Tohban Report 2018-03-21

Tohban Reports
Start Date:	14 March 2018
End Date:	21 March 2018
Tohban:	Jim McTiernan
Tohban email:	jimm@ssl.berkeley.edu
Next Tohban:	TBD
List all reports

Solar Activity

Quiet...

No RHESSI flares to count. Maybe an A5 flare for GOES on 20-mar-2018.

Memory Management

Decimation was active/vigorous for the full time period, SSR fill was up to 83% on 2018-03-15, and the pointer was jumped to free all of the memory. This resulted in a Vc3 data gap from 7-mar-2018 02:56 until 15-mar-18:45. Currently the SSR fill is approximately 50%.

Spacecraft Status

Detectors 3 and 8 are recording events. The cold tips are 136.4 and 134.6 K as of 19-Mar-2018. The cold plates, 1 and 2 are 159.6 and 158.2 K. Cryocooler power is 54.9W, cryocooler efficiencies are 0.0339 and 0.0343. 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 14-mar-2018 TO 22-mar-2018, note the the large gaps for 21-march-2018 are likely to be filled.

TIME RANGE: 2018-03-14T00:00:00.000 -- 2018-03-22T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000       29400.000
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
N_GAPS           5
GAP START TIME              GAP END TIME                   GAP (SEC)
2018-03-18T05:10:00.000 -- 2018-03-18T10:50:00.000       20400.000
2018-03-19T11:05:00.000 -- 2018-03-19T12:00:00.000       3300.0000
2018-03-20T10:35:00.000 -- 2018-03-20T11:30:00.000       3300.0000
2018-03-21T12:00:00.000 -- 2018-03-21T12:40:00.000       2400.0000
2018-03-21T15:50:00.000 -- 2018-03-22T00:00:00.000       29400.000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           6
GAP START TIME              GAP END TIME                   GAP (SEC)
2018-03-14T00:00:00.000 -- 2018-03-15T18:45:00.000       153900.00
2018-03-15T23:55:00.000 -- 2018-03-16T01:10:00.000       4500.0000
2018-03-16T07:20:00.000 -- 2018-03-16T10:45:00.000       12300.000
2018-03-16T18:25:00.000 -- 2018-03-16T18:30:00.000       300.00000
2018-03-17T22:45:00.000 -- 2018-03-18T02:25:00.000       13200.000
2018-03-18T17:05:00.000 -- 2018-03-22T00:00:00.000       284100.00

Detector issues

Detectors 3 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?	See above
Attenuator operation	Nominal
Ref. deadtime for Att.thresholds	22.x%
Detector problems?	See above