RHESSI Tohban report, 05-Jan-2006 to 11-Jan-2006
Albert Shih, ayshih@ssl.berkeley.edu

1. Solar Activity

Solar activity was extremely low after some activity on January 5.
Current GOES baseline is A0.4.

How many GOES flares occurred?
  Flares above B, C, M, X class were     11     1     0     0
And how many of these are listed in the RHESSI flare list?
  Flares above B, C, M, X class were      1     1     0     0
And how many had EXCELLENT coverage?
  Flares above B, C, M, X class were      1     0     0     0
  
There were RHESSI flares/GOES flares          15 /           12
over the time range 03-Jan-06 10-Jan-06

2. Memory Management

The SSR level is slowly decreasing.  Once we are fully caught up, we may
want to decrease the decimation level from active/vigorous or start
taking front-segment events during eclipse.

3. Data Gaps

There were two data gaps that appear to be due to late acquisitions at
BGS.  The cause is not currently known.

GAP START TIME              GAP END TIME                   GAP (SEC)
2006-01-08T09:05:00.000 -- 2006-01-08T09:45:00.000       2400.0000
2006-01-08T12:45:00.000 -- 2006-01-08T13:00:00.000       900.00000

4. Attenuators

At ~2335 UT on January 4, the science table was changed to use detector
9 instead of detector 6 in the livetime calculation for the attenuator
logic.  The same behavior was observed where the livetime was interpreted
as being 75%, and both the thin and thick shutters were brought in.  The
previous settings were restored and the shutters were taken out before
the pass ended. 

Because detector 6 was still included in the livetime calculation for the
remainder of the week, there were still periods of time when the thin
shutter was brought in but not taken out for hours:

05-Jan-06 05:50:48 to 05-Jan-06 17:11:16
06-Jan-06 08:59:00 to 06-Jan-06 16:50:24
09-Jan-06 03:50:56 to 09-Jan-06 13:10:52

5. Future Operations

Due to low solar activity, we will begin acquiring more off-pointing
data.

6. Next Tohban: Hugh Hudson