Minutes 22 03 2017

Attendance (incl. telephone etc.): Javier, Katharine, Anita, Jack, Rob Apols Tom, Megan

e-MERLIN list for access: Javier, Katharine, Anita, Jack, Rob, Neal, Megan, Danielle, Robert, Tom, Paul plus ask legacy teams

1. Current CASAfication Jack working on loading data and flagger (AO flagger)

   • import uvfits (could be done with fitsidi)

     • keep both

   • keeping history

   • gui in CASA, or 'headless' mode option

   • prioritise testing functionality

   • make non-parallised version

   • UVFITs data - information lost e.g. weights, PB infor Katharine send information to Anita

   • sorting - Jack test if this is needed if directly imported from fitsidi (happens by default if MMS created)

   • For full beam information, need Paul/Simon

   • Look at other scripts e.g. DARA

   • Uses also non-CASA functionality which all work on MS (e.g. AOflagger, WSclean) but will test and default if non-CASA packages not available not available

     • Need to have mechanism to adapt to update when new versions of external software e.g. AOFlagger 2.7 needs separate sources in sep. files Jack/Javier sort out current practice

   • Identify e-M pipeline contact person v. CASA devloper (and test pipeline each time new CASA version)

     Will also include Pythonised SERPent when available

   • Look at VLA pipeline

2. Versioning! e-MERLIN github - Javier set it up Add anyone who needs to access it to e-MERLIN mailing list Jack write READMeBeforeYouTouchThis

3. Related relevance Standard test data set Jack L-band test data set 6 G Anita C-band 3C277.1 Need standardised tests

4. Pipeline functionality (also see 1)

   • Missing Checks/warning for primary beam, Fringcal, allow pol. selective flagging (CASA deve needed).
   • What are breakpoints, stages for difficult decisions? Delay tests on unaveraged data to see if can be averaged

   Modular

   • Initial steps mostly run at observatory (see Javier current QA, incl. weblog plots) but all pipeline steps to be available to users.

   • Allow insertion of special module for Legacy teams

   • Rob provide small mixed mode

   • 16 Feb 2015 date when Cm access offset correction implemented in correlator - initially to have a break point, could be implemented by human.

     • Jack with Anita/Emily/Katharine

5. Ultimate goal re-pipeline all (useful) data!

6. Telecon once a month Anita set up Minutes to go on github