Time-walk Correction: Constructing LUT
======================================

While luna does this for you when you choose the ctot-cut parameter
you may also compute the lookup table yourself. The method is basically
computing averages of each ToT value for each cToT above a certain threshold.
This threshold is the ctot-cut parameter.

In this example we also fit the lookup table to an equation that models the
shape of the curve.

.. note::

    Parameter fitting can be unstable. It is also fine to the use values as-is, without curve fitting.


Luna Command
------------

.. literalinclude:: ../_static/examples_output/ex9_timewalk_lut_construction_luna_command.txt
   :language: bash

Python Script
-------------

.. literalinclude:: ./python/ex9_timewalk_lut_construction.py
   :language: python
   :caption: Creating a lookup table from the Timewalk Matrix
   :linenos:

Script Output
-------------

.. literalinclude:: ../_static/examples_output/ex9_timewalk_lut_construction.txt
   :language: python
   :caption: Example Output


.. image:: ../_static/examples_output/plots/ex9_timewalk_lut_construction.png
   :align: center
   :alt: 2D histogram of clusters
   :width: 80%