Scripts for dealing with preparation of offline gracedb upload files

bin/all_sky_search/pycbc_make_bayestar_skymap

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+#!/usr/bin/env python
+
+"""
+Simple wrapper around bayestar-localize-coincs to get sky localization for a
+specific compact binary merger event.
+
+Uses an XML containing SNR timeseries and PSD and calls BAYESTAR to produce a
+sky localization.
+
+The wrapper needs to exist as the XML format doesnt allow us to indicate
+the low frequency cutoff or waveform used. We also want to be able to control
+the output filename which is not possible in bayestar-localize-coincs
+
+Unrecognised options will be passed straight to the bayestar subprocess
+"""
+
+import argparse
+import subprocess
+import shutil
+import logging
+import os
+import glob
+import sys
+import random
+import tempfile
+import pycbc.version
+from pycbc import init_logging
+
+parser = argparse.ArgumentParser(description=__doc__)
+parser.add_argument('--version', action="version",
+                    version=pycbc.version.git_verbose_msg)
+parser.add_argument('--verbose', action='count',
+                    help="Make the logging increasingly more verbose")
+parser.add_argument('--bayestar-executable',
+                    help="The bayestar-localize-coinc executable to be run. "
+                         "If not given, will use whatever is available in "
+                         "the current environment.")
+parser.add_argument('--event-xml', required=True,
+                    help="XML file containing event information, SNR "
+                         "timeseries and PSD to pass to bayestar")
+parser.add_argument('--waveform', default='TaylorF2',
+                    help="Waveform used in the matched-filtering "
+                         "to generate the SNR timeseries.")
+parser.add_argument('--low-frequency-cutoff', type=float, default=20,
+                    help="Low-frequency cutoff used in the matched-filtering "
+                         "to generate the SNR timeseries")
+parser.add_argument('--output-file', required=True,
+                    help="Filename to output the fits file to.")
+args, unknown = parser.parse_known_args()
+
+# Default logging is set higher than normal for this job
+logging_level = args.verbose + 1 if args.verbose else None
+init_logging(logging_level)
+logging.info("Starting")
+
+bayestar_exe = args.bayestar_executable or 'bayestar-localize-coincs'
+
+tmpdir = tempfile.mkdtemp()
+
+# Set up the command to pass to bayestar.
+# The XML file path being passed twice is a legacy requirement, not a mistake.
+cmd = [bayestar_exe,
+       args.event_xml,
+       args.event_xml,
+       '--waveform', args.waveform,
+       '--f-low', str(args.low_frequency_cutoff),
+       '-o', tmpdir]
+
+# Pass any unknown options straight to the subprocess
+cmd += unknown
+
+logging.info("Running %s", ' '.join(cmd))
+subprocess.check_output(cmd)
+
+# Find the fits file in the temporary directory:
+# It would be nice to do this better! - maybe use the input xml
+# file to find the number which is going to be used?
+fits_filenames = glob.glob(os.path.join(tmpdir, '*.fits*'))
+if len(fits_filenames) != 1:
+    raise ValueError(f'argh, got {len(fits_filenames)} FITS files after running BAYESTAR, I want one!')
+
+logging.info("Moving output to %s", args.output_file)
+shutil.move(fits_filenames[0], args.output_file)
+
+logging.info("Done")

bin/all_sky_search/pycbc_prepare_xml_for_gracedb

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+#!/usr/bin/env python
+
+# Copyright (C) 2015-2023 Ian Harry, Gareth Cabourn Davies
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 3 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+# Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+"""
+Take a coinc xml file containing multiple events and prepare one of them
+for upload to gracedb.
+"""
+
+import argparse
+import logging
+import numpy as np
+import h5py
+import matplotlib
+matplotlib.use('agg')
+
+import pycbc
+import lal
+import lal.series
+from ligo.lw import lsctables
+from ligo.lw import utils as ligolw_utils
+from ligo.segments import segment, segmentlist
+from pycbc.io.ligolw import (
+    LIGOLWContentHandler,
+    snr_series_to_xml,
+)
+from pycbc.psd import interpolate
+from pycbc.types import FrequencySeries, TimeSeries, load_timeseries
+from pycbc.types import MultiDetOptionAction
+from pycbc.results import generate_asd_plot, generate_snr_plot
+
+parser = argparse.ArgumentParser(description=__doc__)
+parser.add_argument("--verbose", action='count',
+                    help="Increase logging level, default=info")
+parser.add_argument("--psd-files", nargs='+', required=True,
+                    help='HDF file(s) containing the PSDs to upload')
+parser.add_argument("--snr-timeseries", nargs='+', required=True,
+                    help='HDF file(s) containing the SNR timeseries to upload')
+parser.add_argument('--input-file', required=True, type=str,
+                    help='Input LIGOLW XML file of coincidences.')
