15, 0x1C, 0x1C, and 0x20, respectively:<br />
<br />
17-228-19:53:33 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:53:36 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:53:37 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:53:47 /IDPULOAD VALUE=0x15<br />
<br />
17-228-19:54:09 start idib_chg_thrshld(3,FRONT,SLOW,0x1C)<br />
17-228-19:54:12 /IDPUDUMPTABL TABLE=DIBTBL3<br />
17-228-19:54:12 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
17-228-19:54:22 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:54:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:54:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:54:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:54:51 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:55:15 start idib_chg_thrshld(8,FRONT,SLOW,0x20)<br />
17-228-19:55:19 /IDPUDUMPTABL TABLE=DIBTBL8<br />
17-228-19:55:19 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
17-228-19:55:26 /IDPULOAD VALUE=0x20<br />
<br />
17-228-19:56:29 start idib_chg_thrshld(6,FRONT,SLOW,0x20)<br />
17-228-19:56:33 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:56:33 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:56:40 /IDPULOAD VALUE=0x20<br />
<br />
17-228-19:57:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:57:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:57:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:57:48 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:58:04 start idib_chg_thrshld(1,FRONT,SLOW,0x1C)<br />
17-228-19:58:08 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:08 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:58:15 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:58:55 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:58:58 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:58 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:59:07 /IDPULOAD VALUE=0x15<br />
<br />
== Notes ==<br />
<br />
On 2017-08-17, 18, commands were loaded to adjust the ADP settings for the 21-Aug-2017 eclipse:<br />
<br />
Regular BGS pass at 22:40:00<br />
16 17-229-22:41:50 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-229-22:42:02 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-229-22:42:16 STOL_ECHO: Interactive: /IADPPTEW value=20<br />
16 17-229-22:45:15 STOL_ECHO: Interactive: start imgr_bgs_85572_as<br />
17 17-229-22:45:15 STOL_MSG: Opened imgr_bgs_85572_as in /home/hessiops/itos_override/procs/imgr_bgs_85572_as.proc<br />
16 17-229-22:46:11 STOL_ECHO: Interactive: goto 60<br />
16 17-229-22:46:26 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-229-22:46:29 STOL_ECHO: Interactive: /IADPPTEW value=21<br />
16 17-229-22:46:33 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-229-22:46:37 STOL_ECHO: Interactive: /IADPPTEW value=28 ; ran out of time<br />
<br />
Blind Acq at AGO_13M at 00:42:00<br />
16 17-230-00:44:57 STOL_ECHO: Interactive: start blind_ac_fwd<br />
16 17-230-00:45:48 STOL_ECHO: Interactive: start imgr_adpstop ; checking values<br />
16 17-230-00:45:59 STOL_ECHO: Interactive: /IADPPTER value=21<br />
16 17-230-00:46:04 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:46:18 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:46:31 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-230-00:46:36 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:46:44 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:46:59 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-230-00:47:04 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:47:20 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:47:47 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-230-00:47:51 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:48:00 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:48:18 STOL_ECHO: Interactive: /IADPPTEW value=28<br />
16 17-230-00:48:22 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:49:01 STOL_ECHO: FIFO: start sc_ssr_record halted<br />
17 17-230-00:49:01 STOL_MSG: proc sc_ssr_record halted; Initially halted<br />
16 17-230-00:49:01 STOL_ECHO: sc_ssr_record line 1: PROC SC_SSR_RECORD<br />
17 17-230-00:49:08 STOL_MSG: ASK assigning "223370074" to local variable offsetval ; setting the write pointer<br />
16 17-230-00:49:19 STOL_ECHO: Interactive: start blind_ac_end<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || See Notes above<br />
|-<br />
| Ref. deadtime for Att.thresholds || 24.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-08-23Tohban Report 2017-08-232017-08-23T17:55:28Z<p>Jmctiernan: </p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 16 August 2017<br />
