TailCutsDataVolumeReducer¶

class ctapipe.image.reducer.TailCutsDataVolumeReducer(**kwargs: Any)[source]¶

Reduce the time integrated shower image in 3 Steps:

Select pixels with tailcuts_clean.
Add iteratively all pixels with Signal S >= boundary_thresh with ctapipe module dilate until no new pixels were added.
Adding new pixels with dilate to get more conservative.

Attributes

image_extractor_type: String: Name of the image_extractor to be used.
n_end_dilates: IntTelescopeParameter: Number of how many times to dilate at the end.
do_boundary_dilation: BoolTelescopeParameter: If set to ‘False’, the iteration steps in 2) are skipped and normal TailcutCleaning is used.

Attributes Summary

`do_boundary_dilation`	If set to ‘False’, the iteration steps in 2) are skipped andnormal TailcutCleaning is used.
`image_extractor_type`	Name of the ImageExtractor subclass to be used.
`n_end_dilates`	Number of how many times to dilate at the end.

Methods Summary

select_pixels(waveforms[, tel_id, …])

Abstract method to be defined by a DataVolumeReducer subclass.

Attributes Documentation

do_boundary_dilation¶: If set to ‘False’, the iteration steps in 2) are skipped andnormal TailcutCleaning is used.

image_extractor_type¶: Name of the ImageExtractor subclass to be used. The name of a ImageExtractor subclass. Possible values: [‘FullWaveformSum’, ‘FixedWindowSum’, ‘GlobalPeakWindowSum’, ‘LocalPeakWindowSum’, ‘SlidingWindowMaxSum’, ‘NeighborPeakWindowSum’, ‘TwoPassWindowSum’, ‘FlashCamExtractor’, ‘BaselineSubtractedNeighborPeakWindowSum’]

Methods Documentation

select_pixels(waveforms, tel_id=None, selected_gain_channel=None)[source]¶

Abstract method to be defined by a DataVolumeReducer subclass. Call the relevant functions for the required pixel selection.

Parameters

waveforms: ndarray: Waveforms stored in a numpy array of shape (n_pix, n_samples).
tel_id: int: The telescope id. Required for the ‘image_extractor’ and ‘camera.geometry’ in ‘TailCutsDataVolumeReducer’.
selected_gain_channel: ndarray: The channel selected in the gain selection, per pixel. Required for the ‘image_extractor’ in ‘TailCutsDataVolumeReducer’.

Returns