Tohban Report 2016-12-21

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Tohban Reports
Start Date: 14 December 2016
End Date: 21 December 2016
Tohban: Pascal Saint-Hilaire
Tohban email: Pascal@ssl.berkeley.edu
Next Tohban: TBD
List all reports



Contents

Solar Activity

Solar activity during the week was low.

How many GOES flares occurred?

 Flares above B, C, M, X class were      5     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 / 5 over the time range 13-Dec-16 20-Dec-16


Memory Management

Despite not taking data at night (F & R), and Quiet/Vigorous decimation scheme, it was difficult to bring the memory below 50%.


Spacecraft Status

Detectors 3 and 9 are active and taking data. The cryocooler power was brought down to 80 W at the beginning of the week.

Data Gaps

GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30 N_GAPS 1 GAP START TIME GAP END TIME GAP (SEC) 2016-12-15T06:55:00.000 -- 2016-12-15T11:40:00.000 17100.000

GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30 N_GAPS 1 GAP START TIME GAP END TIME GAP (SEC) 2016-12-16T04:20:00.000 -- 2016-12-16T09:00:00.000 16800.000

DATA GAPS FOR 2016/12/17 TIME RANGE: 2016-12-17T00:00:00.000 -- 2016-12-18T00:00:00.000 GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30 N_GAPS 1 GAP START TIME GAP END TIME GAP (SEC) 2016-12-17T18:15:00.000 -- 2016-12-17T20:00:00.000 6300.0000 GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4 N_GAPS 1 GAP START TIME GAP END TIME GAP (SEC) 2016-12-17T18:15:00.000 -- 2016-12-17T20:00:00.000 6300.0000 NO GAPS IN APP_ID = 102 (VC3-MONITOR RATES)

...and important gaps reported on the 19th and 20th, because they have not been downloaded yet!


Detector issues

Lots of fast threshold adjustments to improve livetimes this week:



Today we increased the attenuator thresholds at account for the increase in background counts. This commanding was done today, Dec 14, 2016 at 19:36 UTC. The new attenuator thresholds are as follows:

 Command                % deadtime  Attenuator state
/IDPULOAD VALUE=0       ;   0.00      Min A0
/IDPULOAD VALUE=31      ;  12.16      Max A0
/IDPULOAD VALUE=22      ;   8.63      Min A1
/IDPULOAD VALUE=36      ;  14.12      Max A1
/IDPULOAD VALUE=20      ;   7.84      Min A2
/IDPULOAD VALUE=56      ;  21.96      Max A2
/IDPULOAD VALUE=24      ;   9.41      Min A3
/IDPULOAD VALUE=255     ; 100.00      Max A3



AGO-81837 16-351-18:41:25 start idib_chg_thrshld(3, REAR, FAST, 0xE0) 16-351-18:41:29 /IDPUDUMPTABL TABLE=DIBTBL3 16-351-18:41:29 /IDPUTABLE3 OFFSET=REARFASTDAC 16-351-18:41:50 /IDPULOAD VALUE=0xE0 16-351-18:43:39 start show_temps_avg 16-351-18:43:56 CP1: 151.3 K 16-351-18:43:56 CP2: 150.0 K 16-351-18:43:56 CT1: 127.5 K 16-351-18:43:56 CT2: 125.5 K 16-351-18:43:56 TST: 190.0 K 16-351-18:43:56 CP1: 151.3 K 16-351-18:43:56 CP2: 149.8 K 16-351-18:43:56 CT1: 127.3 K 16-351-18:43:56 CT2: 125.5 K 16-351-18:43:56 TST: 190.2 K 16-351-18:43:56 cp1 - ct1 = 24.33 K 16-351-18:43:56 Cryo Power: 80.0 W 16-351-18:43:56 Cryo Accel: 12.5 mG

