CALPRODUCT-VS-014: VIS LED Pixel Response Non-uniformity (PRNU)¶
Parent requirement¶
Scheduling¶
Once, during PV phase, and on a regular basis during the ROS.
Time-critical¶
No
Objective¶
For each LED wavelength, obtain the zero-signal PRNU, i.e. corrected for contrast reduction due to CALPRODUCT-VS-004: VIS Brighter-fatter Effect (BFE). This can be achieved by extrapolation to zero signal, and / or BFE correction.
Flag cold/dead pixels, as well as hot pixels.
Fulfilled by¶
CALBLOCK-PV-022: VIS PRNU and Brighter-fatter Effect
CALBLOCK-PV-029: VIS Photon Transfer Curve and CTI/EPER (also)
Data volume¶
Data Volume under study; compression ratio varies by a large factor depending on the fluence.
Processing input¶
Ground Processing Input Data: BPM, ground-based QE
Data Description: Flat-field and QE cubes
Processing output¶
Effective flat fields for each LED. Trend analysis
Required accuracy, constraints¶
Expected flux levels within TBD%, stable within TBD%, spatial irradiance as expected (within requirement, ground-based measurements)
Processing tools¶
OU-VIS LED PRNU Processing Element
Quality control parameters¶
DataModel: https://gitlab.euclid-sgs.uk/
Contact person¶
VIS instrument scientist