Tohban Report 2017-11-08

Tohban Reports
Start Date:	1 November 2017
End Date:	8 November 2017
Tohban:	Jim McTiernan
Tohban email:	jimm@ssl.berkeley.edu
Next Tohban:	TBD
List all reports

Solar Activity

QUIET!

% HSI_TOHBAN_FLARE_COUNTER: No RHESSI Flare list for this time period % HSI_TOHBAN_FLARE_COUNTER: No RHESSI Flares for this time period

Memory Management

Decimation was active/vigorous for the full time period, with the SSR level ranging from 50 to 70%, due to minimal BGS contact. More BGS passes are in the queue.

Spacecraft Status

Detectors 1, 3, 6, and 8 are recording events. The cold tips are 131.5 and 129.7 K as of 6-nov-2017. The cold plates, 1 and 2 are 158.7 and 157.3 K. Cryocooler power is steady at 74.0W, cryocooler efficiencies are 0.0273 and 0.0277. 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 1-nov-2017 TO 8-nov-2017

TIME RANGE: 2017-11-01T00:00:00.000 -- 2017-11-08T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-11-04T08:40:00.000 -- 2017-11-04T08:50:00.000       600.00000
NO GAPS IN APP_ID = 154 (VC1-PMTRAS)
GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30
N_GAPS           1
GAP START TIME              GAP END TIME                   GAP (SEC)
2017-11-05T20:45:00.000 -- 2017-11-08T00:00:00.000       184500.00

Note that the VC3 "gap" is due to packets that have not yet been transmitted.

Detector issues

Detectors 1, 3, 6, and 8 are powered on, and are recording events. Fast thresholds for detectors 1, 6, and 8 were raised to 0xFF on November 3:

17-307-16:30:20 start sc_ats_load(T17310SLTN34.00)
17-307-16:32:10 start idpu_clear halted

17-307-16:32:21 start idib_chg_thrshld(8,rear,fast,0xFF) ; was 0xC0
17-307-16:32:25 /IDPUDUMPTABL TABLE=DIBTBL8
17-307-16:32:25 /IDPUTABLE8 OFFSET=REARFASTDAC
17-307-16:32:37 /IDPULOAD VALUE=0xFF

17-307-16:32:54 start idib_chg_thrshld(6,rear,fast,0xFF) , was 0x60
17-307-16:32:58 /IDPUDUMPTABL TABLE=DIBTBL6
17-307-16:32:58 /IDPUTABLE6 OFFSET=REARFASTDAC
17-307-16:33:08 /IDPULOAD VALUE=0xFF

17-307-16:33:21 start idib_chg_thrshld(1,rear,fast,0xFF) ; was 0x90
17-307-16:33:25 /IDPUDUMPTABL TABLE=DIBTBL1
17-307-16:33:25 /IDPUTABLE1 OFFSET=REARFASTDAC
17-307-16:33:36 /IDPULOAD VALUE=0xFF

17-307-16:33:56 start show_temps_avg
17-307-16:34:14 CP1: 158.1 K
17-307-16:34:14 CP2: 156.7 K
17-307-16:34:14 CT1: 132.5 K
17-307-16:34:14 CT2: 130.7 K
17-307-16:34:14 TST: 192.0 K
17-307-16:34:14 cp1 - ct1 = 25.82 K
17-307-16:34:14 Cryo Power: 74.7 W
17-307-16:34:14 Cryo Accel: 11.9 mG

== 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	23.x%
Detector problems?	See above