File: plot_psf.py

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"""Plot a PSF from the HESS DL3 data release 1."""

import matplotlib.pyplot as plt
from gammapy.irf import PSF3D

filename = "$GAMMAPY_DATA/hess-dl3-dr1/data/hess_dl3_dr1_obs_id_020136.fits.gz"
psf = PSF3D.read(filename, hdu="PSF")
psf.peek()
plt.show()