Tohban Report 2014-12-31

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Tohban Reports
Start Date: 24 Dec 2014
End Date: 31 Dec 2014
Tohban: Mitsuo Oka
Tohban email:
Next Tohban: Milo Buitrago
List all reports


Solar Activity

Solar activity was relative low with only 1 M class flare. There are currently 7 ARs on the disk, 2 are rotating off. There is 1 AR that has rotated on disk a couple of days ago, but it hasn't produced any major flare yet.

How many GOES flares occurred?

 Flares above B, C, M, X class were      2    37     1     0

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

 Flares above B, C, M, X class were      0    29     1     0

And how many had EXCELLENT coverage?

 Flares above B, C, M, X class were      0    11     1     0

There were RHESSI flares/GOES flares 345 / 40 over the time range 23-Dec-14 30-Dec-14

Memory Management

Decimation is still Active/Vigorous. Night time event collection (rear segments) has been turned on. In the next week, we may return to Normal/Vigorous and start collecting events from front segments.

Spacecraft Status

The cold plates, 1 and 2 were at 124.5 and 127.9 K, on 31-Dec-2015 UTC.

Data Gaps

There was no significant data gap.

Detector issues

D5 has largely segmented over the past week. The next tohban should try to lower the front threshold.

The other detectors are stable, 2 and 4 are unsegmented.

Light leak in D2 front, D9 rear and D5 rear.

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) full nighttime events
Require extra passes? No
Requirement for moving pointer? No
Attenuator operation Normal
Detector problems? D2 front and D9 rear light leak.
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