obsid   target                  start time      int time    inst    ccd     grat    drop rate(%)
-----------------------------------------------------------------------------------------------------------
2001	CRAB_NEBULA         	30:86278.288		25.2	ACIS-S	S1		NONE	38.5
1995	CRAB_NEBULA         	52:12605.277		26.2	ACIS-S	S1		NONE	38.2
1997	CRAB_NEBULA         	73:27578.378		24.9	ACIS-S	S1		NONE	39.1
2062	NGC_4314            	92:71618.380		16.5	ACIS-S	I6		NONE	3.4
2000	CRAB_NEBULA         	96:20100.513		26.1	ACIS-S	S1		NONE	38.2
2042	ARP_270             	118:11435.201		 6.1	ACIS-S	I6		NONE	9.7
1548	CAS_A,_S3,_AO2B     	194:17365.466		 2.0	ACIS-S	S6		NONE	9.0
1546	CAS_A,_I3,_AO2B     	194:37252.393		 2.0	ACIS-I	I6		NONE	4.7
2099	LBQS_0021-0213      	232:14634.778		 8.5	ACIS-S	I6		NONE	8.0
1022	NGC6624             	255:80676.591		11.4	ACIS-S	S6		HETG	12.0
2010	PSR0628-28          	308:61201.053		 2.2	ACIS-S	I6		NONE	27.2
3152	PSS0133+0400        	330:66978.949		 7.8	ACIS-S	I6		NONE	7.1