Tohban Report 2013-02-27
| Tohban Reports | |
|---|---|
| Start Date: | 20 Feb 2013 |
| End Date: | 27 Feb 2013 |
| Tohban: | Hazel Bain |
| Tohban email: | hbain@ssl.berkeley.edu |
| Next Tohban: | Lindsay Glesener |
| List all reports | |
Solar Activity
Solar activity was low-moderate this week with only 10 C class flares. There are currently 7 active regions on the disk, although 4 of these will rotate over the limb within the next 36 hours. STEREO B shows a couple of active regions which will rotate onto the disk over the next few days.
How many GOES flares occurred?
Flares above B, C, M, X class were 20 10 0 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 14 5 0 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 5 3 0 0
There were RHESSI flares/GOES flares 206 / 30 over the time range 20-Feb-13 27-Feb-13
Memory Management
The SSR is emptying at the end of the daily pass set, with a maximum of about 25%.
Cold plate 1 and 2 temperatures are at 111 K and 110 K respectively.
The cryocooler is nominal.
Spacecraft Status
Data Gaps
There were no data gaps this week.
Detector issues
The front slow threshold on detector 2 was lowered on days 052 and 053 (21st and 22nd February).
The front slow valid counts were around 1200 at 0x38, a little higher than the typical ~800 seen during previous orbits. However during recent passes the counts are around ~600. The variation may be caused by orbital variation or as a result of the pass occurring while the light leak in detector 2 is present. The new tohban will keep an eye on this and will observe the situation for another week.
Note we started at 0x50 on day 052.
2013-052-18:00:24 /IDPULOAD VALUE=0x4C
2013-052-18:02:13 /IDPULOAD VALUE=0x48
2013-052-18:06:15 /IDPULOAD VALUE=0x44
2013-053-16:10:30 /IDPULOAD VALUE=0x40
2013-053-16:11:20 /IDPULOAD VALUE=0x3C
2013-053-16:12:52 /IDPULOAD VALUE=0x38
2013-053-17:51:28 /IDPULOAD VALUE=0x34
2013-053-17:52:53 /IDPULOAD VALUE=0x36
2013-053-17:56:19 /IDPULOAD VALUE=0x38
The detector remains unsegmented.
Other notes
A spin up was carried out on the 26th February between ~17:00 UT and ~20:00UT.
| 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 problems. The front slow threshold on detector 2 was lowered (see above). |