The user pipeline

The pipeline products for each experiment, along with a wealth of other information, can be accessed online via the EVN Data Archive: Select the EVN experiment form the pull-down list. Clicking on ``Show experiment <XXnnn>'' will open the archive page for the selected experiment with links to all archived data products.

The calibration tables are stored as a FITS file and can be found among the pipeline calibration products. This file was written out from AIPS using TASAV and can be copied to the multi-source file in AIPS using TACOP. The tables that are contained in the TASAV FITS file are:

• CL - calibration tables. There should be three of these attached to your data.
  • CL1 - virgin calibration table.
  • CL2 - amplitude calibration. If any corrections have been made for telescope positions or axis offsets post-correlation (due to more precise measurements since) then they will be included here. The parallactic angle correction will also be found here.
  • CL3 - delay, rate and phase calibration (fringe-fit).
• BP - bandpass calibration.
• AN - antenna table. If corrections to telescope positions or axis offsets have been made then the AN table will have been updated.
• FG - flag table. This will include flags based on slew times calculated by the Sched scheduling tool or directly from the antenna control information for experiments observed since session 3 (November) 2002 (for those antennas that have this implemented). There will also be flags that remove the edge (noisy) channels in the bandpass.
• TY - antenna system temperatures.
• GC - antenna gain curves.