Tohban Report 2014-03-19
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(Created page with "{{Infobox Tohban Report| |start_date = 12 Mar 2014 |end_date = 19 Mar 2014 |tohban_name = Lindsay Glesener |tohban_email = glesener@ssl.berkeley.edu |next_tohban = }} == Solar...") |
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== Solar Activity == | == Solar Activity == | ||
| - | Solar activity was a bit lower than the previous week. There are 10 ARs on the disk. AR 12010, in the SE quadrant, is currently the most active. | + | Solar activity was a bit lower than the previous week. There are 10 ARs on the disk. AR 12010, in the SE quadrant, is currently the most active. In the past two days, activity has been picking up a little. |
How many GOES flares occurred? | How many GOES flares occurred? | ||
| Line 24: | Line 24: | ||
== Memory Management == | == Memory Management == | ||
| - | No SSR issues this week. We're still in Active / Vigorous | + | No SSR issues this week. We're still in Active / Vigorous. If activity stays as is we could probably stand to dial that back to Normal / Vigorous. (If activity picks up, then best not to.) |
== Spacecraft Status == | == Spacecraft Status == | ||
| Line 33: | Line 33: | ||
== Detector issues == | == Detector issues == | ||
| + | |||
| + | Thresholds were adjusted on several detectors. The front fast threshold was raised for Det 6, and lowered for Dets 4 and 2. Det 2 front slow threshold was also lowered. | ||
| + | |||
| + | Detector 2 seems to be operating ok with the lower thresholds. It is now completely segmented except for brief periods at the peak of the SAA. | ||
| + | |||
| + | A test was performed whereby detector 6's voltage was lowered for one orbit and then raised, though not all the way back up. Before beginning this test, G6 front fast valids were at 237k! During the test, with lowered HV, the rates dropped and livetime went up. When the HV was turned back up, rates increased again and livetime went down. It was decided to leave the detector at a bias voltage of 3064V, a net drop of 200V. Note that even at this value, fast rates were ~15k and livetime was ~77%. | ||
| + | |||
| + | Command list from Monday, March 17: | ||
| + | |||
| + | (Wallops) | ||
| + | --------------G6-------------- | ||
| + | 14-076-20:34:17 /IDPUTABLE6 FRONTFASTDAC | ||
| + | 14-076-20:34:33 /IDPULOAD VALUE=0xA0 ;Was 0x90 | ||
| + | |||
| + | --------------G4-------------- | ||
| + | 14-076-20:34:51 /IDPUTABLE4 FRONTFASTDAC | ||
| + | 14-076-20:37:48 /IDPULOAD VALUE=22 (in decimal, commanded to 0x16) ;was 0x50 | ||
| + | 14-076-20:38:00 /IDPULOAD VALUE=0x22 (This was written to byte 9 (Rear slow)) ;was 0x30 | ||
| + | |||
| + | 14-076-20:38:07 /IDPUTABLE4 FRONTFASTDAC | ||
| + | 14-076-20:38:12 /IDPULOAD VALUE=0x22 (correct front fast threshold change) | ||
| + | 14-076-20:38:18 /IDPULOAD VALUE=0x30 (undoing the change to the rear slow) | ||
| + | |||
| + | --------------G2-------------- | ||
| + | 14-076-20:38:58 /IDPUTABLE2 FRONTFASTDAC | ||
| + | 14-076-20:39:22 /IDPULOAD VALUE=0x22 ;was 0x80 | ||
| + | |||
| + | |||
| + | (BGS) | ||
| + | --------------G6-------------- | ||
| + | 14-076-23:45:02 /IHVDAC DETECTOR=6, VOLTAGE=148 (lowered from 168) | ||
| + | 14-076-23:46:05 /IHVDAC DETECTOR=6, VOLTAGE=128 (2474 V) | ||
| + | |||
| + | --------------G2-------------- | ||
| + | 14-076-23:48:25 /IDPUTABLE2 FRONTSLOWDAC | ||
| + | 14-076-23:48:40 /IDPULOAD VALUE=0x0C ;was 0x38 | ||
| + | |||
| + | |||
| + | (BGS) | ||
| + | --------------G6-------------- | ||
| + | 14-077-01:23:14 /IHVDAC DETECTOR=6, VOLTAGE=138 (raised from 128) | ||
| + | 14-077-01:24:40 /IHVDAC DETECTOR=6, VOLTAGE=148 | ||
| + | 14-077-01:26:08 /IHVDAC DETECTOR=6, VOLTAGE=158 (voltage ramp halted at 3064 V) | ||
== Other notes == | == Other notes == | ||
Revision as of 17:53, 19 March 2014
| Tohban Reports | |
|---|---|
| Start Date: | 12 Mar 2014 |
| End Date: | 19 Mar 2014 |
| Tohban: | Lindsay Glesener |
| Tohban email: | glesener@ssl.berkeley.edu |
| Next Tohban: | |
| List all reports | |
Contents |
Solar Activity
Solar activity was a bit lower than the previous week. There are 10 ARs on the disk. AR 12010, in the SE quadrant, is currently the most active. In the past two days, activity has been picking up a little.
