Combination of several scripts that lead to computation of a chi-square at LHAASO or HAWC for an accumulation of extragalactic galaxies

I. Folders
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Host_Galaxy	Contains the script that generates the accumulated flux from extragalactic galaxies
Milky_Way	Contains the scripts that propagate photons and ALPs through the Milky Way
Parameters	User defined parameters like energy, flux and galaxy models
Predictions	Contains the script that generates the statistical sensitivity to an ALP flux