def test_fill_map_counts_uint_column(events):
# Check that unsigned int column works.
# Regression test for https://github.com/gammapy/gammapy/issues/1620
axis = MapAxis.from_edges([0, 3, 6], name="event_id")
m = Map.create(npix=(2, 1), binsz=10, axes=[axis])
fill_map_counts(m, events)
assert m.data.sum() == 1
assert_allclose(m.data[0, 0, 0], 1)
def test_fill_map_counts_hpx(events):
# 2D map
m = Map.from_geom(HpxGeom(1))
fill_map_counts(m, events)
assert m.data[4] == 2
# 3D with energy axis
axis = MapAxis.from_edges([9, 11, 13], name="energy", unit="TeV")
m = Map.from_geom(HpxGeom(1, axes=[axis]))
fill_map_counts(m, events)
assert m.data[0, 4] == 1
assert m.data[1, 4] == 1
def test_fill_map_counts_wcs(events):
# 2D map
m = Map.create(npix=(2, 1), binsz=10)
fill_map_counts(m, events)
assert_allclose(m.data, [[1, 0]])
# 3D with energy axis
axis = MapAxis.from_edges([9, 11, 13], name="energy", unit="TeV")
m = Map.create(npix=(2, 1), binsz=10, axes=[axis])
fill_map_counts(m, events)
assert m.data.sum() == 1
assert_allclose(m.data[0, 0, 0], 1)
def cli_image_bin(event_file, reference_file, out_file, overwrite):
"""Bin events into an image.
You have to give the event, reference and out FITS filename.
"""
log.info("Executing cli_image_bin")
log.info("Reading {}".format(event_file))
events = EventList.read(event_file)
log.info("Reading {}".format(reference_file))
m_ref = Map.read(reference_file)
counts_map = Map.from_geom(m_ref.geom)
fill_map_counts(counts_map, events)
log.info("Writing {}".format(out_file))
counts_map.write(out_file, overwrite=overwrite)
geom = WcsGeom.create(binsz=0.02 * u.deg, skydir=pos_target, width="5 deg")
# Let's create an ON-map and an OFF-map:
# In[ ]:
on_map = Map.from_geom(geom)
off_map = Map.from_geom(geom)
events_vela_on = events_vela.select_parameter("PHASE", on_phase_range)
events_vela_off = events_vela.select_parameter("PHASE", off_phase_range)
# In[ ]:
fill_map_counts(on_map, events_vela_on)
fill_map_counts(off_map, events_vela_off)
# Defining alpha as the ratio of the ON and OFF phase zones
alpha = (on_phase_range[1] - on_phase_range[0]) / (off_phase_range[1] -
off_phase_range[0])
# Create and fill excess map
# The pulsed events are the difference between the ON-phase count and alpha times the OFF-phase count
excess_map = on_map - off_map * alpha
# Plot excess map
excess_map.smooth(kernel="gauss", width=0.2 * u.deg).plot(add_cbar=True)
# ## Phase-resolved spectrum
def test_fill_map_counts_keyerror(events):
axis = MapAxis([0, 1, 2], name="nokey")
m = WcsNDMap.create(binsz=0.1, npix=10, axes=[axis])
with pytest.raises(KeyError):
fill_map_counts(m, events)