Tohban Report 2017-12-13

Tohban Reports
Start Date:	6 December 2017
End Date:	13 December 2017
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      3     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 1 / 3 over the time range 05-Dec-17 12-Dec-17

Memory Management

Decimation was active/vigorous for the full time period, with the SSR level now 57%.

Spacecraft Status

Detectors 1, 3, 6, and 8 are recording events. The cold tips are 133.9 and 132.1 K as of 11-Dec-2017. The cold plates, 1 and 2 are 160.2 and 158.8 K. Cryocooler power is 74.0W, 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 7-dec-2017 TO 13-dec-2017

TIME RANGE: 2017-12-07T00:00:00.000 -- 2017-12-13T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
 N_GAPS           2
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-12-08T21:00:00.000 -- 2017-12-08T22:45:00.000       6300.0000
2017-12-12T22:20:00.000 -- 2017-12-13T00:00:00.000       6000.0000
GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-12-08T15:15:00.000 -- 2017-12-08T15:35:00.000       1200.0000
2017-12-08T21:00:00.000 -- 2017-12-08T22:40:00.000       6000.0000
2017-12-10T14:15:00.000 -- 2017-12-10T16:15:00.000       7200.0000
2017-12-11T15:20:00.000 -- 2017-12-11T15:45:00.000       1500.0000
2017-12-12T14:50:00.000 -- 2017-12-12T15:15:00.000       1500.0000
2017-12-12T22:20:00.000 -- 2017-12-13T00:00:00.000       6000.0000
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           3
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-12-08T02:35:00.000 -- 2017-12-08T06:10:00.000       12900.000
2017-12-11T06:40:00.000 -- 2017-12-11T09:35:00.000       10500.000
2017-12-11T10:55:00.000 -- 2017-12-13T00:00:00.000       133500.00

Detector issues

Detectors 1, 3, 6, and 8 are powered on, and are recording events. No threshold changes or HV changes this past week. The thin attenuator came in on 10-Dec-2017, at approximately 22:58. The attenuator dead time thresholds were changed on 12-Dec-2017, to take into account the increased G3 background deadtime (currently 30.6%). Both thick and thin attenuators came out after the increase. The commanding was done 2017-346-20:34:12 UTC.

The new thresholds are:

 0.00   Min A0
35.69   Max A0
32.16   Min A1
37.65   Max A1
31.37   Min A2
45.49   Max A2
32.94   Min A3
100.0   Max A3

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