Tohban Report 2017-11-22
| Tohban Reports | |
|---|---|
| Start Date: | 15 Nov 2017 |
| End Date: | 22 Nov 2017 |
| Tohban: | Mitsuo Oka |
| Tohban email: | moka@ssl.berkeley.edu |
| Next Tohban: | Jim McTiernan |
| List all reports | |
Solar Activity
Solar activity this week was very low. There is only one active region on disk. Solar activity is expected to continue at low levels.
How many GOES flares occurred?
Flares above B, C, M, X class were 5 0 0 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 2 0 0 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 1 0 0 0
There were RHESSI flares/GOES flares 2 / 5 over the time range 14-Nov-17 21-Nov-17
Memory Management
The SSR level has been toggling around 25%. It reached a minimum of ~5% and the maximum of ~35%.
Spacecraft Status
Detectors 1, 3, 6 and 8 are active and taking data.
The cold plate 1 and 2 temperatures are ~157.2K and 155.3K. The shadow length will reach its relative minimum on Nov. 25.
Currently the Cryocooler power is ~75 W and the acceleration is at ~11mg.
Data Gaps
TIME RANGE: 2017-11-14T00:00:00.000 -- 2017-11-15T00:00:00.000 GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
GAP START TIME GAP END TIME GAP (SEC) 2017-11-14T00:50:00.000 -- 2017-11-14T09:30:00.000 31200.000 2017-11-14T19:35:00.000 -- 2017-11-14T21:05:00.000 5400.0000
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
GAP START TIME GAP END TIME GAP (SEC) 2017-11-14T00:50:00.000 -- 2017-11-14T09:30:00.000 31200.000 2017-11-14T19:35:00.000 -- 2017-11-14T21:00:00.000 5100.0000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
GAP START TIME GAP END TIME GAP (SEC) 2017-11-14T02:20:00.000 -- 2017-11-14T06:35:00.000 15300.000
Detector issues
The attenuator thresholds were increased to account for a background deadtime of 26% deadtime on G3 (at 2017-319-22:05 UTC). The thresholds are as follows:
%deadtime attnuator state 0.00 Min A0 30.98 Max A0 <--Thin in 27.45 Min A1 <--Thin out 32.94 Max A1 <--Thick in 26.67 Min A2 40.78 Max A2 28.24 Min A3 <--Thick out 100.00 Max A3
Other notes
A software issue with D6 spectrograms was fixed and the data are now being reprocessed.
Spacecraft Management
| Decimation | Active/Vigorous |
| HLAT Decimation | Rear decimation |
| Night time data (fronts) | plus/minus 4 minutes from daylight |
| Night time data (rears) | plus/minus 4 minutes from daylight |
| Require extra passes? | No |
| Requirement for moving pointer? | No |
| Attenuator operation | logic enabled |
| Detector problems? | See notes above. |