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analysis:fourfit [2015/06/12 06:43]
Jamie McCallum
analysis:fourfit [2017/06/06 01:26]
Jamie McCallum
Line 1: Line 1:
 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.
  
-* Download the following files from the Pawsey server to ~/​Downloads: ​ AUG013.MARK4.tar.gz,​ aug013.vex and aug013.v2d +  ​* Download the following files from the Pawsey server to ~/​Downloads: ​ AUG013.MARK4.tar.gz,​ aug013.vex and aug013.v2d 
-* Run "​postcorr_prep.sh aug013"​ to copy the data across to /​data/​AUSTRAL/​ extract them into the appropriate folders. It will also get you to check the ovex files station ID assignments and generate the apriori SNR file (delete all the leading text before the first two headers). +  * Run "​postcorr_prep.sh aug013"​ to copy the data across to /​data/​AUSTRAL/​ extract them into the appropriate folders. It will also get you to check the ovex files station ID assignments and generate the apriori SNR file (delete all the leading text before the first two headers). 
-* 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 +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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 A more concise version is included below: A more concise version is included below:
  
-   for i in $(cat /tmp/scans) ; do echo $i ; fourfit -c cf_1234 $i ; done+<​code>​ 
 +parallel ​fourfit -c cf_1234 ​::: $(ls -d 12*) 
 +</​code>​
  
 Once the fourfit processes are complete (15-30 minutes?), run alist with ''​alist * ''​ and then edit the file with the following commands Once the fourfit processes are complete (15-30 minutes?), run alist with ''​alist * ''​ and then edit the file with the following commands
  
    sed -i 's/ 16383 / 1234 /g' alist.out    sed -i 's/ 16383 / 1234 /g' alist.out
-   grep -v " LL " ​alist.out ​| grep -v " ii " | grep -v " xx " | grep -v " ee " | grep -v " HH " | grep -v " gg " | grep -v " WW " ​> alist.ed.out+   grep -v  '​0.000000 0.000  -1  -1' ​alist.out > alist.ed.out
        
 Download the skd file and reprocess it into an ovex file. NB - ''​nskd_ovex.pl''​ needs to have internet access - you'll need to define the proxy settings for most machines. ​ Download the skd file and reprocess it into an ovex file. NB - ''​nskd_ovex.pl''​ needs to have internet access - you'll need to define the proxy settings for most machines. ​
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    alist *    alist *
    sed -i 's/ 16383 / 1234 /g' alist.out    sed -i 's/ 16383 / 1234 /g' alist.out
-   grep -v " LL " ​alist.out ​| grep -v " ii " | grep -v " HH " | grep -v " ee " | grep -v " xx " | grep -v " gg " | grep -v " TT " | grep -v " TT " | grep -v " WW " ​> alist.ed.out+   grep -v  '​0.000000 0.000  -1  -1' ​alist.out > alist.ed.out
  
  
/home/www/auscope/opswiki/data/pages/analysis/fourfit.txt · Last modified: 2017/06/06 01:26 by Jamie McCallum