Merge branch 'fix_psd_duration' into 'master'

Set total data loaded for the PSD calculation from frame file to be `psd_duration`

See merge request Monash/tupak!75

tupak/gw/detector.py

@@ -652,7 +652,7 @@ class PowerSpectralDensity:
                 logging.warning("You may have intended to provide this as a power spectral density.")
         elif frame_file is not None:
             strain = tupak.gw.utils.read_frame_file(frame_file, t1=epoch - psd_duration - psd_offset,
-                                                    t2=epoch - psd_duration, channel=channel_name)
+                                                    t2=epoch - psd_offset, channel=channel_name)
             sampling_frequency = int(strain.sample_rate.value)
 
             # Low pass filter