def test_z_n_search_expocorr_fails(self):
"""Test pulse phase calculation, frequency only."""
frequencies = np.arange(9.8, 9.99, 0.1/self.tseg)
with pytest.raises(ValueError) as excinfo:
freq, stat = z_n_search(self.event_times, frequencies, nharm=1,
nbin=35, expocorr=True)
assert 'To calculate exposure correction' in str(excinfo.value)
def test_z_n_search_weights(self):
"""Test pulse phase calculation, frequency only."""
frequencies = np.arange(9.8, 9.99, 0.1/self.tseg)
freq, stat = z_n_search(self.times, frequencies, nbin=44,
nharm=1, weights=self.counts)
minbin = np.argmin(np.abs(frequencies - self.pulse_frequency))
maxstatbin = freq[np.argmax(stat)]
assert np.allclose(maxstatbin, frequencies[minbin], atol=0.1/self.tseg)
def test_z_n_search_expocorr(self):
"""Test pulse phase calculation, frequency only."""
frequencies = np.arange(9.8, 9.99, 0.1/self.tseg)
with pytest.warns(UserWarning):
freq, stat = z_n_search(self.event_times, frequencies, nbin=64,
nharm=2, expocorr=True, gti=self.gti)
minbin = np.argmin(np.abs(frequencies - self.pulse_frequency))
maxstatbin = freq[np.argmax(stat)]
assert np.allclose(maxstatbin, frequencies[minbin], atol=0.1/self.tseg)
def test_z_n_search_fdot(self):
"""Test pulse phase calculation, frequency only."""
frequencies = np.arange(9.8, 9.99, 0.1/self.tseg)
fdots = [-0.1, 0, 0.1]
freq, fdot, stat = z_n_search(self.event_times, frequencies, nbin=25,
nharm=2, fdots=fdots)
minbin = np.argmin(np.abs(frequencies - self.pulse_frequency))
maxstatbin = freq.flatten()[np.argmax(stat)]
assert np.allclose(maxstatbin, frequencies[minbin], atol=0.1/self.tseg)
maxfdot = fdot.flatten()[np.argmax(stat)]
assert np.allclose(maxfdot, 0.0, atol=0.1/self.tseg)