How many GOES flares occurred?
Flares above B, C, M, X class were 0 32 3 0
And how many of these are listed in the RHESSI flare list?
Flares above B, C, M, X class were 0 23 2 0
And how many had EXCELLENT coverage?
Flares above B, C, M, X class were 0 0 0 0
There were RHESSI flares/GOES flares 241 / 35 over the time range 12-Mar-14 19-Mar-14
Memory Management
No SSR issues this week. We're still in Active / Vigorous. If activity stays as is we could probably stand to dial that back to Normal / Vigorous. (If activity picks up, then best not to.)
Spacecraft Status
Data Gaps
No data gaps.
Detector issues
Thresholds were adjusted on several detectors. The front fast threshold was raised for Det 6, and lowered for Dets 4 and 2. Det 2 front slow threshold was also lowered.
Detector 2 seems to be operating ok with the lower thresholds. It is now completely segmented except for brief periods at the peak of the SAA.
A test was performed whereby detector 6's voltage was lowered for one orbit and then raised, though not all the way back up. Before beginning this test, G6 front fast valids were at 237k! During the test, with lowered HV, the rates dropped and livetime went up. When the HV was turned back up, rates increased again and livetime went down. It was decided to leave the detector at a bias voltage of 3064V, a net drop of 200V. Note that even at this value, fast rates were ~15k and livetime was ~77%.
Command list from Monday, March 17:
(Wallops)
G6--------------
14-076-20:34:17 /IDPUTABLE6 FRONTFASTDAC 14-076-20:34:33 /IDPULOAD VALUE=0xA0 ;Was 0x90
G4--------------
14-076-20:34:51 /IDPUTABLE4 FRONTFASTDAC 14-076-20:37:48 /IDPULOAD VALUE=22 (in decimal, commanded to 0x16) ;was 0x50 14-076-20:38:00 /IDPULOAD VALUE=0x22 (This was written to byte 9 (Rear slow)) ;was 0x30
14-076-20:38:07 /IDPUTABLE4 FRONTFASTDAC 14-076-20:38:12 /IDPULOAD VALUE=0x22 (correct front fast threshold change) 14-076-20:38:18 /IDPULOAD VALUE=0x30 (undoing the change to the rear slow)
G2--------------
14-076-20:38:58 /IDPUTABLE2 FRONTFASTDAC 14-076-20:39:22 /IDPULOAD VALUE=0x22 ;was 0x80
(BGS)
G6--------------
14-076-23:45:02 /IHVDAC DETECTOR=6, VOLTAGE=148 (lowered from 168) 14-076-23:46:05 /IHVDAC DETECTOR=6, VOLTAGE=128 (2474 V)
G2--------------
14-076-23:48:25 /IDPUTABLE2 FRONTSLOWDAC 14-076-23:48:40 /IDPULOAD VALUE=0x0C ;was 0x38
(BGS)
G6--------------
14-077-01:23:14 /IHVDAC DETECTOR=6, VOLTAGE=138 (raised from 128) 14-077-01:24:40 /IHVDAC DETECTOR=6, VOLTAGE=148 14-077-01:26:08 /IHVDAC DETECTOR=6, VOLTAGE=158 (voltage ramp halted at 3064 V)
Other notes
Spacecraft Management
The yellow/red warnings and hard cutoffs for the cold plate two temperatures were all raised by 5 degrees.
| Decimation | Active/Vigorous |
| HLAT Decimation | Rear decimation weight 6, no front decimation |
| Night time data (fronts) | Disabled (4 minutes before and after eclipse) |
| Night time data (rears) | Enabled |
| Require extra passes? | Yes |
| Requirement for moving pointer? | No |
| Attenuator operation | Normal |
| Detector problems? |
