Read Noise and Dark Current Monitoring
Abstract
This activity will obtain calibration data for all three MIRI detectors early in Cycle 1 to address three issues that will set the ultimate sensitivity limit for MIRI: read noise, dark current, and the reset anomaly, including the non-ideal behavior of individual integration ramps caused by the reset. All three effects require reference files for each detector in the JWST calibration pipeline. The data will also be used to flag hot, dead, and high-noise pixels for the bad-pixel mask. The activity will produce a full suite of data including simultaneous data from the full imager detector and the two MRS detectors with the contamination control cover (CCC) closed and data in all of the available subarrays except SLITLESSPRISM with the CCC open.
This calibration program is provisional and may change in response to system developments and the final science program.- Publication:
-
JWST Proposal. Cycle 1
- Pub Date:
- October 2019
- Bibcode:
- 2019jwst.prop.1517M