Tohban Report 2015-07-01
From RHESSI Wiki
| Tohban Reports | |
|---|---|
| Start Date: | 24 Jun 2015 |
| End Date: | 01 Jul 2015 |
| Tohban: | Milo Buitrago-Casas |
| Tohban email: | milo@ssl.berkeley.edu |
| Next Tohban: | ?? |
| List all reports | |
Contents |
Solar Activity
This was a fairly active week, with AR 12371 near disk center producing many C and M class flares. Other regions near the west limb also produced flares; we should have some good occulted events coming up this week. There is still a Major Flare Watch in effect.
Memory Management
The max SSR fill was 46%. Despite the continued replaying of some data we missed last week and the high solar activity, there were no problems with the SSR this week.
Spacecraft Status
Normal as far as the Tohban can tell.
Data Gaps
In the first half of the week there continued to be many short data gaps in the SOH and PMTRAS data, as well as an occasional one in the monitor rates, including the strangest set of gaps ever seen to this tohban: [1] That gap set occurred at the tail end of the problem in getting data through due to stale TLEs / high solar activity (=more spacecraft drag). Ops has continued to work on resolutions to these problems, which only occur during perfect storms of high solar activity and particularly bad TLEs.
Detector issues
No threshold changes this week.
D8 and D9 front livetime are low, but they have been for awhile and there have been no negative trends recently. There are no memory problems.
It was noticed that the D9 front slow threshold is high. Does it need to be this high?
Attenuator management
Afternoon update: Last Wednesday (6/24) we increased the threshold used to put the thin attenuator IN (A0 to A1). We went from a value of 5.1 % to 10 % This change took effect 2015-175-22:12:56 UTC.
Spacecraft Management
Spin-up
We're still in Active/Vigorous decimation, and still taking events at night.
| Decimation | Active/Vigorous |
| Night time data (fronts) | Taking night events |
| Night time data (rears) | Taking night events |
| Require extra passes? | No |
| Requirement for moving pointer? | Some replaying |
| Attenuator operation | Still trying to optimize motions. |
