Tohban Report 2017-05-17

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Tohban Reports
Start Date: 10 May 2017
End Date: 17 May 2017
Tohban: Milo Buitrago-Casas
Tohban email: milo@ssl.berkeley.edu
Next Tohban: TBD
List all reports



Contents

Solar Activity

The Sun was really quiet this week. There were NO GOES flares during the last week. Current solar activity is under level GOES-A8. There are only two pretty small active regions on the East limb with little changes to host a solar flare in the next couple of days.

Memory Management

Decimation was active/vigorous for the full time period. SSR at 28% with 1 pass to go today.

Spacecraft Status

Detectors 1, 3, 6, and 8 are recording events.

Cold Plates temperatures are at 156.5 and 155.1 K. Cold Tips at 130.1 and 128.1 K respectively.

See http://sprg.ssl.berkeley.edu/~ayshih/soh/latest_temperatures.pdf for a summary plot of recent temperatures, efficiencies and accelerometer values.

Data Gaps

GAP START TIME              GAP END TIME                   GAP (SEC)
2017-05-11T05:15:00.000 -- 2017-05-11T06:15:00.000       3600.0000
2017-05-11T07:10:00.000 -- 2017-05-11T07:35:00.000       1500.0000
2017-05-11T07:45:00.000 -- 2017-05-11T08:35:00.000       3000.0000 
2017-05-15T17:55:00.000 -- 2017-05-16T00:00:00.000       21900.000
2017-05-15T17:55:00.000 -- 2017-05-16T00:00:00.000       21900.000
2017-05-15T16:30:00.000 -- 2017-05-15T19:30:00.000       10800.000
2017-05-15T19:50:00.000 -- 2017-05-16T00:00:00.000       15000.000
2017-05-16T00:00:00.000 -- 2017-05-16T11:05:00.000       39900.000
2017-05-16T17:25:00.000 -- 2017-05-17T00:00:00.000       23700.000
2017-05-16T00:00:00.000 -- 2017-05-16T11:05:00.000       39900.000
2017-05-16T17:25:00.000 -- 2017-05-17T00:00:00.000       23700.000
2017-05-16T00:00:00.000 -- 2017-05-17T00:00:00.000       86400.000

Detector issues

Detectors 1, 3, 6, and 8 are powered on, and are recording events. Some oscillations observed on detector 1,3, and 8 during the weekend have stopped. Data look clean for the last couple of days.

On Monday, May 15, the HV on G6 was decreased from ~3400 to ~2000V to improve its livetime. The experiment seemed to work.

2017-135-17:50:10 /ihvdac detector=6, voltage=103 ; 2000 V 

Notes

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
Detector problems? See above
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