Tohban Report 2017-08-02

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Tohban Reports
Start Date: 26 July 2017
End Date: 2 August 2017
Tohban: Mitsuo Oka
Tohban email: moka@ssl.berkeley.edu
Next Tohban: Pascal
List all reports



Contents

Solar Activity

The sun was still very quiet this week. However, a new active region appears from the east limb, producing many B-class flares in the last 48 hours. With this new active region, we expect a slightly higher activity level next week.

TIME RANGE:26-Jul-17 00:00:00.000 -- 02-Aug-17 00:00:00.000

Flares above B, C, M, X class were 17 1 0 0

How many GOES flares occurred?

 Flares above B, C, M, X class were     17     1     0     0

And how many of these are listed in the RHESSI flare list?

 Flares above B, C, M, X class were      7     0     0     0

And how many had EXCELLENT coverage?

 Flares above B, C, M, X class were      5     0     0     0

There were RHESSI flares/GOES flares 12 / 18

Memory Management

Decimation was active/vigorous for the full time period, with the SSR level currently at around 20 - 30%.

Spacecraft Status

Detectors 1, 3, 6, and 8 are recording events. The temperatures are about 130K and 128K for cold tips 1 and 2, respectively, as of July 26. The cold plates 1 and 2 are at about 156K and 155K. Cryocooler power is steady at ~75W, for recent tmperatures, cryocooler efficiencies, and accelerometer values see:

http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf


Data Gaps

None known.

Detector issues

Detectors 1, 3, 6, and 8 are powered on, and are recording events. No detector operations this week.

Det. 1R reset are currently at about 50000.

Notes

On Auguest 1, a breaker failed in the Silver building at SSL, causing a major network outage. MOC was mostly unaffected because its equipment are in the Addition building. The network recovered on August 3.

Spacecraft Management

Decimation Active/Vigorous
HLAT Decimation Rear decimation
Night time data (fronts) plus/minus 4 minutes from daylight
Night time data (rears) plus/minus 4 minutes from daylight
Require extra passes? No
Requirement for moving pointer? No
Attenuator operation See Notes above
Ref. deadtime for Att.thresholds 17.1%
Detector problems? See above
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