|end_date = 22 August 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Some moderate activity, including an M flare, which RHESSI missed, except for the decay.<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 45 21 1 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 20 17 1 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 10 8 0 0<br />
<br />
There were RHESSI flares/GOES flares 129 / 67<br />
over the time range 15-Aug-17 22-Aug-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level currently at 25%<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 129.4 and 127.5 K as of 21-aug-2017. The cold plates, 1 and 2 are 156.9 and 155.4 K. <br />
Cryocooler power is steady at 74.1W, cryocooler efficiencies are 0.0277 and 0.0281. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 15-aug-2017 to 23-aug-2017<br />
TIME RANGE: 2017-08-15T00:00:00.000 -- 2017-08-23T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
2017-08-20T18:45:00.000 -- 2017-08-20T18:50:00.000 300.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T03:30:00.000 -- 2017-08-17T03:35:00.000 300.00000<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 6<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T06:55:00.000 -- 2017-08-17T07:00:00.000 300.00000<br />
2017-08-17T12:00:00.000 -- 2017-08-17T16:35:00.000 16500.000<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
2017-08-18T18:55:00.000 -- 2017-08-18T19:00:00.000 300.00000<br />
2017-08-18T23:30:00.000 -- 2017-08-19T04:20:00.000 17400.000<br />
2017-08-22T14:10:00.000 -- 2017-08-23T00:00:00.000 35400.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. A<br />
number of front slow threshold increases were performed on<br />
16-Aug-2017, resulting in the front thresholds for detectors 1, 3, 6,<br />
8 being set to, 0x15, 0x1C, 0x1C, and 0x20, respectively:<br />
<br />
17-228-19:53:33 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:53:36 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:53:37 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:53:47 /IDPULOAD VALUE=0x15<br />
<br />
17-228-19:54:09 start idib_chg_thrshld(3,FRONT,SLOW,0x1C)<br />
17-228-19:54:12 /IDPUDUMPTABL TABLE=DIBTBL3<br />
17-228-19:54:12 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
17-228-19:54:22 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:54:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:54:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:54:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:54:51 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:55:15 start idib_chg_thrshld(8,FRONT,SLOW,0x20)<br />
17-228-19:55:19 /IDPUDUMPTABL TABLE=DIBTBL8<br />
17-228-19:55:19 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
17-228-19:55:26 /IDPULOAD VALUE=0x20<br />
<br />
17-228-19:56:29 start idib_chg_thrshld(6,FRONT,SLOW,0x20)<br />
17-228-19:56:33 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:56:33 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:56:40 /IDPULOAD VALUE=0x20<br />
<br />
17-228-19:57:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:57:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:57:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:57:48 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:58:04 start idib_chg_thrshld(1,FRONT,SLOW,0x1C)<br />
17-228-19:58:08 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:08 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:58:15 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:58:55 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:58:58 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:58 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:59:07 /IDPULOAD VALUE=0x15<br />
<br />
== Notes ==<br />
<br />
On 2017-08-17, 18, commands were loaded to adjust the ADP settings for the 21-Aug-2017 eclipse:<br />
<br />
Regular BGS pass at 22:40:00<br />
16 17-229-22:41:50 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-229-22:42:02 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-229-22:42:16 STOL_ECHO: Interactive: /IADPPTEW value=20<br />
16 17-229-22:45:15 STOL_ECHO: Interactive: start imgr_bgs_85572_as<br />
17 17-229-22:45:15 STOL_MSG: Opened imgr_bgs_85572_as in /home/hessiops/itos_override/procs/imgr_bgs_85572_as.proc<br />
16 17-229-22:46:11 STOL_ECHO: Interactive: goto 60<br />
16 17-229-22:46:26 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-229-22:46:29 STOL_ECHO: Interactive: /IADPPTEW value=21<br />
16 17-229-22:46:33 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-229-22:46:37 STOL_ECHO: Interactive: /IADPPTEW value=28 ; ran out of time<br />
<br />
Blind Acq at AGO_13M at 00:42:00<br />
16 17-230-00:44:57 STOL_ECHO: Interactive: start blind_ac_fwd<br />
