[daip] edita

[Farhad Zadeh]

Hi Eric,
You really clarified  my confusion! Many thanks.
Farhad

On Wed, 2 Aug 2006, Eric Greisen wrote:

> Farhad Zadeh writes:
>
> > Many thanks for your time over the phone. I am afraid
> > I am still in dark as to how  I should do to get rid of
> > a single time record that shows to have a large gain in the
> > snplt table without editing the source data. I don't need to remove
> > the source  visiblities.
> > It looks like if I get rid of high gains using EDITA, a lot of
> > data get removed. Is there any way that I could clip
> > of high gains graphicalaly without
> >   editing the source visibilities?
> > The way, I use uvflg is to specify  a single 3 second record
> > by the time range and the antenna and
> > the bad data are gone. How could I do this graphically.
>
> You (or I) am confused about what you want to do.
>
> 1. If you interpret a bad gain record as indicative of bad uv data
> then you can edit the bad uv data in the calibrator out with UVFLG and
> do CALIB over again to get a better solution.  EDITR, TVFLG are tools
> for this.
>
> 2, If you interpret a bad gain in the SN table as indicative of a
> range of time for which the calibration is uncertain, then you will
> want to flag a range of time in the UV data.  EDITA is the best tool
> for this.
>
> 3. If you interpret a bad SN entry as indicative of a problem with the
> SN table, then you may remove the SN entry or adjust it using SNEDT.
> That task is similar to EDITR, but edits the SN table (or CL) not the
> UV data.
>
> Eric Greisen
>