Tohban Report 2015-08-05
| Tohban Reports | |
|---|---|
| Start Date: | 29 Jul 2015 |
| End Date: | 5 Aug 2015 |
| Tohban: | Juan C. Martinez Oliveros |
| Tohban email: | oliveros@ssl.berkeley.edu |
| Next Tohban: | Martin Fivian |
| List all reports | |
Solar Activity
Solar activity was very low this week. There are currently 6 ARs on the disk with the probability of some isolated C class flare in the following days.
How many GOES flares occurred?
Flares above B, C, M, X class were 15 1 0 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 10 0 0 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 7 0 0 0
There were RHESSI flares/GOES flares 53 / 16 over the time range 29-Jul-15 05-Aug-15
Memory Management
The SSR fill level reached a maximum of ~27% and a minimum of about ~0% during the week.
Spacecraft Status
The cold plate 1 and 2 are at about 129.7 K and 128.2 K respectively.
Data Gaps
No data gaps this week
Detector issues
Detector 9 shows a low front livetime, to mitigate this a fast front threshold was made and a HV commanding, changing the threshold from 0x50 to 0x60 and decreasing the detector voltage by 20 steps, sitting now at 2230.4. As a result no significant change in the livetime was observed, the change was ~10-15 percent and is currently at ~46%.
2015-212-21:41:47 /IDPUTABLE9 OFFSET=FRONTFASTDAC 2015-212-21:42:36 /IDPLOAD VALUE=0x60 : was 0x50
2015-215-20:32:17 /IHVDAC DETECTOR=9, VOLTAGE=116 ; decrease by 20 counts
Detector 8 fast threshold was also change to increase its livetime, first from 0x30 to 0x40, and later from 0x40 to 0x50.
2015-212-21:41:18 /IDPUTABLE8 OFFSET=FRONTFASTDAC 2015-212-21:41:31 /IDPLOAD VALUE=0x40 : was 0x30
2015-215-20:31:46 /IDPUTABLE8 OFFSET=FRONTFASTDAC 2015-215-20:31:56 /IDPLOAD VALUE=0x50 ; was 0x40
Detector 4 and 6 shows elevated front slow and reset rates, but relatively low front fast rates.
Other notes
Spacecraft Management
| Decimation | Normal/Vigorous |
| Night time data (fronts) | +- 4 minutes |
| Night time data (rears) | +- 4 minutes |
| Require extra passes? | No |
| Requirement for moving pointer? | No |
| Attenuator operation | Normal |