Tohban Report 2015-06-03
From RHESSI Wiki
| Tohban Reports | |
|---|---|
| Start Date: | 27 May 2015 |
| End Date: | 3 June 2015 |
| Tohban: | Nicole Duncan |
| Tohban email: | nicoleduncan@ssl.berkeley.edu |
| Next Tohban: | |
| List all reports | |
Contents |
Solar Activity
Solar Activity was even lower this week, with most of the flux at baseline levels. There have only been 2-C flares in the past 2 days, one of which was over the NE limb which could indicate an increase of activity in the coming days. But otherwise, the forecast is to remain quiet over the next week.
How many GOES flares occurred?
Flares above B, C, M, X class were 10 1 0 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 6 1 0 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 3 0 0 0
There were RHESSI flares/GOES flares 61 / 11 over the time range 26-May-15 02-Jun-15
Memory Management
SSR has been emptying by the end of the pass set
Spacecraft Status
Nominal
Data Gaps
No data gaps this week
Detector issues
Rear Fast counts:
- Continue to be elevated on many detectors this week. Action was taken on D3 front and D4 front to bring down the rear fast counts, and this improved livetime. D1R & D7R continue to have fast counts in the 10,000 range. The next Tohban should keep an eye on it and if livetime decreases much more, consider taking action.
2015-152-16:58:07 /IDPUTABLE3 OFFSET=FRONTFASTDAC 2015-152-16:58:16 /IDPLOAD VALUE=0x30 ; was 0x22
2015-152-17:00:18 /IDPUTABLE4 OFFSET=FRONTFASTDAC 2015-152-17:00:31 /IDPLOAD VALUE=0x60 ; was 0x50
Light Leak:
- Detector 2 continues to have a decreased livetime and elevated fast and slow counts due to the light leak. We tried raising the front slow threshold to quell the issue, but no appreciable change came of it. The front (and rear) fast counts are only high during the light leak itself and do not have an elevated baseline, so no action was taken. But the next Tohban might try raising the front fast threshold to see if this can alleviate some of the issue.
- Detectors 3 and 5 continue to see the effects of the light leak as well. These manifest as rear fast counts, and not slow counts because of these detectors are segmented and there is no coincident signal from the front segment to set-off a slow triggered event.
2015-152-17:01:00 /IDPUTABLE2 OFFSET=FRONTSLOWDAC 2015-152-17:01:16 /IDPLOAD VALUE=0x70 ; was 0x58
Spacecraft Management
We turned on events in the rear segment during eclipse. Front segment counts continue during the usual +/- 4 minutes.
Temperatures
Cold Tip Temperature 1 109.6 K Cold Tip Temperature 2 107.8 K Cold Plate Temperature 1 132.1 K Cold Plate Temperature 2 130.6 K
Other notes
| Decimation | Normal/Vigorous |
| Night time data (fronts) | No nighttime events |
| Night time data (rears) | Taking night events |
| Require extra passes? | No |
| Requirement for moving pointer? | No |
| Attenuator operation | Normal |
