Tohban Report 2018-01-31

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Tohban Reports
Start Date: 24 January 2018
End Date: 31 January 2018
Tohban: Jim McTiernan
Tohban email: jimm@ssl.berkeley.edu
Next Tohban: TBD



Contents

Solar Activity

Quiet...

How many GOES flares occurred?

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

RHESSI flare list contains 0 over the time range 24-Jan-18 31-Jan-18

Memory Management

Decimation was active/vigorous for the full time period, SSR fill was between 0 and 35%. Currently the SSR fill is approximately 20% at the end of passes each day.

Spacecraft Status

Detectors 3, 6, and 8 are recording events. The cold tips are 133.4 and 131.6 K as of 29-Jan-2018. The cold plates, 1 and 2 are 158.7 and 157.3 K. Cryocooler power is 64.3W, cryocooler efficiencies are 0.0302 and 0.0306. See:

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

for a summary plot of recent temperatures, efficiencies and accelerometer values.

Data Gaps

DATA GAPS FOR 24-jan-2018 TO 31-jan-2018

TIME RANGE: 2018-01-24T00:00:00.000 -- 2018-01-31T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
N_GAPS           3
GAP START TIME              GAP END TIME                   GAP (SEC)
2018-01-25T13:50:00.000 -- 2018-01-25T13:55:00.000       300.00000
2018-01-25T20:20:00.000 -- 2018-01-25T20:25:00.000       300.00000
2018-01-28T15:15:00.000 -- 2018-01-28T15:20:00.000       300.00000
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           2
GAP START TIME              GAP END TIME                   GAP (SEC)
2018-01-29T08:35:00.000 -- 2018-01-29T10:50:00.000       8100.0000
2018-01-30T05:45:00.000 -- 2018-01-31T00:00:00.000       65700.000

Detector issues

Detectors 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week.

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 Nominal
Ref. deadtime for Att.thresholds 35.x%
Detector problems? See above