def prep_ccsn(h, sim_times, Tc, fw):
"""Function to prepare a single polarization of a simulated ccsn waveform - resample, high pass filter and window
"""
dt = sim_times[1] - sim_times[0]
h = TimeSeries(h, t0=sim_times[0], dt=dt)
h = h.resample(rate=fw, ftype='iir',
n=20) # downsample to working frequency fw
h = h.highpass(frequency=11,
filtfilt=True) # filter out frequencies below 20Hz
inj_window = scisig.tukey(M=len(h), alpha=0.08, sym=True)
h = h * inj_window
h = h.pad(int((fw * Tc - len(h)) / 2))
return h
def load_inject_condition_ccsn(t_i, t_f, t_inj, ra, dec, ccsn_paper, ccsn_file, D_kpc=10, local=False, Tc=16, To=2, fw=2048, window='tukey', detector='H',
qtrans=False, qsplit=False, dT=2.0, save=False, data_path=None):
"""Fucntion to load a chunk, inject a waveform and condition, created to enable parallelizing.
"""
if local:
files = get_files(detector)
try:
data = TimeSeries.read(files, start=t_i, end=t_f, format='hdf5.losc') # load data locally
except:
return
else:
# load data from losc
try:
data = TimeSeries.fetch_open_data(detector + '1', *(t_i, t_f), sample_rate=fw, verbose=False, cache=True)
except:
return
if np.isnan(data.value).any():
return
det_obj = Detector(detector + '1')
delay = det_obj.time_delay_from_detector(Detector('H1'), ra, dec, t_inj)
t_inj += delay
fp, fc = det_obj.antenna_pattern(ra, dec, 0, t_inj)
wfs_path = Path(git_path + '/shared/ccsn_wfs/' + ccsn_paper)
sim_data = [i.strip().split() for i in open(join(wfs_path, ccsn_file)).readlines()]
if ccsn_paper == 'radice':
line_s = 1
else:
line_s = 0
D = D_kpc * 3.086e+21 # cm
sim_times = np.asarray([float(dat[0]) for dat in sim_data[line_s:]])
hp = np.asarray([float(dat[1]) for dat in sim_data[line_s:]]) / D
if ccsn_paper == 'abdikamalov':
hc = np.zeros(hp.shape)
else:
hc = np.asarray([float(dat[2]) for dat in sim_data[line_s:]]) / D
dt = sim_times[1] - sim_times[0]
h = fp * hp + fc * hc
h = TimeSeries(h, t0=sim_times[0], dt=dt)
h = h.resample(rate=fw, ftype = 'iir', n=20) # downsample to working frequency fw
h = h.highpass(frequency=11, filtfilt=True) # filter out frequencies below 20Hz
inj_window = scisig.tukey(M=len(h), alpha=0.08, sym=True)
h = h * inj_window
h = h.pad(int((fw * Tc - len(h)) / 2))
wf_times = data.times.value
shift = int((t_inj - (wf_times[0] + Tc/2)) * fw)
h = np.roll(h.value, shift)
h = TimeSeries(h, t0=wf_times[0], dt=data.dt)
try:
h = h.taper()
except:
pass
injected_data = data.inject(h)
cond_data = condition_data(injected_data, To, fw, window, qtrans, qsplit, dT)
x = []
times = []
for dat in cond_data:
x.append(dat.values)
times.append(dat.t0)
x = np.asarray(x)
times = np.asarray(times)
idx = find_closest_index(t_inj, times)
x = x[idx]
times = times[idx]
return x, times