Tohban Report 2014-01-08
| Tohban Reports | |
|---|---|
| Start Date: | 02 Jan 2014 |
| End Date: | 08 Jan 2014 |
| Tohban: | Mitsuo Oka |
| Tohban email: | moka@ssl.berkeley.edu |
| Next Tohban: | TBD |
| List all reports | |
Solar Activity
Solar activity was relatively high this week, with one X-class flare and 11 M-class flares. AR 1944 produced many of these flares. It is still located near the disk center and is expected to produce more flares during the next few days. There are currently 8 ARs on the disk. STEREO B shows no significantly bright spots that would rotate onto the disk soon.
How many GOES flares occurred?
Flares above B, C, M, X class were 0 39 11 1
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 0 15 8 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 0 6 2 0
There were RHESSI flares/GOES flares 231 / 51 over the time range '01-Jan-14', '08-Jan-14 16:00'
Memory Management
The SSR was not emptying by the end of the daily pass set. It is currently 10.58%.
Spacecraft Status
The cold plate 1 and 2 are at about 119 K and 117 K, respectively.
Data Gaps
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
GAP START TIME GAP END TIME GAP (SEC) 2014-01-02T22:10:00.000 -- 2014-01-03T00:00:00.000 6600.0000 2014-01-03T00:00:00.000 -- 2014-01-03T01:20:00.000 4800.0000
Detector issues
On Jan 3, Hugh Hudson noticed that the attenuator system has been in state 3. It turned out that, in Detector 6 (both front and rear), livetime was decreasing rapidly and preamp-reset and FAST LLD were also rapidly increasing. D6 was immediately removed from the attenuator calculation (replaced with D9). Then, over the next few days, several changes were made to D6 high voltage and FAST threshold (both front and rear) as described in the Detector Update page.
Other notes
There was an isolated spike in monitor rates and summary count rates at DOY 002 (Jan 2) 18:40 UT. http://sprg.ssl.berkeley.edu/~tohban/browser/?show=grth1+qlpcr+qlpr+monfs+monfl+monfu+monfr+monff+monrs+monrl+monru+monrr+monrf&date=20140102&time=184123
Spacecraft Management
No operations this week
| Decimation | Normal/Vigorous |
| HLAT Decimation | Rear decimation weight 6, no front decimation |
| Night time data (fronts) | Enabled, during entire eclipse |
| Night time data (rears) | Enabled, during entire eclipse |
| Require extra passes? | No? |
| Requirement for moving pointer? | No |
| Attenuator operation | Normal |
| Detector problems? | None |