Tohban Report 2016-10-19
| Tohban Reports | |
|---|---|
| Start Date: | 12 October 2016 |
| End Date: | 19 October 2016 |
| Tohban: | Mitsuo Oka |
| Tohban email: | moka@ssl.berkeley.edu |
| Next Tohban: | Mitsuo Oka |
| List all reports | |
Solar Activity
The solar activity was low, mostly B-flare activity with several C-flares. There are only two ARs on disk, and we expect to see low activity next week.
How many GOES flares occurred?
Flares above B, C, M, X class were 21 4 0 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 13 4 0 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 7 4 0 0
There were RHESSI flares/GOES flares 87 / 25 over the time range 11-Oct-16 18-Oct-16
Memory Management
The SSR was at 0% at the end of BGS passes.
Spacecraft Status
On Thursday Oct.13, Detector 8 was turned off and Detector 9 was turned on (HV ramped up to ~3000V). Currently, Detectors 3 and 9 are recording events. The cold tips temperature have come down a little partly due to day light changes. They are currently 119.0 and 117.0 K as of 2016-10-19. The cold plates, 1 and 2 are 143.8 and 142.1 K. The battery looks good, well above 26V.
Data Gaps
There were two relatively large data gaps in addition to short (typically 300 s) data gaps.
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4 2016-10-13T14:55:00.000 -- 2016-10-13T15:15:00.000 1200.0000 2016-10-17T12:25:00.000 -- 2016-10-17T18:45:00.000 22800.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30 2016-10-17T12:20:00.000 -- 2016-10-17T18:45:00.000 23100.000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30 2016-10-17T12:20:00.000 -- 2016-10-18T00:00:00.000 42000.000
Detector issues
Detectors 3 and 9 are powered on, and are recording events. On Oct.17 (DOY 291), D9 rear fast threshold was raised from 0x60 to 0x90. In the following passes, it was lowered down to 0x70 and then raised back to 0x80. Currently the livetime is still low, reaching 5%.
2016-291-17:40:26 /IDPULOAD VALUE=0x90 ; was 0x60 2016-291-19:22:08 /IDPULOAD VALUE=0x70 ; was 0x90 2016-291-20:59:57 /IDPULOAD VALUE=0x80 ; was 0x70
Notes
Because there is no marginal difference between Detectors 8 and 9, the team decided to keep Detector 9 for a while.
Spacecraft Management
| Decimation | Normal/Vigorous |
| HLAT Decimation | No decimation |
| Night time data (fronts) | full-time |
| Night time data (rears) | full-time |
| Require extra passes? | No |
| Requirement for moving pointer? | No |
| Attenuator operation | Working as expected |
| Detector problems? | See notes above. |