+parser.add_argument('--event-id', type=int, required=True,
+                    help='ID for the event being prepared.')
+parser.add_argument('--output-file',
+                    help="Output filename for the locally stored XML. ")
+parser.add_argument('--snr-timeseries-plot',
+                    help="Output filename for the plot of SNR timeseries. "
+                         "Must be a plot filetype as used by matplotlib.")
+parser.add_argument('--psd-plot',
+                    help="Output filename for the plot of the PSD. "
+                         "Must be a plot filetype as used by matplotlib.")
+parser.add_argument('--channel-name', action=MultiDetOptionAction,
+                    required=True,
+                    help="Channel name for adding to the uploaded single "
+                         "inspiral table.")
+parser.add_argument('--delta-f', type=float, default=0.25,
+                    help="Frequency spacing of the PSD to be uploaded, Hz. "
+                         "Default 0.25")
+
+args = parser.parse_args()
+
+if args.verbose:
+    args.verbose += 1
+else:
+    args.verbose = 1
+pycbc.init_logging(args.verbose)
+
+xmldoc = ligolw_utils.load_filename(args.input_file,
+                             contenthandler=LIGOLWContentHandler)
+
+class psd_segment(segment):
+    def __new__(cls, psd, *args):
+        return segment.__new__(cls, *args)
+    def __init__(self, psd, *args):
+        self.psd = psd
+
+def read_psds(psd_files):
+    logging.info("Reading PSDs")
+    psds = {}
+
+    for psd_file in psd_files:
+        (ifo, group), = h5py.File(psd_file, "r").items()
+        psd = [group["psds"][str(i)] for i in range(len(group["psds"].keys()))]
+        psds[ifo] = segmentlist(psd_segment(*segargs) for segargs in zip(
+            psd, group["start_time"], group["end_time"]))
+        return psds
+
+psds = read_psds(args.psd_files)
+
+def read_snr_timeseries(snr_timeseries_files):
+    """
+    Get information from the single_template snr timeseries files
+    """
+    logging.info("Reading SNR timeseries")
+    snr_timeseries = {}
+    for snr_filename in snr_timeseries_files:
+        with h5py.File(snr_filename, 'r') as snr_f:
+            ifo = snr_f.attrs['ifo']
+            time = snr_f.attrs['event_time']
+        snr_timeseries[(ifo, time)] = load_timeseries(snr_filename, 'snr')
+    return snr_timeseries
+
+snr_timeseries = read_snr_timeseries(args.snr_timeseries)
+
+coinc_table = lsctables.CoincTable.get_table(xmldoc)
+coinc_inspiral_table = lsctables.CoincInspiralTable.get_table(xmldoc)
+coinc_event_map_table = lsctables.CoincMapTable.get_table(xmldoc)
+sngl_inspiral_table = lsctables.SnglInspiralTable.get_table(xmldoc)
+
+xmldoc.childNodes[-1].removeChild(sngl_inspiral_table)
+xmldoc.childNodes[-1].removeChild(coinc_event_map_table)
+xmldoc.childNodes[-1].removeChild(coinc_inspiral_table)
+xmldoc.childNodes[-1].removeChild(coinc_table)
+
+# Find the coinc_table entry corresponding to the desired event ID
+for event in coinc_table:
+    coinc_event_id = event.coinc_event_id
+    if args.event_id == coinc_event_id:
+        # This is the event we want
+        break
+else:
+    raise ValueError(f"event {args.event_id} not found in coinc table")
+
+coinc_event_table_curr = lsctables.New(lsctables.CoincTable)
+coinc_event_table_curr.append(event)
+coinc_inspiral_table_curr = lsctables.New(lsctables.CoincInspiralTable)
