Readout Noise Pattern Model

What is the readout noise pattern?

Raw (left), the readout pattern model using median_XY_profile (middle), and its pattern-corrected image (right).

../_images/clean_pattern.png

Divide into channel cubes and eo tensor

  • channel cube:

    • The H2RG detector has 32 channels.

    • The readout direction is opposite in even and odd channels.

  • eo tensor:

    • There also exist a strong dependence of noise pattern on even or odd pixel numbers.

../_images/channelcube_eotensor.png

Create a pattern model

  • 2d-gp

  • median

  • stripe