Tohban Report 2013-05-08

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|tohban_name = Lindsay Glesener
|tohban_name = Lindsay Glesener
|tohban_email = glesener@ssl.berkeley.edu
|tohban_email = glesener@ssl.berkeley.edu
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|next_tohban  = TBA
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|next_tohban  = Hazel Bain
}}
}}
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== Memory Management ==
== Memory Management ==
-
 
+
The SSR is emptying at the end of each pass set and reached a max of 27%.
== Spacecraft Status ==
== Spacecraft Status ==
 +
The spin rate is down to 14.6 rpm, so it's time for a spin up, which will probably happen today.
 +
 +
There was a spin rate snafu on May 3/4.  Occasionally the magnetic field configuration is such that the ACS system does not sense any change in magnetic field as it spins, thinks something is wrong, and after a timeout period (5 min) goes into IDLE mode.  This problem happens (usually a few occurrences close together) about once a year or so.  The ACS system was commanded back to precession mode on the next available pass.  No ill effects remain.  Here are the sequence of events:
 +
 +
*2013-123-16:11 - ACS system went into IDLE mode due to spin rate
 +
miscalculation.
 +
*2013-124-02:08 - Ground command to precession mode
 +
*2013-124-03:42 - Autonomously transitioned back to Normal mode.
== Data Gaps ==
== Data Gaps ==
-
There was no data gap this week.  
+
There were no data gaps this week.  

Revision as of 19:34, 8 May 2013


Tohban Reports
Start Date: 01 May 2013
End Date: 08 May 2013
Tohban: Lindsay Glesener
Tohban email: glesener@ssl.berkeley.edu
Next Tohban: Hazel Bain
List all reports



Contents

Solar Activity

There was a decent amount of activity this week, at least compared to recent months. There are currently 8 active regions on the disk. The most active this week was AR 11739, which spit out an M5 flare just after rotating onto the disk (on the 3rd) and many more C-flares with an occasional M in the days following. It's now in the center of the disk but has decayed significantly, so is no longer so active. I would expect that solar activity will continue at its current level (occasional C flares, nothing big).

How many GOES flares occurred?

 Flares above B, C, M, X class were      7    61     4     0

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

 Flares above B, C, M, X class were      5    39     4     0

And how many had EXCELLENT coverage?

 Flares above B, C, M, X class were      4    24     3     0

There were RHESSI flares/GOES flares 380 / 72


Memory Management

The SSR is emptying at the end of each pass set and reached a max of 27%.

Spacecraft Status

The spin rate is down to 14.6 rpm, so it's time for a spin up, which will probably happen today.

There was a spin rate snafu on May 3/4. Occasionally the magnetic field configuration is such that the ACS system does not sense any change in magnetic field as it spins, thinks something is wrong, and after a timeout period (5 min) goes into IDLE mode. This problem happens (usually a few occurrences close together) about once a year or so. The ACS system was commanded back to precession mode on the next available pass. No ill effects remain. Here are the sequence of events:

miscalculation.


Data Gaps

There were no data gaps this week.


Detector issues

Other notes

Spacecraft Management

Decimation Normal/vigorous
HLAT Decimation Rear decimation weight 6, no front decimation
Night time data (fronts) +/- 4 minutes
Night time data (rears) Taking data at nights
Require extra passes? No
Requirement for moving pointer? No
Attenuator operation Normal
Detector problems? No
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