Tohban Report 2018-02-28

Tohban Reports
Start Date:	21 February 2018
End Date:	28 February 2018
Tohban:	Jim McTiernan
Tohban email:	jimm@ssl.berkeley.edu
Next Tohban:	TBD
List all reports

Solar Activity

Quiet...

How many GOES flares occurred?

 Flares above B, C, M, X class were      2     0     0     0

RHESSI flare list contains 0 over the time range 20-Feb-18 27-Feb-18

No overlapping RHESSI flares to count.

Memory Management

Decimation was active/vigorous for the full time period, SSR fill was between 62 and 25%. Currently the SSR fill is approximately 25% at the end of passes each day.

Spacecraft Status

Detectors 3 and 8 are recording events. The cold tips are 133.8 and 132.1 K as of 25-Feb-2018. The cold plates, 1 and 2 are 158.8 and 157.3 K. Cryocooler power is 64.4W, cryocooler efficiencies are 0.0297 and 0.0300. 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 20-feb-2018 TO 28-feb-2018

TIME RANGE: 2018-02-20T00:00:00.000 -- 2018-02-28T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2018-02-20T20:45:00.000 -- 2018-02-20T21:05:00.000       1200.0000
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
N_GAPS           5
GAP START TIME              GAP END TIME                   GAP (SEC)
2018-02-20T15:00:00.000 -- 2018-02-20T15:35:00.000       2100.0000
2018-02-20T20:45:00.000 -- 2018-02-20T21:00:00.000       900.00000
2018-02-21T07:05:00.000 -- 2018-02-21T15:05:00.000       28800.000
2018-02-23T15:10:00.000 -- 2018-02-23T17:30:00.000       8400.0000
2018-02-26T13:35:00.000 -- 2018-02-26T16:00:00.000       8700.0000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           0

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?	No
Attenuator operation	Nominal
Ref. deadtime for Att.thresholds	28.x%
Detector problems?	See above