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correlator:correlation [2018/05/18 14:10]
cormac [Potential issues]
correlator:correlation [2018/06/14 17:55] (current)
cormac [Setting up for correlation]
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   * getEOP.py - gets EOPS from IERS and returns them in v2d format   * getEOP.py - gets EOPS from IERS and returns them in v2d format
   * updatepos.py - update a station position in the vex file with a position from ''​$STADB''​   * updatepos.py - update a station position in the vex file with a position from ''​$STADB''​
 +  * atcapos.py - find out which ATCA pad was the refant at any given time
   * updateclock.py - update clock information in the .v2d file    * updateclock.py - update clock information in the .v2d file 
   * mjd2vex.py - converts between the various DiFX date formats (vex, MJD, ISO8601, VLBA).   * mjd2vex.py - converts between the various DiFX date formats (vex, MJD, ISO8601, VLBA).
   * espresso.py - wrapper for vex2difx, calcif2, errormon2, mpifxcorr and moves various files to the data areas to facilitate fits file creation and archiving.   * espresso.py - wrapper for vex2difx, calcif2, errormon2, mpifxcorr and moves various files to the data areas to facilitate fits file creation and archiving.
   * LBA.py - an AIPS (ParselTongue) pipeline for clock searching and data verification.   * LBA.py - an AIPS (ParselTongue) pipeline for clock searching and data verification.
 +  * archivec.py - archive the final data to the Pawsey data store.
  
 A typical Espresso correlation would look like [[espresso | this]]. A typical Espresso correlation would look like [[espresso | this]].
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   * The contact author should be {{:​correlator:​pi_corr_letter_temp.txt|emailed}} regarding their desired correlation parameters. For pulsar gating/​binning,​ an ephemeris is needed in the form of a ''​polyco''​ file in tempo 1 format. See [[https://​www.google.com.au/​url?​sa=t&​rct=j&​q=&​esrc=s&​source=web&​cd=3&​cad=rja&​uact=8&​ved=0CDgQFjAC&​url=https%3A%2F%2Fscience.nrao.edu%2Fvlba%2Fmemos%2Fsensi%2Fsensimemo32.pdf&​ei=LLBhU5TqA6qtiAfw7ICIDg&​usg=AFQjCNHpREEcFE8OqPdpKS9bdeAVz5OJoQ&​sig2=aKZLnDw3tKvYZJHdg53UUQ&​bvm=bv.65636070,​d.aGc | this VLBA memo]] by Walter Brisken for more information. ​   * The contact author should be {{:​correlator:​pi_corr_letter_temp.txt|emailed}} regarding their desired correlation parameters. For pulsar gating/​binning,​ an ephemeris is needed in the form of a ''​polyco''​ file in tempo 1 format. See [[https://​www.google.com.au/​url?​sa=t&​rct=j&​q=&​esrc=s&​source=web&​cd=3&​cad=rja&​uact=8&​ved=0CDgQFjAC&​url=https%3A%2F%2Fscience.nrao.edu%2Fvlba%2Fmemos%2Fsensi%2Fsensimemo32.pdf&​ei=LLBhU5TqA6qtiAfw7ICIDg&​usg=AFQjCNHpREEcFE8OqPdpKS9bdeAVz5OJoQ&​sig2=aKZLnDw3tKvYZJHdg53UUQ&​bvm=bv.65636070,​d.aGc | this VLBA memo]] by Walter Brisken for more information. ​
   * All data from the experiment need to be [[correlator:​globus|transferred]] to /scratch on magnus-data for correlation. If any appear to be missing, check the status at the links provided above. See the [[espresso | espresso]] example page for usage of scripts to facilitate transfers to Magnus.   * All data from the experiment need to be [[correlator:​globus|transferred]] to /scratch on magnus-data for correlation. If any appear to be missing, check the status at the links provided above. See the [[espresso | espresso]] example page for usage of scripts to facilitate transfers to Magnus.
-  * Also need to know which ATCA station pad was used as the reference for the tied array (vex default is W104, used most often). Chris Phillips wrote a script to extract the relevant information;​ Refant is the tied array reference antenna: [[http://​www.atnf.csiro.au/​cgi-bin/​vlbi/​atca_summary.pl?​start=117/​13:​00:​00&​end=118/​01:​00:​00&​year=2012|Example usage]]. ​This is now linked from the observer's wiki for each experiment.+  * Also need to know which ATCA station pad was used as the reference for the tied array (vex default is W104, used most often). Chris Phillips wrote a script to extract the relevant information ​which is linked from the observer'​s wiki for each experiment; Refant is the tied array reference antenna: [[http://​www.atnf.csiro.au/​cgi-bin/​vlbi/​atca_summary.pl?​start=117/​13:​00:​00&​end=118/​01:​00:​00&​year=2012|Example usage]]. ''​atcapos.py''​ provided with espresso will also return the reference antenna ​for any given date/time
   * If Tid was used, which antenna(s)? It's best to re-run SCHED with the correct one if necessary. If Tid used more than one antenna, a bit of fiddling may be required (I usually use a second station code '​Td'​). **Note** this is now handled in ''​$SCHED/​catalogs/​stations.dat'',​ although if DSS43 and DSS45 are both used, you may need to create a local copy of ''​stations.dat''​ and edit one of the 2-letter codes to be Td.   * If Tid was used, which antenna(s)? It's best to re-run SCHED with the correct one if necessary. If Tid used more than one antenna, a bit of fiddling may be required (I usually use a second station code '​Td'​). **Note** this is now handled in ''​$SCHED/​catalogs/​stations.dat'',​ although if DSS43 and DSS45 are both used, you may need to create a local copy of ''​stations.dat''​ and edit one of the 2-letter codes to be Td.
   * Log in to magnus and make a working area for the experiment: ''​$CORR_HOME/<​year>/<​session>/<​expcode>''​   * Log in to magnus and make a working area for the experiment: ''​$CORR_HOME/<​year>/<​session>/<​expcode>''​
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 <​code>​ <​code>​
-updateclock.py -'AT,PA' -o '2.2,​-0.2'​ -r '​0,​2'​ -f 8425 test.v2d+updateclock.py -'AT=2.2,PA=-0.2' -r 'AT=0,PA=2' -f 8425 test.v2d
 </​code>​ </​code>​
  
correlator/correlation.1526616616.txt.gz · Last modified: 2018/05/18 14:10 by cormac