def get_psf_table(psf, emin, emax, bins):
"""Returns a table of energy and containment radius
from an EnergyDependentTablePSF object."""
# Container for data
data = []
# Loop over energies and determine PSF containment radius
ebounds = EnergyBounds.equal_log_spacing(emin, emax, bins, 'MeV')
for energy in ebounds:
energy_psf = psf.table_psf_at_energy(energy)
containment_68 = energy_psf.containment_radius(0.68)
containment_95 = energy_psf.containment_radius(0.95)
row = dict(ENERGY=energy.value,
CONT_68=containment_68.value,
CONT_95=containment_95.value)
data.append(row)
# Construct table and add correct units to columns
table = Table(data)
table['ENERGY'].units = energy.unit
table['CONT_68'].units = containment_68.unit
table['CONT_95'].units = containment_95.unit
return table
def get_psf_table(psf, emin, emax, bins):
"""Returns a table of energy and containment radius
from an EnergyDependentTablePSF object."""
# Container for data
data = []
# Loop over energies and determine PSF containment radius
ebounds = EnergyBounds.equal_log_spacing(emin, emax, bins, 'MeV')
for energy in ebounds:
energy_psf = psf.table_psf_at_energy(energy)
containment_68 = energy_psf.containment_radius(0.68)
containment_95 = energy_psf.containment_radius(0.95)
row = dict(ENERGY=energy.value,
CONT_68=containment_68.value,
CONT_95=containment_95.value)
data.append(row)
# Construct table and add correct units to columns
table = Table(data)
table['ENERGY'].units = energy.unit
table['CONT_68'].units = containment_68.unit
table['CONT_95'].units = containment_95.unit
return table
"""Plot energy dispersion example.""" import numpy as np import matplotlib.pyplot as plt from gammapy.irf import EnergyDispersion from gammapy.spectrum import EnergyBounds ebounds = EnergyBounds.equal_log_spacing(0.1, 100, 100, 'TeV') energy_dispersion = EnergyDispersion.from_gauss(ebounds, sigma=0.3) energy_dispersion.plot(type='matrix') plt.show()
