Tohban Report 2015-12-16
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== Detector issues == | == Detector issues == | ||
- | + | ===D1=== | |
- | + | ||
- | + | Enhanced fast rates (and reduced livetime) in the rear segment. Because rear-fast threshold is already at 0xFF, we tried lowering HV. | |
- | Dec | + | |
+ | Dec 14, 18:19, lowered HV from 3600 to 3400 V. | ||
- | D4 | + | ===D2=== |
- | + | ||
- | + | Dec 09, 23:42, raised front fast threshold from 0x70 to 0xFF | |
+ | |||
+ | ===D3=== | ||
+ | |||
+ | Dec 10, 16:42-18:19, power-cycling | ||
+ | |||
+ | ===D4=== | ||
+ | |||
+ | Dec 10, 21:38, lowered HV from 1500 V to 1000 V | ||
+ | |||
+ | Dec 12, 00:33, events turned on for 3.5 min | ||
D6 | D6 |
Revision as of 19:00, 15 December 2015
Tohban Reports | |
---|---|
Start Date: | 9 Dec 2015 |
End Date: | 16 Dec 2015 |
Tohban: | Mitsuo Oka |
Tohban email: | moka@ssl.berkeley.edu |
Next Tohban: | TBD |
List all reports |
Contents |
Solar Activity
Memory Management
Decimation was active/vigorous for the full time period. Both front and rear detectors are off during SC night, except for 4 minutes on either side. The SSR is not emptying out.
Spacecraft Status
The cold plates, 1 and 2 were at 136.9 and 135.4 K, on 2015-11-30.
Data Gaps
Detector issues
D1
Enhanced fast rates (and reduced livetime) in the rear segment. Because rear-fast threshold is already at 0xFF, we tried lowering HV.
Dec 14, 18:19, lowered HV from 3600 to 3400 V.
D2
Dec 09, 23:42, raised front fast threshold from 0x70 to 0xFF
D3
Dec 10, 16:42-18:19, power-cycling
D4
Dec 10, 21:38, lowered HV from 1500 V to 1000 V
Dec 12, 00:33, events turned on for 3.5 min
D6
Dec 10, 19:58, lowered front slow threshold from 0x40 to 0x30 Dec 12, 00:30, lowered front slow threshold from 0x30 to 0x20
D7
Dec 10, 21:38, lowered front slow threshold from 0x20 to 0x10 Dec 12, 00:33, lowered HV from 3500 to 3300 V Dec 12, 19:20, raised front slow threshold from 0x10 to 0x20
Other notes
Spacecraft Management
Decimation | Active/Vigorous |
HLAT Decimation | Rear decimation weight 6, no front decimation |
Night time data (fronts) | +/- 4 minutes |
Night time data (rears) | +/- 4 minutes |
Require extra passes? | No |
Requirement for moving pointer? | No |
Attenuator operation | Working as expected |
Detector problems? | See notes above. |