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| Bit | Test | (Decimal) Value | Use On... | Bit | Test | (Decimal) Value | Use On... | |
|---|---|---|---|---|---|---|---|---|
| 26 | Event from Next in Line Mode | 67108864 | I and S | |||||
| 25 | No Trigger (V axis) | 33554432 | I and S | 24 | No Trigger (U axis) | 16777216 | I and S | |
| 23 | Outside of defined range (V axis) | 8388608 | 22 | Outside of defined range (U axis) | 4194304 | |||
| 21 | Width (V axis) | 2097152 | I only | 20 | Width (U axis) | 1048576 | I and S | |
| 19 | Antico Shield Active | 524288 | I and S | |||||
| 17 | Above ULD | 131072 | 16 | Below LLD | 65536 | |||
| 15 | Event in Bad Region | 32768 | I and S | 14 | Amplifier Sum <= 0 in either axis | 16384 | I and S | |
| 13 | Bad Center (V axis) | 8192 | I and S | 12 | Bad Center (U axis) | 4096 | I and S | |
| 11 | Ratio of PHA to Amplifier Sum | 2048 | I and S | 10 | PHA=0 | 1024 | I and S | |
| 9 | Ratio of V to U Amplifiers | 512 | I and S | 8 | Amplifier Sum | 256 | I and S | |
| 7 | PI>255 | 128 | 6 | Time Tag Out of Sequence | 64 | I and S | ||
| 5 | Flatness Test (V axis) | 32 | I and S | 4 | Flatness Test (U axis) | 16 | I and S | |
| 3 | Saturation Test (V axis) | 8 | I and S | 2 | Saturation Test (U axis) | 4 | I and S | |
| 1 | H-test (V axis) | 2 | I only | 0 | H-test (U axis) | 1 | I only |
Contact CXC Calibration (cxccal@cfa.harvard.edu) for further information
Last modified:09/27/12
 |
The Chandra X-Ray
Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA. Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2004. All rights reserved. |