Tohban Report 2013-02-20
From RHESSI Wiki
(Created page with "{{Infobox Tohban Report| |start_date = 13 Feb 2013 |end_date = 20 Feb 2013 |tohban_name = Mitsuo Oka |tohban_email = moka@ssl.berkeley.edu |next_tohban = TBD }} == Solar Activi...") |
|||
| Line 4: | Line 4: | ||
|tohban_name = Mitsuo Oka | |tohban_name = Mitsuo Oka | ||
|tohban_email = moka@ssl.berkeley.edu | |tohban_email = moka@ssl.berkeley.edu | ||
| - | |next_tohban = | + | |next_tohban = Hazel Bain |
}} | }} | ||
== Solar Activity == | == Solar Activity == | ||
| - | Some activity, with an M-class flare | + | Some activity, with an M-class flare. |
How many GOES flares occurred? | How many GOES flares occurred? | ||
| Line 23: | Line 23: | ||
== Memory Management == | == Memory Management == | ||
| - | No memory issues. The SSR is emptying at the end of the daily pass set, with a maximum of about | + | No memory issues. The SSR is emptying at the end of the daily pass set, with a maximum of about 25%. |
== Spacecraft Status == | == Spacecraft Status == | ||
| - | The spacecraft parameters are nominal. No HV commanding this week but a few commanding to change D2 threshold values (see below). | + | The spacecraft parameters are nominal. No HV commanding this week but a few commanding to change D2 threshold values (see below). We may need a spin-up next week. |
== Data Gaps == | == Data Gaps == | ||
| Line 42: | Line 42: | ||
DOY 045, 20:47 UT, raised from 0x48 to 0x50, a little decrease | DOY 045, 20:47 UT, raised from 0x48 to 0x50, a little decrease | ||
| - | Looking at the count rate plots, the fluctuations we observed at the time of commanding seem to have been natural. | + | Looking at the count rate plots, the fluctuations we observed at the time of commanding seem to have been natural. Energy spectra generated from the detector 2 now show a bump in the 15-25 keV range, but it is not certain whether this is due to the threshold changes. There could have been some effect from light-leak. From next week, we will try lowering the threshold until we really see significant noise. |
Revision as of 21:09, 20 February 2013
| Tohban Reports | |
|---|---|
| Start Date: | 13 Feb 2013 |
| End Date: | 20 Feb 2013 |
| Tohban: | Mitsuo Oka |
| Tohban email: | moka@ssl.berkeley.edu |
| Next Tohban: | Hazel Bain |
| List all reports | |
Contents |
Solar Activity
Some activity, with an M-class flare.
How many GOES flares occurred?
Flares above B, C, M, X class were 17 6 1 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 11 5 1 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 8 4 1 0
There were RHESSI flares/GOES flares 134 / 24 over the time range 12-Feb-13 19-Feb-13
Memory Management
No memory issues. The SSR is emptying at the end of the daily pass set, with a maximum of about 25%.
Spacecraft Status
The spacecraft parameters are nominal. No HV commanding this week but a few commanding to change D2 threshold values (see below). We may need a spin-up next week.
Data Gaps
No gaps in monitor rates.
Detector issues
We lowered the front slow threshold on detector 2, but there was no noticeable change in front segment counts after the changes were made. The detector remains unsegmented.
DOY 044, 22:38 UT, lowered from 0x88 to 0x58, no change in count rates DOY 045, 19:08 UT, lowered from 0x58 to 0x48, gradual increase with fluctuations DOY 045, 20:47 UT, raised from 0x48 to 0x50, a little decrease
Looking at the count rate plots, the fluctuations we observed at the time of commanding seem to have been natural. Energy spectra generated from the detector 2 now show a bump in the 15-25 keV range, but it is not certain whether this is due to the threshold changes. There could have been some effect from light-leak. From next week, we will try lowering the threshold until we really see significant noise.
Other notes
A new page "DIB tables" is added to the Wiki site under the page "Tohban detector updates".
| Decimation | Normal/vigorous |
| HLAT Decimation | Rear decimation weight 6, no front decimation |
| Night time data (fronts) | +/- 4 minutes |
| Night time data (rears) | Taking data at nights |
| Require extra passes? | No |
| Requirement for moving pointer? | No |
| Attenuator operation | Normal |
| Detector problems? | No |
