RHESSI Tohban report, 11-Jan-2006 to 18-Jan-2006 Hugh Hudson, hhudson@ssl.berkeley.edu 1. Solar Activity Solar activity was extremely low at the beginning of the week, inspiring the quiet-Sun offpoint described below, but weak activity returned. The GEV database looks odd so the standard flare-counting software did not work, but there were several B-class events and one C1 flare on 16-Jan. 2. Memory Management Because of the offpoint and the conditions set for quiet-Sun data, the SSR content slowly grew during the offpoint, exceeding 60% at the end. It is now slowly decreasing and should be near 40% at end of BGS passes today. 3. Offpoint Low activity led to a decision to do quiet-Sun observations via the "taildragging" mode. This was initiated 21:40 UT 12-Jan and ended about 20:00 17-Jan. The last two days of this were wasted because activity returned during the 3-day weekend. We need to learn how to start and stop the offpoints more efficiently in order to avoid such losses. The solar conditions during the first part of the offpoint looked like true solar minimum, and we expect that we'll get longer such intervals as the cycle groans on. 4. Data survey * GRB at 11-Jan 08:48 (= HETE 3999) visible to 800 keV * GRB at 17-Jan 06:50 (= GCN 4533) visible to 100 keV We had many long intervals with false shutter motions * Erratic shutter motion 11-Jan 12:16 - 13:07 * Erratic shutter motion 12-Jan 09:05 - 16:26 * Erratic shutter motion 13-Jan 03:08, A3 at 05:53 (looks like multiple detectors) - 07:04 - 14:48 5. Data Gaps 2006-01-15T01:05:00.000 -- 2006-01-15T03:00:00.000 6900.0000 2006-01-15T13:55:00.000 -- 2006-01-15T14:15:00.000 1200.0000 6. Next Tohban: