| Observation ID | Sequence Number | Target Name | Observation Date | Public Date | Observer | Aimpoint RA (deg) | Aimpoint DEC (deg) | Aimpoint Roll (deg) |
| 5171 | 790091 | Mkn 421 | 2004-07-13 17:20:44 | 2004-07-16 20:19:11 | Dr. CXC Calibration | 166.112690 | 38.229818 | 274.576237 |
| Instrument | Gratings | Detector | Observation Mode | Data Mode | Read Mode | Exposure Time (s) | Defocus (mm) | Focal Length (mm) | Sim X | Sim Z |
| ACIS | LETG | ACIS-456789 | POINTING | FAINT | TIMED | 63877.49 | 0.00144494 | 10070.000 | -0.682823 | -178.634559 |