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correlation:legacy_fourfit [2021/12/01 14:11]
Tiege McCarthy
correlation:legacy_fourfit [2021/12/01 14:19]
Tiege McCarthy [Manual Phasecal]
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 ====== Legacy Fourfit notes ====== ====== Legacy Fourfit notes ======
 +
 +**Please note: This information is likely out-of-date. It has simply been ported directly over from the old wiki for reference purposes.**
  
 Fourfit is the software that performs the multi-band delay fitting to the correlator visibilities. At present, magilla is set up with the latest version and has scripts installed which remove some of the donkey-work in preparing properly fringe-fitted data sets. The following recipe will work for data sets correlated at Curtin. Fourfit is the software that performs the multi-band delay fitting to the correlator visibilities. At present, magilla is set up with the latest version and has scripts installed which remove some of the donkey-work in preparing properly fringe-fitted data sets. The following recipe will work for data sets correlated at Curtin.
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   * After completing the initial fringe-fitting (using the default settings defined by /data/AUSTRAL/cf_aust), you will be prompted to enter a command like "cd /data/AUSTRAL/aug013/1344 ; export CORDATA=/data/AUSTRAL/aug013/ ; export DATADIR=/data/AUSTRAL/aug013/ ; aedit -f alist.ed.out". Do so, and you will be able to make a first inspection of the data.   * After completing the initial fringe-fitting (using the default settings defined by /data/AUSTRAL/cf_aust), you will be prompted to enter a command like "cd /data/AUSTRAL/aug013/1344 ; export CORDATA=/data/AUSTRAL/aug013/ ; export DATADIR=/data/AUSTRAL/aug013/ ; aedit -f alist.ed.out". Do so, and you will be able to make a first inspection of the data.
  
-====== Aedit ======+===== Aedit =====
  
 After running "edi dup snr", run "psplot" and check for either grey scans (uncorrelated data) or brown ones indicating non-detections. If found, make sure there's a sensible/known reason for them (module failure, antenna windstowed, etc). If there's no explanation, get in contact with the correlator ASAP.  After running "edi dup snr", run "psplot" and check for either grey scans (uncorrelated data) or brown ones indicating non-detections. If found, make sure there's a sensible/known reason for them (module failure, antenna windstowed, etc). If there's no explanation, get in contact with the correlator ASAP. 
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-====== Manual Phasecal ======+===== __Manual Phasecal__ =====
  
 If you have a station with no [or weak] phase-cal, you will need to do a manual pcal. To do this, pick a scan with good SNR (50+) in both bands - you can check this within aedit with  If you have a station with no [or weak] phase-cal, you will need to do a manual pcal. To do this, pick a scan with good SNR (50+) in both bands - you can check this within aedit with