Tohban Report 2015-04-29
| Tohban Reports | |
|---|---|
| Start Date: | 22 Apr 2015 |
| End Date: | 29 Apr 2015 |
| Tohban: | Nicole Duncan |
| Tohban email: | nicoleduncan@ssl.berkeley.edu |
| Next Tohban: | |
| List all reports | |
Solar Activity
Most of this week's activity occurred early in the week, but it dropped off as the week progressed. Solar activity is currently very low, with a background GOES level of B3. There are currently 4 named regions on disk, with 3 of those set to rotate off disk within a few days. Activity is forecasted to remain quiet since there are no complex regions rotating on disk. Recommend the next tohban considers a change to Normal/Vigorous.
How many GOES flares occurred?
Flares above B, C, M, X class were 4 36 9 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 1 28 7 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 0 13 2 0
There were RHESSI flares/GOES flares 361 / 49 over the time range 21-Apr-15 28-Apr-15
Memory Management
SSR has been emptying at the end of the daily pass set.
Spacecraft Status
Spacecraft operated nominally this week.
Data Gaps
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
GAP START TIME GAP END TIME GAP (SEC)
2015-04-21T06:50:00.000 -- 2015-04-21T06:55:00.000 300.00000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
GAP START TIME GAP END TIME GAP (SEC)
2015-04-21T18:40:00.000 -- 2015-04-21T18:45:00.000 300.00000
2015-04-28T23:00:00.000 -- 2015-04-28T23:05:00.000 300.00000
Temperatures
Cold Tip Temperature 1 = 108.147K Cold Tip Temperature 2 = 106.324K Cold Plate Temperature 1 = 129.203K Cold Plate Temperature 2 = 127.842K
Detector issues
D8 rear fast counts were elevated, with a baseline of 10,000 that would jump to 100,000. This corresponded to a livetime with a baseline of 90% that would drop it to 40% during the times when the fast counts would jump to 100,000. Raising the rear fast threshold (0xA0 --> 0xB0) stabilized the fast counts to 1,000 with a livetime around 97%.
15-114-19:14:10 /IDPUTABLE8 OFFSET=REARFASTDAC 15-114-19:14:20 /IDPLOAD VALUE=0xB0 ; was 0xA0
Other notes
D8 front livetime hovered around 95% this week. Next tohban should keep an eye on it, but no action is recommended at this time.
Spacecraft Management
| Decimation | Active/Vigorous |
| Night time data (fronts) | No nighttime events |
| Night time data (rears) | Taking nighttime events |
| Require extra passes? | No |
| Requirement for moving pointer? | No |
| Attenuator operation | Normal |