Chandra X-Ray Observatory
Last modified: 7 September 2018

Dead Time

X-ray detectors may not be active for the full observation - e.g. the 41 ms transfer time for ACIS in timed-exposure mode and the rate-dependant sensitivity of the HRC - which is referred to as the dead time for the observation.

The DTCOR header keyword represents the dead-time correction used for a particular observation.

Last modified: 7 September 2018
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