Tohban Report 2015-12-16

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== Data Gaps ==
== Data Gaps ==
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No significantly large data gap.
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GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
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2015-12-11T19:35:00.000 -- 2015-12-11T19:50:00.000      900.00000
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GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4
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2015-12-11T19:40:00.000 -- 2015-12-11T19:50:00.000      600.00000

Revision as of 05:43, 16 December 2015


Tohban Reports
Start Date: 9 Dec 2015
End Date: 16 Dec 2015
Tohban: Mitsuo Oka
Tohban email: moka@ssl.berkeley.edu
Next Tohban: TBD
List all reports



Contents

Solar Activity

Solar activity was low (at B-class level) through out the week although there were some C-class activities during the weekend. There are 9 ARs on disk. 4 ARs are expected to be rotated off the disk within 1 or 2 days.

How many GOES flares occurred?

 Flares above B, C, M, X class were      6     1     0     0

And how many of these are listed in the RHESSI flare list?

 Flares above B, C, M, X class were      2     1     0     0

And how many had EXCELLENT coverage?

 Flares above B, C, M, X class were      2     0     0     0

There were RHESSI flares/GOES flares 183 / 7 over the time range 07-Dec-15 14-Dec-15

Memory Management

Decimation was active/vigorous for the full time period. Both front and rear detectors are off during SC night, except for 4 minutes on either side. The SSR is not emptying out.

Spacecraft Status

The cold plates, 1 and 2 were at 132.5 and 131.1 K, on 2015-12-15.

Data Gaps

No significantly large data gap.

GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30

2015-12-11T19:35:00.000 -- 2015-12-11T19:50:00.000       900.00000

GAPS IN APP_ID = 154 (VC1-PMTRAS) WITH PACKET RATE LT 4

2015-12-11T19:40:00.000 -- 2015-12-11T19:50:00.000       600.00000


Detector issues

D1

Enhanced fast rates (and reduced livetime) in the rear segment. Because rear-fast threshold is already at 0xFF, we tried lowering HV. No obvious change in the monitor rates.

 Dec 14, 18:19, lowered HV from 3600 to 3400 V.

D2

Dec 09, 23:42, raised front fast threshold from 0x70 to 0xFF
Dec 14, 18:19, lowered HV from 4100 to 3900 V

D3

Dec 10, 16:42-18:19, power-cycling

D4

Dec 10, 21:38, lowered HV from 1500 V to 1000 V
Dec 12, 00:33, events turned on for 3.5 min

D5

No change made

D6

Dec 10, 19:58, lowered front slow threshold from 0x40 to 0x30
Dec 12, 00:30, lowered front slow threshold from 0x30 to 0x20

D7

Dec 10, 21:38, lowered front slow threshold from 0x20 to 0x10
Dec 12, 00:33, lowered HV from 3500 to 3300 V
Dec 12, 19:20, raised front slow threshold from 0x10 to 0x20 

D8

No change made

D9

D9 is off

Other notes

Spacecraft Management

Decimation Active/Vigorous
HLAT Decimation Rear decimation weight 6, no front decimation
Night time data (fronts) +/- 4 minutes
Night time data (rears) +/- 4 minutes
Require extra passes? No
Requirement for moving pointer? No
Attenuator operation Working as expected
Detector problems? See notes above.
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