RHESSI Tohban report, 12-Apr-2004 to 19-apr-2004 Andre Csillaghy csillag@fh-aargau.ch 1. Solar Activity This week mainly four regions on the sun were active, 591-594. Flaring activity however was low, with the notable exception of a short M1.2 flare on Apr-15 at 16:37 (the tax-day flare?). It has been entirely covered by RHESSI. How many GOES flares occurred? Flares above B, C, M, X class were 31 7 1 0 And how many of these are listed in the RHESSI flare list? Flares above B, C, M, X class were 5 6 1 0 And how many had EXCELLENT coverage? Flares above B, C, M, X class were 4 5 1 0 There were RHESSI flares/GOES flares 29 / 39 over the time range 11-Apr-04 18-Apr-04 2. Decimation Normal/Normal all week. 3. Memory Management Starting at about 20%, now at about 25% with minimum at ~0% and maximum at 40%. 4. Data Gaps The quicklook processing work as expected again. There is no latency longer than expected any more. There are two minor data gaps on 2004/04/16 in the vc1 and monitor rates packet, probably due to bad packets at the end of a Wallops pass. 5. ADP stopping monitoring Note from Hugh: There had been trouble a couple of weeks ago that resulted in the ADP stopping. Now there is a new entry on the status page that Manfred has installed so that we can keep an eye on this. The new entry is named: State of Health Packet Counter 6. Crab rehearsal Rehearsal for upcoming Crab observations were performed on Friday. The rehearsal went fairly well, but probably an additional one will be performed after the JOP172 (see below). 7. JOP 172 Proparation for the program "Coordinated Observations of Micro-Events in the Quiet Solar Corona" were going on. It will involve TRACE and CDS. It will start this Wed 21st. These joint observations will not require any specific action from the RHESSI side. 6. Miscellaneous The state-of-health page of Apr 16 http://sprg.ssl.berkeley.edu/~hessiops/state-of-health/2004/107/index.html is missing as of Monday Apr 19 7. Tohban Richard Schwartz is the thoban for Apr-19 to Apr-26.