Tohban Report 2017-08-02
| Tohban Reports | |
|---|---|
| Start Date: | 26 July 2017 |
| End Date: | 2 August 2017 |
| Tohban: | Mitsuo Oka |
| Tohban email: | moka@ssl.berkeley.edu |
| Next Tohban: | Pascal |
| List all reports | |
Solar Activity
The sun was still very quiet this week. However, a new active region appears from the east limb, producing many B-class flares in the last 48 hours. With this new active region, we expect a slightly higher activity level next week.
TIME RANGE:26-Jul-17 00:00:00.000 -- 02-Aug-17 00:00:00.000
Flares above B, C, M, X class were 17 1 0 0
How many GOES flares occurred?
Flares above B, C, M, X class were 17 1 0 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 7 0 0 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 5 0 0 0
There were RHESSI flares/GOES flares 12 / 18
Memory Management
Decimation was active/vigorous for the full time period, with the SSR level currently at around 20 - 30%.
Spacecraft Status
Detectors 1, 3, 6, and 8 are recording events. The temperatures are about 130K and 128K for cold tips 1 and 2, respectively, as of July 26. The cold plates 1 and 2 are at about 156K and 155K. Cryocooler power is steady at ~75W, for recent tmperatures, cryocooler efficiencies, and accelerometer values see:
http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf
Data Gaps
None known.
Detector issues
Detectors 1, 3, 6, and 8 are powered on, and are recording events. No detector operations this week.
Det. 1R reset are currently at about 50000.
Notes
On Auguest 1, a breaker failed in the Silver building at SSL, causing a major network outage. MOC was mostly unaffected because its equipment are in the Addition building. The network recovered on August 3.
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 | See Notes above |
| Ref. deadtime for Att.thresholds | 17.1% |
| Detector problems? | See above |