Tohban Report 2009-04-15

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Tohban Reports
Start Date: 8 Apr 2009
End Date: 15 Apr 2009
Tohban: Pascal Saint-Hilaire
Tohban email:
Next Tohban: Lindsay Glesener
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Solar Activity

The Sun was pretty featureless throughout the week. GOES 1-8A was flat. GOES 0.5-4 showed weak signs of life (~A0.6 level) for a few days.

Because of this tiny activity, and because recent 10.7cm flux measurements seem to trend upwards (Cycle 24 - don't panic yet!), Hugh proposed on Monday morning to off-point, in order to try getting an X-Ray reading from RHESSI. Jeremy promptly obliged on 09-104-14:34:04 UT: "The attenuator logic was disabled and the crab decimation scheme was set. We are still collecting front segment data during the eclipse so no changes have been made in that regard. All operations went nominally." We should stay off-pointing for 7-10 days.

See some solar indices:

plot of solar indices
plot of solar indices

Memory Management

Decimation: Crab mode SSR fill level: crept up to 40% on April 9th,10th & 11th. Now between 10 and 35%.

Data Gaps

GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30 N_GAPS 2 GAP START TIME GAP END TIME GAP (SEC) 2009-04-07T13:20:00.000 -- 2009-04-07T13:25:00.000 300.00000 2009-04-07T16:10:00.000 -- 2009-04-07T16:40:00.000 1800.0000


Cold Plate 2 at 97.5 K. Spin rate at 14.5 rpm: spin up will occur after we return to Sun-pointing, as the smaller angular momentum makes the S/C easier to maneuver.

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