Readout Noise Pattern Model
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What is the readout noise pattern?
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Raw (left), the readout pattern model using ``median_XY_profile`` (middle), and its pattern-corrected image (right).

.. image:: ../figures/clean_pattern.png

Divide into `channel cubes` and `eo tensor`
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- 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.

.. image:: ../figures/channelcube_eotensor.png

Create a pattern model
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- 2d-gp
- median
- stripe