Tohban Report 2013-02-06

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Tohban Reports
Start Date: 30 Jan 2013
End Date: 6 Feb 2013
Tohban: Hazel Bain
Tohban email:
Next Tohban: Lindsay Glesener
List all reports


Solar Activity

Solar activity was low this week. There are currently 5 active regions on disk. Activity is expected to remain low-moderate with a chance for an C class flares in the coming days.

How many GOES flares occurred?

 Flares above B, C, M, X class were     16    13     0     0

And how many of these are listed in the RHESSI flare list?

 Flares above B, C, M, X class were     10     6     0     0

And how many had EXCELLENT coverage?

 Flares above B, C, M, X class were      8     2     0     0

There were RHESSI flares/GOES flares 161 / 29 over the time range 30-Jan-13 06-Feb-13

Memory Management

The SSR was emptying at the end of the daily passes during the beginning of the week. Max of around ~25%

Spacecraft Status

The cold plate 1 and 2 are at 108.5 K and 107.1 K respectively.

Data Gaps

Detector issues

On January 30 at 00:26:07 UT the high voltage of detector 2 was raised by five steps (216 -> 221). The voltage increase went smoothly, but still no segmentation. There was a very brief increase in noise, then the detector settled back to the levels we were seeing before the voltage increase.

On February 5 at 22:04:13 UT the detector 2 high voltage was raised by another five steps (221 -> 226). This increase puts G2 at 4411 V, which is now the highest voltage of all our detectors. After increasing the voltage, there was no indication of segmentation. There was also no appreciable increase in count rates or reset rates. Detector 2 still looked good on the next orbit.

Other notes

Spacecraft Management

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
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