SDAST Monday Meeting #129: 19th Febuary 2007
	
	
	Instrument Status: No comments. HV step down still not performed yet.
	Crab Calibration: SB written procedure for grey filter exercises.
		Drift voltage will also be varied to investigate double
		triggers and gas contamination, and running with less
		than four anode segments. ISGRI has 100 ksecs on-axis
		staring we can use for our excercises. This time a whole
		revolution set aside for calibration procedures.
		CBJ thinks we may be running instruments with too low drift
		voltage given that we're getting double triggers. Changing
		Vc will also change position distortion which was tuned out
		pre-launch by changing voltages on field rings.
		SB found that deadtime with grey filter can be corrected with
		a simple funciton of grey filter value.
	ATELs: SB found a good radius expansion burst GRS 1724-308 OID:530
		PID: 35
		2 transient sources seen by ISGRI which can't be seen with
		JEM-X, though one is within our FOV but our of our energy
		range.
			
CAO 16/4/2007