Camera Readout¶
The CameraReadout
stores information regarding the waveform readout from the
Cherenkov camera, such as sampling rate and information on the reference pulse
shape.
There are several ways to obtain a CameraReadout
:
Through the
SubarrayDescription
of anEventSource
use the
CameraReadout
constructor, where one has to specify all necessary informationuse
CameraReadout.from_name(telescope, revision)
(ex:readout = CameraReadout.from_name('HESS', 1)
). This tries to read the corresponding data from through the service data utilities.load it from a pre-written file (which can be in any format supported by
astropy.table.Table
, as long as that format allows for header-keywords as well as table entries.
CameraReadout
is used by the ImageExtractor
in the ctapipe.image
module
to ensure the images are scaled to the correct units.
Input/Output¶
- You can write out a
CameraReadout
by using theCameraReadout.to_table()
- method to turn it into an
astropy.table.Table
, and then call itswrite()
function. Reading it back in can be done with
CameraReadout.from_table()
- method to turn it into an
readout = CameraReadout(...) # constructed elsewhere
readout.to_table().write('mycam.fits.gz') # FITS output
readout.to_table().write('mycam.h5', path='/cameras/mycam') # hdf5 output
readout.to_table().write('mycam.ecsv', format='ascii.ecsv') # text table
# later read back in:
readout = CameraReadout.from_table('mycam.ecsv', format='ascii.ecsv')
readout = CameraReadout.from_table('mycam.fits.gz')
readout = CameraReadout.from_table('mycam.h5', path='/cameras/mycam')
Reference/API¶
ctapipe.instrument.camera.readout Module¶
Utilities for reading or working with Camera geometry files
Classes¶
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