16 17-230-00:45:48 STOL_ECHO: Interactive: start imgr_adpstop ; checking values<br />
16 17-230-00:45:59 STOL_ECHO: Interactive: /IADPPTER value=21<br />
16 17-230-00:46:04 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:46:18 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:46:31 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-230-00:46:36 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:46:44 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:46:59 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-230-00:47:04 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:47:20 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:47:47 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-230-00:47:51 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:48:00 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:48:18 STOL_ECHO: Interactive: /IADPPTEW value=28<br />
16 17-230-00:48:22 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:49:01 STOL_ECHO: FIFO: start sc_ssr_record halted<br />
17 17-230-00:49:01 STOL_MSG: proc sc_ssr_record halted; Initially halted<br />
16 17-230-00:49:01 STOL_ECHO: sc_ssr_record line 1: PROC SC_SSR_RECORD<br />
17 17-230-00:49:08 STOL_MSG: ASK assigning "223370074" to local variable offsetval ; setting the write pointer<br />
16 17-230-00:49:19 STOL_ECHO: Interactive: start blind_ac_end<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || See Notes above<br />
|-<br />
| Ref. deadtime for Att.thresholds || 24.x%<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernanhttps://sprg.ssl.berkeley.edu/~tohban/wiki/index.php/Tohban_Report_2017-08-23Tohban Report 2017-08-232017-08-23T17:53:44Z<p>Jmctiernan: Created page with "{{Infobox Tohban Report| |start_date = 16 August 2017 |end_date = 22 August 2017 |tohban_name = Jim McTiernan |tohban_email = jimm@ssl.berkeley.edu |next_tohban = TBD }} == Sol..."</p>
<hr />
<div>{{Infobox Tohban Report|<br />
|start_date = 16 August 2017<br />
|end_date = 22 August 2017<br />
|tohban_name = Jim McTiernan<br />
|tohban_email = jimm@ssl.berkeley.edu<br />
|next_tohban = TBD<br />
}}<br />
<br />
== Solar Activity ==<br />
<br />
Some moderate activity, including an M flare, which RHESSI missed, except for the decay.<br />
<br />
How many GOES flares occurred?<br />
Flares above B, C, M, X class were 45 21 1 0<br />
And how many of these are listed in the RHESSI flare list?<br />
Flares above B, C, M, X class were 20 17 1 0<br />
And how many had EXCELLENT coverage?<br />
Flares above B, C, M, X class were 10 8 0 0<br />
<br />
There were RHESSI flares/GOES flares 129 / 67<br />
over the time range 15-Aug-17 22-Aug-17<br />
<br />
== Memory Management ==<br />
<br />
Decimation was active/vigorous for the full time period, with the SSR level currently at 25%<br />
<br />
== Spacecraft Status ==<br />
<br />
Detectors 1, 3, 6, and 8 are recording events. The cold tips are 129.4 and 127.5 K as of 21-aug-2017. The cold plates, 1 and 2 are 156.9 and 155.4 K. <br />
Cryocooler power is steady at 74.1W, cryocooler efficiencies are 0.0277 and 0.0281. See:<br />
<br />
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf<br />
<br />
for a summary plot of recent temperatures, efficiencies and accelerometer values.<br />
<br />
== Data Gaps ==<br />
<br />
DATA GAPS FOR 15-aug-2017 to 23-aug-2017<br />
TIME RANGE: 2017-08-15T00:00:00.000 -- 2017-08-23T00:00:00.000<br />
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
2017-08-20T18:45:00.000 -- 2017-08-20T18:50:00.000 300.00000<br />
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4<br />
N_GAPS 2<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T03:30:00.000 -- 2017-08-17T03:35:00.000 300.00000<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30<br />
N_GAPS 6<br />
GAP START TIME GAP END TIME GAP (SEC)<br />
2017-08-17T06:55:00.000 -- 2017-08-17T07:00:00.000 300.00000<br />
2017-08-17T12:00:00.000 -- 2017-08-17T16:35:00.000 16500.000<br />
2017-08-17T22:45:00.000 -- 2017-08-18T00:50:00.000 7500.0000<br />
2017-08-18T18:55:00.000 -- 2017-08-18T19:00:00.000 300.00000<br />
2017-08-18T23:30:00.000 -- 2017-08-19T04:20:00.000 17400.000<br />
2017-08-22T14:10:00.000 -- 2017-08-23T00:00:00.000 35400.000<br />
<br />
== Detector issues ==<br />
<br />
Detectors 1, 3, 6, and 8 are powered on, and are recording events. A<br />
number of front slow threshold increases were performed on<br />
16-Aug-2017, resulting in the front thresholds for detectors 1, 3, 6,<br />
8 being set to, 0x15, 0x1C, 0x1C, and 0x20, respectively:<br />
<br />
17-228-19:53:33 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:53:36 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:53:37 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:53:47 /IDPULOAD VALUE=0x15<br />
