RHESSI Tohban report, 19-Jul-2006 to 26-Jul-2006
Pascal Saint-Hilaire, shilaire@ssl.berkeley.edu

1. Solar Activity

Activity was low (from below A at the beginning of the week to A5, to A3 now),
with just one active regions on the Sun at any one time (10900 and now 10901).  
They produced several low B-flares this week. 

How many GOES flares occurred?
  Flares above B, C, M, X class were     18     1     0     0
And how many of these are listed in the RHESSI flare list?
  Flares above B, C, M, X class were      2     0     0     0
And how many had EXCELLENT coverage?
  Flares above B, C, M, X class were      2     0     0     0
 
There were RHESSI flares/GOES flares           3 /           19
over the time range 18-Jul-06 25-Jul-06


2. Memory management

BGS is still not operational, since July 9th. 
This has lead to memory management problems.
We about broke even during the week-end, but memory suddenly crept up during the night of Sunday to Monday.

With the SSR peaking at 88% on Monday, a new active region, and the fact that it would be 
good to have Crab decimation for Friday's (July 28th) joint observations with GMRT, it was decided Tuesday (25th) 
to erase some on-board data: from UT 2006-jul-23 04:00 to 2006-jul-24 14:00 (just before a C1.1 flare).

Memory is now down to 36%.
Decimation is still ACTIVE/VIGOROUS, with no front segment data taken at night.


3. Data Gaps

Aside from the UT 2006-jul-23 04:00 to 2006-jul-24 14:00 gap, there are a few orbit-long data gaps here and there during this week.
(Ex; July 20, around 08:00 UT). They are likely attributable to delays from the Waldheim ground stations.

4. Next Tohban: 

Iain Hannah