[to complete] NIR Bad Pixel Mask

Metadata

Data product name

DpdNirBadPixelMask

Data product custodian

NIR

Name of the Schema file

euc-nir-BadPixelMask.xsd

Processing Element(s) creating/using the data product

The Bad Pixel Mask is created by makeNirBadPixels task in NIR_BadPixelMasking project.

It creates a mask for the bad pixels in the near-infrared detectors. It makes a list of bad pixels based on the detector data obtained from GFSC, which consists of test data with dis-connected pixels, zero-fluence pixels, and noisy pixels.

It combines a set of [to complete] NIR Bad Pixel Flavor Mask to create the final NIR Bad Pixel Mask.

Processing function using the data product

This is an internal NIR data product, and it is used only by the NIR PF.

It is applied by maskBadpixels task (under NIR_BadPixelMasking project) in the NIR_ProcessField_Pipeline and in most of the calibration pipelines.

Data Product structure description

The main elements inside the Data section are:

  • ValidityRange: Calibration file validity period estimated

  • DataStorage: Element that links to a FITS file containing the Bad Pixel Mask FITS file

  • QualityParams (optional): List of Detector Data Quality Parameters

    • DetectorId: Detector id

    • TotalBadPixels: Total number of bad pixels (NBADPIXT)

    • DisconnettedBP: Number of disconnected pixels (NBADPIX1)

    • ZeroQEBP: Number of Zero Quantum Efficiency pixels (NBADPIX2)

    • RTNoiseBP: Number of pixels detected with RTN (NBADPIX3)

    • SnowballingBP: Number of snowballing pixels (NBADPIX4)

    • HotBP: Number of Hot pixels (NBADPIX5)

    • HLBaselineBP: Number of High-Low baseline pixels (NBADPIX6)

    • LowQEBP: Number of Low Full Well pixels (NBADPIX7)

    • SuperQEBP: Number of Super Quantum Efficiency pixels (NBADPIX8)

The Quality Parameter section tracks the number of single flavor pixels, propagating information stored in [to complete] NIR Bad Pixel Flavor Mask used for Bad Pixel Mask creation.

FITS file description

The Bad Pixel Mask FITS file is composed by a Table to store bad pixels coordinates in pixel and the corresponding flag value to be used.

Primary header

The primary header contains keywords to identify FITS data type and validity range.