RHESSI Tohban Report, 1-apr-2003 to 7-apr-2003

Hugh Hudson, hhudson@ssl.berkeley.edu


(1) Solar Activity:

We had a spurt of activity, including an M1.9 event on April 4.  RHESSI
observed the rise to peak.  There were also many (>47) C-class flares,
for which RHESSI got a fair fraction. The activity was highly
flare-like (ie, events packed together); then subsided into a steady
background level punctuated by occasional events. Thus the two kinds of
active-region heating were well illustrated.

(2) Attenuators:

The attenuators remained in autonomous mode all week.  The daily average
state of the thin shutter was on the order of 1.02 (1 is open, 2 is
closed). Jim McTiernan's weekly SOH summary plot shows these daily values.

(3) Memory Management/Decimation tables:

Because of the increased activity just at the end of the week, we
increased the decimation level to T4 April 5, 01:00 UT, and expect
to bring it back to T3 on the first pass today (April 7, 23:11 UT).
SSR usage peaked at about 54% during the spurt of activity.

(4) Data Gaps: 

There were no known intentional data gaps.

(5) Tohban:

The bearer of the beeper will be Martin Fivian next week.