RHESSI Tohban report, 19-Mar-2008 to 26-Mar-2008
Hugh Hudson, hhudson@ssl.berkeley.edu

1. Solar Activity

Stimulated no doubt by having an expert RHESSI tohban on duty, the Sun
produced a fine M-class flare that RHESSI has coverage for. This is from
a new old-cycle region, 10989, at S10.

2. Memory management

Decimation is always NORMAL/ACTIVE. SSR varies between ~28% (max) to ~5% 
(min, at end of passes for the day).

3. Data Gaps

The QL data were more than two days behind at start of business today.

4. MISC:

a) Rear antenna turn-on produced a broad-band spike (ie, across all the QL
channels). I had not seen this behavior before. See 20-Mar-08 22:40.

b) RHESSI sees a rear-segments event in multiple detectors 20-mar-08 11:50,
but there is no GCN for this one. Is it terrestrial? It's really bright.

c) There is a slower example of this at 20-mar-08 18:45, so the answer to
question (b) is probably "yes".

d) A *real* GRB at 19-mar-08 12:26 (= 080319C)

e) A near miss (monitor rates only) for a big GRB 19-mar-08 06:12 (= 080319B).
Nevertheless this is perhaps enough to set a RHESSI record for GRBs per day.

f) Lots of bad data from 22-mar-08 04:00, associated with an (apparent?) 
shutter motion. Lasts for about an hour.

5. Next Tohban: Albert Shih