Tohban Report 2016-12-21
From RHESSI Wiki
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."
2016-355-21:47:45 /IDPUTABLE3 OFFSET=REARFASTDAC
2016-355-21:47:55 /IDPULOAD VALUE=0xFF ; was 0xE0
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. |