Tohban Report 2017-01-11
| Tohban Reports | |
|---|---|
| Start Date: | 4 January 2016 |
| End Date: | 11 January 2017 |
| Tohban: | Pascal Saint-Hilaire |
| Tohban email: | pascal@ssl.berkeley.edu |
| Next Tohban: | Jim |
| List all reports | |
Solar Activity
Very quiet this week, except for a few flares in the high Bs in the past day or so.
How many GOES flares occurred?
Flares above B, C, M, X class were 2 0 0 0
RHESSI flare list contains 0 over the time range 03-Jan-17 10-Jan-17
No overlapping RHESSI flares to count, sorry
Memory Management
Decimation was changed to Normal/Vigorous (from quiet/vigorous) last Wednesday. :
2017-004-21:38:11 start idpu_dec_normal_vigorous
The SSR has been hovering near the 20% level at the end of pass sets, and is set to be much lower than that at the end of today's set. It was peaking at ~35% at beginning of the pass set, meaning that there was a bit of decimation going on some of the time.
Detectors 3 and 9 are recording events during spacecraft day, and for 4 minutes prior to and after daylight.
Spacecraft Status
Detectors 3 and 9 are recording events.
Cryocooler power has been turned dow to ~75 W:
2017-004-21:34:14 start icryomain_ramp(75)
Acceleration have decreased a bit (as expected, now at ~11 mg). And cold tips temps have gone down!?! By about 3 degrees. (Cold plates by about 2 degrees).
To avoid pesky shutter motions due to the ever-increasing detector 3f deadtime (which currently controls attenuator motions). The attenuator logic has been disabled:
2017-004-21:37:35 /idpudisarm ale ; logic disabled 2017-004-21:37:46 /iattmove move=out1 ;thick out 2017-004-21:37:56 /iattmove move=out2 ;thin out
...and both attenuators are locked out. We need to be mindful of this when solar activity picks up.
Data Gaps
Besides the usual occasional 300 s gap in VC1-SOH data, not much:
DATA GAPS FOR 2017/01/07 TIME RANGE: 2017-01-07T00:00:00.000 -- 2017-01-08T00:00:00.000 NO GAPS IN APP_ID = 1 (VC1-SOH) NO GAPS IN APP_ID = 154 (VC1-PMTRAS) GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30 N_GAPS 1 GAP START TIME GAP END TIME GAP (SEC) 2017-01-07T01:25:00.000 -- 2017-01-07T01:30:00.000 300.00000
Detector issues
Detectors 3 and 9 are powered on, and are recording events. No threshold or HV changes during the week.
D3f and D9f livetimes are ~85% and ~80%, while D3r and D9r are ~85% and ~82%.
Notes
Spacecraft Management
| Decimation | Normal/Vigorous |
| HLAT Decimation | Rear decimation |
| Night time data (fronts) | full-time |
| Night time data (rears) | full-time |
| Require extra passes? | No |
| Requirement for moving pointer? | No |
| Attenuator operation | Both locked out. |
| Detector problems? | No. |