From 5eb8713e6c788894db565a6b45b2c8d32b1fc05e Mon Sep 17 00:00:00 2001
From: "gregory.ashton" <gregory.ashton@ligo.org>
Date: Wed, 1 Mar 2017 12:04:05 +0100
Subject: [PATCH] Improves semi-coherent search
- Adds debug information
- If no data is in a given segment, a nan will be produced. Rather than
summing this, the code will now replace it with zero and spit out a
debug message to the effect.
---
pyfstat/core.py | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/pyfstat/core.py b/pyfstat/core.py
index d68ebab..5ec5aa1 100755
--- a/pyfstat/core.py
+++ b/pyfstat/core.py
@@ -240,6 +240,7 @@ class ComputeFstat(object):
detector_names = list(set([d.header.name for d in SFTCatalog.data]))
self.detector_names = detector_names
SFT_timestamps = [d.header.epoch for d in SFTCatalog.data]
+ self.SFT_timestamps = [float(s) for s in SFT_timestamps]
if args.quite is False and args.no_interactive is False:
try:
from bashplotlib.histogram import plot_hist
@@ -546,6 +547,15 @@ class SemiCoherentSearch(BaseSearchClass, ComputeFstat):
record_segments=False):
""" Returns twoF or ln(BSGL) semi-coherently at a single point """
+ if self.tboundaries[0] < self.SFT_timestamps[0]:
+ logging.debug(
+ 'Semi-coherent start time {} before first SFT timestamp {}'
+ .format(self.tboundaries[0], self.SFT_timestamps[0]))
+ if self.tboundaries[-1] > self.SFT_timestamps[-1]:
+ logging.debug(
+ 'Semi-coherent end time {} after last SFT timestamp {}'
+ .format(self.tboundaries[-1], self.SFT_timestamps[-1]))
+
self.PulsarDopplerParams.fkdot = np.array([F0, F1, F2, 0, 0, 0, 0])
self.PulsarDopplerParams.Alpha = Alpha
self.PulsarDopplerParams.Delta = Delta
@@ -600,6 +610,9 @@ class SemiCoherentSearch(BaseSearchClass, ComputeFstat):
log10_BSGL = lalpulsar.ComputeBSGL(
2*FS.F_mn.data[0][0], self.twoFX, self.BSGLSetup)
d_detStat = log10_BSGL/np.log10(np.exp(1))
+ if np.isnan(d_detStat):
+ logging.debug('NaNs in semi-coherent twoF treated as zero')
+ d_detStat = 0
detStat += d_detStat
if record_segments:
self.detStat_per_segment.append(d_detStat)
--
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