kai.reduce.lin_correction
=========================

.. py:module:: kai.reduce.lin_correction


Functions
---------

.. autoapisummary::

   kai.reduce.lin_correction.lin_correction


Module Contents
---------------

.. py:function:: lin_correction(file, instrument=instruments.default_inst)

   
   Perform linearity correction on input file, as defined below

   x = (FITS_orig) / (No. of coadds)

   Normalization is defined as a polynomial in the following way:
   norm = coeffs[0] + (coeffs[1] * x) + (coeffs[2] * x^2) + ... + (coeffs[n] * x^n)

   FITS_corrected = FITS_orig / norm

   :Parameters:

       **file** : str
           File path of FITS file to perform linearity correction

       **instrument** : instruments object, optional
           Instrument of data. Default is `instruments.default_inst`














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