Tohban Report 2014-05-14

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Tohban Reports
Start Date: 7 May 2014
End Date: 14 May 2014
Tohban: Juan Carlos Martinez Oliveros (Vice Tohban: Albert Shih)
Tohban email:
Next Tohban: Lindsay Glesener (Vice Tohban: Sam Krucker)
List all reports


Solar Activity

Solar activity this week was low. There are currently 10 active regions on the disk. Farside monitoring shows an active region that may rotate into the disk in the following day.

How many GOES flares occurred?

 Flares above B, C, M, X class were      1    36     2     0

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

 Flares above B, C, M, X class were      1    26     1     0

And how many had EXCELLENT coverage?

 Flares above B, C, M, X class were      1    13     0     0

There were RHESSI flares/GOES flares 205 / 39 over the time range 07-May-14 14-May-14

Memory Management

The SSR was not emptying by the end of the daily pass set, reaching a maximum of 41% and a minimum of 10%.

The decimation was changed on 2014 May 12 from normal/vigorous to active/vigorous.

Spacecraft Status

The cold plate 1 and 2 are at 117.2 K and 115.8 K respectively.

Data Gaps

No data gaps this week

Detector issues

Detector 8 rear lifetime sharply decreased on 2014 May 9-10. The detector HV was drop by 10 counts.

Detector 4 rear threshold was changed from 0x70 to 0x80

Detector 4 also presented a strange noise on 2014 May 10 at about 22:40.

Other notes

Some anomalies were reported this week. First the state of health reports were saturated for 50 minutes due a ITOS system crash on Monday. The TLE system was stalled during the weekend, which caused dropouts during high elevations passes. All the data were replayed. The thin shutter was in between 2014 May 13 at 22:09 and 2014 May 14 at 01:11, this issue is being investigated.

Spacecraft Management

No operations this week

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 Active
Detector problems? 4, 8
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