Tohban Report 2017-01-11

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(Detector issues)
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  2017-004-21:34:14 start icryomain_ramp(75)
  2017-004-21:34:14 start icryomain_ramp(75)
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Acceleration have decreased a bit (as expected, now at ~11 mg). And cold tips temps have gone down!?! By about 3 degrees. (Cold plates by about 2 degrees).
To avoid pesky shutter motions due to the ever-increasing detector 3f deadtime (which currently controls attenuator motions). The attenuator logic has been disabled:
To avoid pesky shutter motions due to the ever-increasing detector 3f deadtime (which currently controls attenuator motions). The attenuator logic has been disabled:

Revision as of 19:09, 11 January 2017


Tohban Reports
Start Date: 4 January 2016
End Date: 11 January 2017
Tohban: Pascal Saint-Hilaire
Tohban email: pascal@ssl.berkeley.edu
Next Tohban: TBD
List all reports



Contents

Solar Activity

Very quiet this week, except for a few flares in the high Bs in the past day or so.

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 03-Jan-17 10-Jan-17

No overlapping RHESSI flares to count, sorry

Memory Management

Decimation was changed to Normal/Vigorous (from quiet/vigorous) last Wednesday. :

2017-004-21:38:11 start idpu_dec_normal_vigorous

The SSR has been hovering near the 20% level at the end of pass sets, and is set to be much lower than that at the end of today's set. It was peaking at ~35% at beginning of the pass set, meaning that there was a bit of decimation going on some of the time.

Detectors 3 and 9 are recording events during spacecraft day, and for 4 minutes prior to and after daylight.


Spacecraft Status

Detectors 3 and 9 are recording events.

Cryocooler power has been turned dow to ~75 W:

2017-004-21:34:14 start icryomain_ramp(75)

Acceleration have decreased a bit (as expected, now at ~11 mg). And cold tips temps have gone down!?! By about 3 degrees. (Cold plates by about 2 degrees).

To avoid pesky shutter motions due to the ever-increasing detector 3f deadtime (which currently controls attenuator motions). The attenuator logic has been disabled:

2017-004-21:37:35 /idpudisarm ale  ; logic disabled
2017-004-21:37:46 /iattmove move=out1 ;thick out
2017-004-21:37:56 /iattmove move=out2 ;thin out

...and both attenuators are locked out. We need to be mindful of this when solar activity picks up.

Data Gaps

Besides the usual occasional 300 s gap in VC1-SOH data, not much:

DATA GAPS FOR 2017/01/07
TIME RANGE: 2017-01-07T00:00:00.000 -- 2017-01-08T00:00:00.000
NO GAPS IN APP_ID = 1 (VC1-SOH)
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)
2017-01-07T01:25:00.000 -- 2017-01-07T01:30:00.000       300.00000


Detector issues

Detectors 3 and 9 are powered on, and are recording events. No threshold or HV changes during the week.

D3f and D9f livetimes are ~85% and ~80%, while D3r and D9r are ~85% and ~82%.

Notes

Spacecraft Management

Decimation Normal/Vigorous
HLAT Decimation Rear decimation
Night time data (fronts) full-time
Night time data (rears) full-time
Require extra passes? No
Requirement for moving pointer? No
Attenuator operation Both locked out.
Detector problems? No.
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