Here I compare an event list CTI corrected with acis_process_events to a version CTI corrected with the IDL code with the temperature dependence set to zero (should be identical).
Percent of Flight Grades and PHAs Correct
| Obsid | Source | Mode | Fltgrade | PHA |
| 6050 | 1E0102 on I3 | VFAINT | 100% | 100% |
| 57036 | ECS 012357 | FAINT | 100% | 99.9982% |
| 10098 | G18.95-1.1 on ACIS-I | VFAINT | 100% | 99.9991% |
| 11713 | Abell 426 on ACIS-I, S2-3 | FAINT | 100% | 99.9993% |
The small percentage of PHAs that are not correct differ by only +/- 1.
Focal plane temperature:
PHA for G02346 events with different CTI corrections:
Focal plane temperature:
PHA for G02346 events with different CTI corrections:
Focal plane temperature:
PHA for G02346 events with different CTI corrections:
Fits to ECS lines:
| CCD / location | Line* | Centroid: Energy (keV) | Centroid: PHA (ADU) | ||||
|---|---|---|---|---|---|---|---|
| a_p_e | tcticorr | difference | a_p_e | tcticorr | difference | ||
| I3, node 3, top 64 rows | Al K-alpha | 1.44+-0.02 | 1.52+-0.02 | +0.08 (5.5%) | 369+-5 | 388+-5 | +19 (5.1%) |
| Mn K-alpha | 5.78+-0.01 | 5.90+-0.01 | +0.12 (2.0%) | 1478+-4 | 1512+-4 | +34 (2.3%) | |
| S3, node 0, middle 64 rows | Al K-alpha | 1.494+-0.006 | 1.493+-0.007 | -0.001 (0.07%) | 330+-1 | 330+-1 | 0 |
| Mn K-alpha | 5.906+-0.006 | 5.894+-0.006 | -0.012 (0.20%) | 1320+-1 | 1317+-1 | -3 (0.23%) | |