Muon Image Analysis

Algorithms for detecting and characterizing muon images

Reference/API

ctapipe.image.muon Package

Functions

kundu_chaudhuri_circle_fit(x, y, weights)	Fast and reliable analytical circle fitting method previously used in the H.E.S.S.
mean_squared_error(pixel_x, pixel_y, ...)	Calculate the weighted mean squared error for a circle
intensity_ratio_inside_ring(pixel_x, ...)	Calculate the ratio of the photons inside a given ring with coordinates (center_x, center_y), radius and width.
ring_completeness(pixel_x, pixel_y, weights, ...)	Estimate how complete a ring is.
ring_containment(radius, center_x, center_y, ...)	Estimate angular containment of a ring inside the camera (camera center is (0,0))

ctapipe.image.muon.processor Module

High level muon analysis (MuonProcessor Component)

Classes

MuonProcessor(**kwargs)

Takes cleaned images and extracts muon rings.

Class Inheritance Diagram

ctapipe.image.muon.intensity_fitter Module

Class for performing a HESS style 2D fit of muon images

To do:

• Deal with astropy untis better, currently stripped and no checks made

• unit tests

• create container class for output

Classes

MuonIntensityFitter(**kwargs)

Fit muon ring images with a theoretical model to estimate optical efficiency.

Class Inheritance Diagram

ctapipe.image.muon.ring_fitter Module

Classes

MuonRingFitter(**kwargs)

Different ring fit algorithms for muon rings

Class Inheritance Diagram