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Currently, we are lacking some useful muon parameters that are used in processing LST-1 data and can be beneficial for subsequent analysis. I think it would be good to have them in ctapipe because we will need to use them in calibpipe for the derivation of calibration coefficients. For example, such muon metrics as:
ring_size and size_outside - the sum of the photoelectrons in the ring area, defined as a region dist_mask = (R-0.25R; R+0.25R), and outside of it.
mean_pixel_charge_around_ring - average pixel charge in pixels surrounding the outer part of the ring
radial_stdev - standard deviation of (cleaned) light distribution along ring radius
radial_skewness - skewness of (cleaned) light distribution along ring radius
radial_excess_kurtosis - excess kurtosis of (cleaned) light distribution along ring radius
num_pixels_in_ring - number of pixels in the integration area dist_mask
Taking the above into account, I would like to:
Add methods for calculating these parameters to the module ctapipe.image.muon.features (following already implemented functionality in the lstchain).
Add appropriate fields to the MuonParameterContainers to store the new parameters.
Implement calculation of these parameters inside MuonProcessor._calculate_muon_parameters()
Please comment in case something is missing or we should follow other direction. Otherwise I can start to create corresponding PRs and implement these features.
The text was updated successfully, but these errors were encountered:
ring_size and size_outside - the sum of the photoelectrons in the ring area, defined as a region dist_mask = (R-0.25R; R+0.25R), and outside of it.
We have something that is closely related: intensity_ratio_inside_ring:
Thanks for the comment, indeed this intensity_ratio_inside_ring looks good to isolate pure muon ring events apart from contaminated rings, which can currently partially be done by parameter size_outside in lstchain.
But apart from this, we still will need ring_size parameter for some of the optical_efficiency studies.
Currently, we are lacking some useful muon parameters that are used in processing LST-1 data and can be beneficial for subsequent analysis. I think it would be good to have them in
ctapipe
because we will need to use them incalibpipe
for the derivation of calibration coefficients. For example, such muon metrics as:ring_size
andsize_outside
- the sum of the photoelectrons in the ring area, defined as a regiondist_mask
= (R-0.25R; R+0.25R), and outside of it.mean_pixel_charge_around_ring
- average pixel charge in pixels surrounding the outer part of the ringradial_stdev
- standard deviation of (cleaned) light distribution along ring radiusradial_skewness
- skewness of (cleaned) light distribution along ring radiusradial_excess_kurtosis
- excess kurtosis of (cleaned) light distribution along ring radiusnum_pixels_in_ring
- number of pixels in the integration areadist_mask
Taking the above into account, I would like to:
ctapipe.image.muon.features
(following already implemented functionality in thelstchain
).MuonParameterContainers
to store the new parameters.MuonProcessor._calculate_muon_parameters()
Please comment in case something is missing or we should follow other direction. Otherwise I can start to create corresponding PRs and implement these features.
The text was updated successfully, but these errors were encountered: