Tohban Report 2009-07-01

Tohban Reports
Start Date:	24 June 2009
End Date:	1 July 2009
Tohban:	Meriem Alaoui
Tohban email:	meriem@ssl.berkeley.edu
Next Tohban:	Amir Caspi
List all reports

Solar Activity

Very low activity level. Flat GOES flux except for a long-duration A class flare June 29. AR 11022 disappeared on the west limb June 29 and AR 11023 is still visible.A new region has rotated onto the disk on the eastern limb. The position of the new region on 30-Jun-2009 is S25E62 ( -757", -419" ).

Memory Management

SSR goes to 0% at the end of the daily pass set (max 25%). Decimation was normal/active for the week.

Spacecraft operations

Detector G8 has been lowered by 6 steps and detector G1 by 4 steps this morning as requested by David Smith. The exact times for these operations are

09-182-16:50:59 /IHVDAC DETECTOR=1, VOLTAGE=170 (3308.9 V)

09-182-16:51:18 /IHVDAC DETECTOR=8, VOLTAGE=101 (1960.8 V)

Current cold plate temperature 98.14K

Data gaps

Minor gaps in VC1-SOH

TIME RANGE: 2009-06-27T00:00:00.000 -- 2009-06-28T00:00:00.000
GAPS IN APP_ID = 1 (VC1-SOH) WITH PACKET RATE LT 30
N_GAPS           3
GAP START TIME              GAP END TIME                   GAP (SEC)
2009-06-27T06:20:00.000 -- 2009-06-27T06:25:00.000       300.00000
2009-06-27T08:40:00.000 -- 2009-06-27T08:50:00.000       600.00000
2009-06-27T14:35:00.000 -- 2009-06-27T14:40:00.000       300.00000

No gaps in VC1-PMTRAS and VC3-Monitor rates.

Misc.

RHESSI recorded a GRB on June 26 at ~04:32 UT in the energy band 25-800keV. It was also observed up to 100MeV by LAT/FERMI. Here are RHESSI lightcurves in 25-200keV and 200-800keV energy bands.

RHESSI lightcurves

More lightcurves can be found link title

The GRB location can be found in [1]