inspiral_lr.py: enable iDQ only for singles

gstlal-inspiral/python/stats/inspiral_lr.py

@@ -394,14 +394,16 @@ class LnSignalDensity(LnLRDensity):
 		# instruments)
 		interp = self.interps["snr_chi"]
 
-		# Evaluate the IDQ glitch probability # FIXME put in denominator
-		for ifo, seg in segments.items():
-			# only proceed if we have a trigger from this ifo
-			if ifo in snrs:
-				# FIXME don't just use the last segment, somehow include whole template duration?
-				t = float(seg[1])
-				# NOTE choose max over +-1 seconds because the sampling is only at 1 Hz.
-				lnP -= max(self.idq_glitch_lnl[ifo]([t-1., t, t+1.]))
+		# Evaluate the IDQ glitch probability (singles only)
+		# FIXME put in denominator
+		if len(snrs) == 1:
+			for ifo, seg in segments.items():
+				# only proceed if we have a trigger from this ifo
+				if ifo in snrs:
+					# FIXME don't just use the last segment, somehow include whole template duration?
+					t = float(seg[1])
+					# NOTE choose max over +-1 seconds because the sampling is only at 1 Hz.
+					lnP -= max(self.idq_glitch_lnl[ifo]([t-1., t, t+1.]))
 
 		return lnP + sum(interp(snrs[instrument], chi2_over_snr2) for instrument, chi2_over_snr2 in chi2s_over_snr2s.items())