<br />
17-228-19:54:09 start idib_chg_thrshld(3,FRONT,SLOW,0x1C)<br />
17-228-19:54:12 /IDPUDUMPTABL TABLE=DIBTBL3<br />
17-228-19:54:12 /IDPUTABLE3 OFFSET=FRONTSLOWDAC<br />
17-228-19:54:22 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:54:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:54:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:54:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:54:51 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:55:15 start idib_chg_thrshld(8,FRONT,SLOW,0x20)<br />
17-228-19:55:19 /IDPUDUMPTABL TABLE=DIBTBL8<br />
17-228-19:55:19 /IDPUTABLE8 OFFSET=FRONTSLOWDAC<br />
17-228-19:55:26 /IDPULOAD VALUE=0x20<br />
<br />
17-228-19:56:29 start idib_chg_thrshld(6,FRONT,SLOW,0x20)<br />
17-228-19:56:33 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:56:33 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:56:40 /IDPULOAD VALUE=0x20<br />
<br />
17-228-19:57:37 start idib_chg_thrshld(6,FRONT,SLOW,0x1C)<br />
17-228-19:57:41 /IDPUDUMPTABL TABLE=DIBTBL6<br />
17-228-19:57:41 /IDPUTABLE6 OFFSET=FRONTSLOWDAC<br />
17-228-19:57:48 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:58:04 start idib_chg_thrshld(1,FRONT,SLOW,0x1C)<br />
17-228-19:58:08 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:08 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:58:15 /IDPULOAD VALUE=0x1C<br />
<br />
17-228-19:58:55 start idib_chg_thrshld(1,FRONT,SLOW,0x15)<br />
17-228-19:58:58 /IDPUDUMPTABL TABLE=DIBTBL1<br />
17-228-19:58:58 /IDPUTABLE1 OFFSET=FRONTSLOWDAC<br />
17-228-19:59:07 /IDPULOAD VALUE=0x15<br />
<br />
== Notes ==<br />
<br />
On 2017-08-17, 18, commands were loaded to adjust the ADP settings for the 21-Aug-2017 eclipse:<br />
<br />
Regular BGS pass at 22:40:00<br />
16 17-229-22:41:50 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-229-22:42:02 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-229-22:42:16 STOL_ECHO: Interactive: /IADPPTEW value=20<br />
16 17-229-22:45:15 STOL_ECHO: Interactive: start imgr_bgs_85572_as<br />
17 17-229-22:45:15 STOL_MSG: Opened imgr_bgs_85572_as in /home/hessiops/itos_override/procs/imgr_bgs_85572_as.proc<br />
16 17-229-22:46:11 STOL_ECHO: Interactive: goto 60<br />
16 17-229-22:46:26 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-229-22:46:29 STOL_ECHO: Interactive: /IADPPTEW value=21<br />
16 17-229-22:46:33 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-229-22:46:37 STOL_ECHO: Interactive: /IADPPTEW value=28 ; ran out of time<br />
<br />
Blind Acq at AGO_13M at 00:42:00<br />
16 17-230-00:44:57 STOL_ECHO: Interactive: start blind_ac_fwd<br />
16 17-230-00:45:48 STOL_ECHO: Interactive: start imgr_adpstop ; checking values<br />
16 17-230-00:45:59 STOL_ECHO: Interactive: /IADPPTER value=21<br />
16 17-230-00:46:04 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:46:18 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:46:31 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-230-00:46:36 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:46:44 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:46:59 STOL_ECHO: Interactive: /IADPPTER value=28<br />
16 17-230-00:47:04 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:47:20 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:47:47 STOL_ECHO: Interactive: /IADPPTER value=20<br />
16 17-230-00:47:51 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:48:00 STOL_ECHO: Interactive: start imgr_adpstop<br />
16 17-230-00:48:18 STOL_ECHO: Interactive: /IADPPTEW value=28<br />
16 17-230-00:48:22 STOL_ECHO: Interactive: /IADPRUN<br />
16 17-230-00:49:01 STOL_ECHO: FIFO: start sc_ssr_record halted<br />
17 17-230-00:49:01 STOL_MSG: proc sc_ssr_record halted; Initially halted<br />
16 17-230-00:49:01 STOL_ECHO: sc_ssr_record line 1: PROC SC_SSR_RECORD<br />
17 17-230-00:49:08 STOL_MSG: ASK assigning "223370074" to local variable offsetval ; setting the write pointer<br />
16 17-230-00:49:19 STOL_ECHO: Interactive: start blind_ac_end<br />
<br />
== Spacecraft Management ==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Decimation || Active/Vigorous<br />
|-<br />
| HLAT Decimation || Rear decimation<br />
|-<br />
| Night time data (fronts) || plus/minus 4 minutes from daylight<br />
|-<br />
| Night time data (rears) || plus/minus 4 minutes from daylight<br />
|-<br />
| Require extra passes? || No<br />
|-<br />
| Requirement for moving pointer? || No<br />
|-<br />
| Attenuator operation || See Notes above<br />
|-<br />
| Detector problems? || See above<br />
|}<br />
<br />
<br />
[[Category:Tohban Report]]<br />
[[Category:Tohban]]</div>Jmctiernan