RHESSI Tohban Report, 18-Apr-2005 to 25-Apr-2005 by Pascal Saint-Hilaire (shilaire@ssl.berkeley.edu) 1) Solar activity The Sun has been very quiet. The GOES baseline level went from ~A6 at the beginning of the week to ~A2 in the middle of the week, and has risen to the ~B1 level in the last couple of days. 3 C flares occured on the 17th. Very little activity since then. The strongest flare has been a B8. How many GOES flares occurred? Flares above B, C, M, X class were 15 4 0 0 And how many of these are listed in the RHESSI flare list? Flares above B, C, M, X class were 1 3 0 0 And how many had EXCELLENT coverage? Flares above B, C, M, X class were 1 2 0 0 There were RHESSI flares/GOES flares 7 / 19 over the time range 17-Apr-05 24-Apr-05 2) Memory management Memory space has not been a problem, and we are still taking down front-segment data at nighttime. We are missing the following web page for SOH data: http://sprg.ssl.berkeley.edu/~hessiops/state-of-health/2005/113/index.html 3) Data gaps DATA GAPS FOR 2005/04/19 TIME RANGE: 2005-04-19T00:00:00.000 -- 2005-04-20T00:00:00.000 GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30 N_GAPS 1 GAP START TIME GAP END TIME GAP (SEC) 2005-04-19T19:45:00.000 -- 2005-04-19T19:50:00.000 300.00000 3-hour long data gap: DATA GAPS FOR 2005/04/21 TIME RANGE: 2005-04-21T00:00:00.000 -- 2005-04-22T00:00:00.000 GAPS IN APP_ID = 102 (VC3-MONITOR RATES) WITH PACKET RATE LT 30 N_GAPS 1 GAP START TIME GAP END TIME GAP (SEC) 2005-04-21T05:00:00.000 -- 2005-04-21T08:10:00.000 11400.000 The VC1 data is here, but the VC3 data is still at Wallops. No problems are expected. 4) Mission-long state-of-health data: Accelerometer has been slowly varying in amplitude since beginning of year (but is still well below past levels). Detector 2,5&6 voltage has decreased, as announced last week. Otherwise, nothing special to report. 5) Operations: None. 6) Next week's tohban: Abby Goodhue