+coinc_event_map_table_curr = lsctables.New(lsctables.CoincMapTable)
+sngl_inspiral_table_curr = lsctables.New(lsctables.SnglInspiralTable)
+
+for coinc_insp in coinc_inspiral_table:
+    if coinc_insp.coinc_event_id == event.coinc_event_id:
+        coinc_inspiral_table_curr.append(coinc_insp)
+
+time = coinc_inspiral_table_curr[0].end_time \
+        + coinc_inspiral_table_curr[0].end_time_ns * 1e-9
+
+sngl_ids = []
+for coinc_map in coinc_event_map_table:
+    if coinc_map.coinc_event_id == event.coinc_event_id:
+        coinc_event_map_table_curr.append(coinc_map)
+        sngl_ids.append(coinc_map.event_id)
+
+# Get the SNR timeseries and PSDs at the time of this event
+# these may not have contributed a trigger
+
+# Check that the SNR timeseries correspond to the event
+# - allow 0.5s either side of the time
+snr_ts = {}
+for ifo, t in snr_timeseries.keys():
+    if not abs(t - time) < 0.5:
+        raise ValueError("SNR timeseries for IFO %s does not look like it "
+            "corresponds to this event, event time %.3f, SNR timeseries is "
+            "around time %.3f" % (ifo, time, t))
+    # Convert the SNR dict to be keyed on IFO-only:
+    snr_ts[ifo] = snr_timeseries[(ifo, t)]
+
+# IFOs from SNR timeseries:
+psds_event = {}
+psddict = {}
+for ifo in snr_ts.keys():
+    psd = psds[ifo]
+
+    psd = psd[psd.find(time)].psd
+    # resample the psd to new spacing
+    psd_fs = FrequencySeries(psd, delta_f=psd.attrs["delta_f"],
+                             dtype=np.float64)
+    psd_fs = interpolate(psd_fs, args.delta_f)
+
+    psds_event[ifo] = psd
+    psddict[ifo] = psd_fs
+
+lal_psddict = {}
+sample_freqs = {}
+
+for sngl in sngl_inspiral_table:
+    if sngl.event_id not in sngl_ids:
+        continue
+    sngl_inspiral_table_curr.append(sngl)
+    sngl.channel = args.channel_name[sngl.ifo]
+
+    # Two versions of the PSD dictionary have useful info here
+    psd = psds_event[sngl.ifo]
+    psd_fs = psddict[sngl.ifo]
+
+    flow = psd.file.attrs['low_frequency_cutoff']
+    kmin = int(flow / args.delta_f)
+
+    fseries = lal.CreateREAL8FrequencySeries(
+        "psd",
+        lal.LIGOTimeGPS(int(psd.attrs["epoch"])),
+        kmin * args.delta_f,
+        args.delta_f,
+        lal.StrainUnit**2 / lal.HertzUnit,
+        len(psd_fs) - kmin)
+    fseries.data.data = psd_fs[kmin:] / np.square(pycbc.DYN_RANGE_FAC)
+    lal_psddict[sngl.ifo] = fseries
+
+    snr_series_to_xml(snr_ts[sngl.ifo], xmldoc, sngl.event_id)
+
+xmldoc.childNodes[-1].appendChild(coinc_event_table_curr)
+xmldoc.childNodes[-1].appendChild(coinc_inspiral_table_curr)
+xmldoc.childNodes[-1].appendChild(coinc_event_map_table_curr)
+xmldoc.childNodes[-1].appendChild(sngl_inspiral_table_curr)
+lal.series.make_psd_xmldoc(lal_psddict, xmldoc.childNodes[-1])
+
+ligolw_utils.write_filename(xmldoc, args.output_file)
+logging.info("Saved XML file %s", args.output_file)
+
+if args.psd_plot:
+    logging.info("Saving ASD plot %s", args.psd_plot)
+    generate_asd_plot(psddict, args.psd_plot)
+
+if args.snr_timeseries_plot:
+    triggers = {sngl.ifo: (sngl.end_time + sngl.end_time_ns * 1e-9, sngl.snr)
+                for sngl in sngl_inspiral_table_curr}
+    base_time = int(np.floor(time))
+    logging.info("Saving SNR plot %s", args.snr_timeseries_plot)
+    generate_snr_plot(
+        snr_ts,
+        args.snr_timeseries_plot,
+        triggers,
+        base_time
+    )
+
+logging.info('Done!')