About the only thing that can go wrong is not having the pulsar details correct in the catalogue OR not integrating for long enough. ... You can check what the catalogue thinks it knows about the pulsar by using psrinfo and typing . ... NSUB: - Number of frequency sub-bands . ... Note if you are reducing this data at Parkes you will have to copy psrcat.unformatted back up to $PSRHOME/soft/psrinfo at Parkes before rerunning tarchfb_driver. Back to the Filterbank data reduction page. ...