AGO-81838 16-351-20:20:39 start idib_chg_thrshld(3,REAR,FAST,0x70) 16-351-20:20:43 /IDPUDUMPTABL TABLE=DIBTBL3 16-351-20:20:43 /IDPUTABLE3 OFFSET=REARFASTDAC 16-351-20:20:55 /IDPULOAD VALUE=0x70 16-351-20:25:51 start show_temps_avg 16-351-20:26:09 CP1: 151.2 K 16-351-20:26:09 CP2: 150.1 K 16-351-20:26:09 CT1: 127.7 K 16-351-20:26:09 CT2: 126.1 K 16-351-20:26:09 TST: 190.2 K 16-351-20:26:09 CP1: 151.4 K 16-351-20:26:09 CP2: 150.0 K 16-351-20:26:09 CT1: 127.8 K 16-351-20:26:09 CT2: 126.0 K 16-351-20:26:09 TST: 190.3 K 16-351-20:26:09 cp1 - ct1 = 23.36 K 16-351-20:26:09 Cryo Power: 80.7 W 16-351-20:26:09 Cryo Accel: 13.6 mG



2016-351-23:39:02 /IDPUTABLE3 OFFSET=REARFASTDAC 2016-351-23:39:13 /IDPULOAD VALUE=0xE0 ; was 0x70

2016-351-23:39:26 /IDPUTABLE3 OFFSET=FRONTFASTDAC 2016-351-23:39:32 /IDPULOAD VALUE=0x80 ; was ox60



The folloing changes have been made today at 2016-352-23:12 UTC.

Attenuator thresholds:

/IDPULOAD VALUE=0  ; 0.00 Min A0 /IDPULOAD VALUE=42  ; 16.47 Max A0 /IDPULOAD VALUE=33  ; 12.94 Min A1 /IDPULOAD VALUE=47  ; 18.43 Max A1 /IDPULOAD VALUE=31  ; 12.16 Min A2 /IDPULOAD VALUE=67  ; 26.27 Max A2 /IDPULOAD VALUE=35  ; 13.72 Min A3 /IDPULOAD VALUE=255  ; 100.00 Max A3

G3: 16-352-23:13:43 /IDPUTABLE3 OFFSET=FRONTFASTDAC 16-352-23:13:54 /IDPULOAD VALUE=0xA0 ; was 0x80

G9: 16-352-23:15:33 /IDPUTABLE9 OFFSET=FRONTFASTDAC 16-352-23:15:43 /IDPULOAD VALUE=0x80 ; was 0x50


The RHESSI read pointer was skipped forward this morning to reduce the SSR fill to ~40% in preperation for the ALMA observation. We skipped over data recorded between 351-04:22 and 351-15:12 UTC. The Front Fast thresholds were increased on both G3 and G9.

Jeremy

2016-353-17:48:43 /IDPUTABLE3 OFFSET=FRONTFASTDAC 2016-353-17:48:48 /IDPULOAD VALUE=0xB0 ; was 0xA0

2016-353-17:49:07 /IDPUTABLE9 OFFSET=FRONTFASTDAC 2016-353-17:49:16 /IDPULOAD VALUE=0x90 ; was 0x80


We had to reply the skipped data, as some of it was during an ALMA observation: (it did bring the SSR fill well below the 50% threshold, so that's good). "I was very busy today, away from email. I can tell you that those data are nearly all down, we replayed data from 2016-351-09:00 UT up to 15:13 UTC, where we skipped the read pointer to on Sunday."



Other notes

ALMA observations this week! > Friday AM, UT 12:30-15:30 Dec 16 > 2016.1.00202.S network region, 60" FOV, bands 3 and 6 > Coordinates: (0,+245") at 12 UT Dec 15 with tracking for rotation -> (+220",+247") at 12 UT Dec 16 > > Friday PM, UT 17:00-20:00 Dec 16 > 2016.1.00423.S quiet Sun at disk center, 60" FOV, bands 3 and 6 > Coordinates: (0,0) at 17 UT Dec 16 with tracking for rotation > > Saturday AM, UT 12:30-15:30 Dec 17 > 2016.1.00182.S west limb at the equator for spicules, 60" FOV, bands 3+6 Coordinates: (+990",0), no rotation tracking > > Sunday PM, UT 18:00-20:15 Dec 18 > 2016.1.00156.S prominence, west limb, 60"x120" FOV, band 3 Coordinates: (+974",+282"), off limb, no rotation tracking



Spacecraft Management

Decimation Quiet/Vigorous
HLAT Decimation Decimating
Night time data (fronts) full-time
Night time data (rears) full-time
Require extra passes? No
Requirement for moving pointer? No
Attenuator operation Both stuck in - had to adjust attenuator deadtime threshold and improve D3f livetime
Detector problems? See notes above.
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