| Chandra X-ray Center | 	PI: Dr. CXC Calibration  | 
| Parameter | Value | Description | 
|---|---|---|
| ASCDSVER | 7.6.9 | ASCDS version number | 
| DATE | 2006-11-15T17:01:20 | Date and time of file creation | 
| DATE-OBS | 2001-03-18T09:39:41 | Observation start date | 
| DATE-END | 2001-03-18T12:57:13 | Observation end date | 
| RA_PNT | 278.39100907669 | Pointing RA | 
| DEC_PNT | -10.54764578665 | Pointing Dec | 
| ROLL_PNT | 91.187547707605 | Pointing Roll | 
| RA_TARG | 278.389583 | Observer's specified target RA | 
| DEC_TARG | -10.568528 | Observer's specified target Dec | 
| DATAMODE | VFAINT | Data mode | 
| READMODE | TIMED | Read mode | 
| FP_TEMP | 153.2848053 | Focal Plane Temperature [K] | 
| FSW_VERS | 30 | ACIS flight software version number | 
| Parameter | Value | Description | 
|---|---|---|
| ASCDSVER | 7.6.9 | ASCDS version number | 
| DATE | 2006-11-15T17:25:22 | Date and time of file creation | 
| DATE-OBS | 2001-03-18T09:39:41 | Observation start date | 
| DATE-END | 2001-03-18T12:57:13 | Observation end date | 
| INSTRUME | ACIS | Instrument | 
| DETNAM | ACIS-7 | Detector | 
| GRATING | NONE | Grating | 
| OBJECT | G21.5-0.9 [Chip S3, T=120, Offsets=-1,0,0] | Source name | 
| TITLE | CALIBRATION OBSERVATIONS OF THE STANDARD CANDLE G21.5-09 | Proposal | 
| OBSERVER | Dr. CXC Calibration | Principal investigator | 
| OBS_ID | 1553 | Observation id | 
| SEQ_NUM | 590162 | Sequence number | 
| RA_NOM | 278.39100907669 | Nominal RA | 
| DEC_NOM | -10.54764578665 | Nominal Dec | 
| ROLL_NOM | 91.187547707605 | Nominal Roll |