Tohban Report 2013-04-24
| Tohban Reports | |
|---|---|
| Start Date: | 17 Apr 2013 |
| End Date: | 24 Apr 2013 |
| Tohban: | Juan Carlos Martinez Oliveros |
| Tohban email: | oliveros@ssl.berkeley.edu |
| Next Tohban: | Mitsuo Oka |
| List all reports | |
Solar Activity
Solar activity this week was moderate in activty. A Major Flare Watch was called for AR 11726 as the active region is developing and retains its beta-gamma-delta configuration. There are currently 6 active regions on the disk. The most active being 11726 which has produced a several C class flares in the last 48 hours and one M1.0 on April 22.
How many GOES flares occurred?
Flares above B, C, M, X class were 19 42 1 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 14 27 0 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 7 13 0 0
There were RHESSI flares/GOES flares 407 / 62 over the time range 17-Apr-13 24-Apr-13
Memory Management
The SSR was mostly emptying at the end of the daily passes during the beginning of the week.
Spacecraft Status
The cold plate 1 and 2 are at 114 K and 112 K respectively. Spint rate is a 14.6 rpm
Data Gaps
There was no data gaps this week.
Detector issues
Detector 9 didn't show any dropouts this week. Jeremy followed the issue trying to find a correlation between spacecraft systems and the dropouts, however he didn't find any correlation.
Other notes
Brian reported an overall increase in temperature and cryocooler power. Also, an increase in cryocooler accelerometer amplitude is seen with a decrease in cryocooler efficiency. A rebalancing of the cryocooler was proposed as a measure to lower the power consumption and the overall increase trend in temperature. The most likely cause for this effect is contamination.
Spacecraft Management
| Decimation | Normal/vigorous |
| HLAT Decimation | Rear decimation weight 6, no front decimation |
| Night time data (fronts) | +/- 4 minutes |
| Night time data (rears) | Taking data at nights |
| Require extra passes? | No |
| Requirement for moving pointer? | No |
| Attenuator operation | Normal |
| Detector problems? | No |