Tohban Report 2015-06-03
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Light Leak: | 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. | * 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. | ||
| + | * Keep Detector 2 slow threshold at 0x70 although it did not have an immediately noticeable effect. Next Tohban keep an eye on it. | ||
* Detectors 3 and 5 continue to see the effects of the light leak as well. These are only seen in the Rear Fast counts | * Detectors 3 and 5 continue to see the effects of the light leak as well. These are only seen in the Rear Fast counts | ||
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We turned on events in the rear segment during eclipse. Front segment counts continue during the usual +/- 4 minutes. | We turned on events in the rear segment during eclipse. Front segment counts continue during the usual +/- 4 minutes. | ||
| + | This week turn on night events for the front segment | ||
== Temperatures == | == Temperatures == | ||
Revision as of 18:29, 3 June 2015
| 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 significant data gaps this week.
Detector issues
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 low 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.
- Keep Detector 2 slow threshold at 0x70 although it did not have an immediately noticeable effect. Next Tohban keep an eye on it.
- Detectors 3 and 5 continue to see the effects of the light leak as well. These are only seen in the Rear Fast counts
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.
This week turn on night events for the front segment
Temperatures
These are mostly unchanged from last week. Eclipse will continue to decrease until June 16th, so CPs/CTs should continue to cool over this time period.
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 |
