Tohban Report 2018-01-17

Tohban Reports
Start Date:	27 December 2017
End Date:	3 January 2018
Tohban:	Jim McTiernan, Martin Fivian (Jan 2-3)
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

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

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

And how many had EXCELLENT coverage?

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

There were RHESSI flares/GOES flares 2 / 2 over the time range 27-Dec-17 03-Jan-18

Memory Management

Decimation was active/vigorous for the full time period, SSR fill was between 38.8 and 63.9%.

Spacecraft Status

Detectors 1, 3, 6, and 8 are recording events. The cold tips are 134.3 and 132.5 K as of 27-Dec-2017. The cold plates, 1 and 2 are 160.0 and 158.6 K. Cryocooler power is 73.8W, cryocooler efficiencies are 0.0268 and 0.0272. 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 27-dec-2017 TO 3-jan-2018

TIME RANGE: 2017-12-27T00:00:00.000 -- 2018-01-03T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
N_GAPS           4
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-12-28T13:45:00.000 -- 2017-12-28T13:50:00.000       300.00000
2017-12-28T14:10:00.000 -- 2017-12-28T14:15:00.000       300.00000
2017-12-29T13:45:00.000 -- 2017-12-29T13:50:00.000       300.00000
2018-01-02T10:05:00.000 -- 2018-01-02T10:15:00.000       600.00000
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-12-28T14:10:00.000 -- 2017-12-28T14:15:00.000       300.00000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-12-27T05:45:00.000 -- 2017-12-27T05:55:00.000       600.00000

Detector issues

Detectors 1, 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