Tohban Report 2015-12-09

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Tohban Reports
Start Date: 2 Dec 2015
End Date: 9 Dec 2015
Tohban: Juan C. Martinez Oliveros
Tohban email:
Next Tohban: Mitsuo Oka
List all reports


Solar Activity

Solar activity was low this week, with some C-class flares during the week. There are currently 5 ARs on the disk with the probability of some C class flares in the following days.

How many GOES flares occurred?

 Flares above B, C, M, X class were     19     8     0     0

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

 Flares above B, C, M, X class were     10     5     0     0

And how many had EXCELLENT coverage?

 Flares above B, C, M, X class were      7     1     0     0

There were RHESSI flares/GOES flares 56 / 27 over the time range 02-Dec-15 09-Dec-15

Memory Management

The SSR fill level reached a maximum of ~40% and a minimum of about ~3% during the week.

Spacecraft Status

The cold plate 1 and 2 are at about ~133.4 K and ~132.0 K respectively.

Data Gaps

No data gaps this week.

Detector issues

Detector 4 ULDs under control: The HV on detector 4 was lowered to 1500V, which made an effect lowering the ULD rates.

Detector 3 elevated slow rates: Detector 3 HV was lowered to 1000V to decrease the slow front rates. The change did not have an immediate effect, however after a couple of days the slow front rates decrease significantly. It is not clear if the HV made that change to happen.

Detector 6 HV was lowered to 1000V to decrease the observed noise. The slow front threshold on detector 7 was change to 0x20.

Detector 6 slow front threshold was not change as we are waiting to see the impact of detector 7 change in the SSR.

Other notes

Spacecraft Management

A spin up was made on was done this week.

Decimation Active/Vigorous
Night time data (fronts) +- 4 minutes
Night time data (rears) +- 4 minutes
Require extra passes? No
Requirement for moving pointer? No
Attenuator operation See above
Thin Att. in 11%
Thin Att. out 7.45%
Thick Att. in 12.9%
Thick Att. out 7.84%
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