EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment GH009A. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Tue Oct 12 07:21:23 CEST 2010 mahmud@jive.nl

General Comments. ( Brief data summary and scan listing )
GH009A had 13 stations, 8 16 MHz IFs, and two polarizations, and used 32 frequency points per IF/pol, with 2s integrations. In the pipelining, the target sources were treated as phase-referenced sources and not directly fringed. The SOLINT was set automatically at a representative length of a reference-source scan in a phase-reference cycle. Ef, Fd and Wb were used as the reference stations.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.35 (6 scheduled EVN stations) . ERI* = 0.35 . The ERI was 0.35. Only EVN stations contributed to the ERI calculation (i.e Ef, Wb, Mc, Ys, Ar and Nt). Losses include no Ys and Ar (out due to mechanical problems) and the first hour for Ef due to a broken motor.

Plots of the autocorrelations
Comments.
Each scan plotted separately, all stations.

plots of the uncalibrated amplitude and phase against time
Comments.
Full-experiment for Ef-*, Fd-* and Wb-* baselines, no calibration applied.

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
Scalar averaged Ef-*, Fd-* and Wb-* baselines, each scan plotted separately. No calibration applied yet.

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel (not available)
Comments.

TSYS against time
Comments.
TY1 table, each IF/pol on a separate plot.

Telescope sensitivities from the a priori TSYS and Gain curves (the square of this number gives the antenna noise (SEFD) in Jy - the smaller the better).
Comments.
Gain amplitude from CL2 table.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
CL3 station phase solutions -- CL3 = CL2+SN2, thus also includes the initial amplitude/parallactic angle calibration from CL2 and the fringe solutions from SN2.

Fringe-fit delay solutions
Comments.
SN2 station delay solutions for the fringed sources, each IF/pol on a separate plot.

Fringe-fit rate solutions
Comments.
SN2 station rate solutions.

Telescope bandpasses
Comments.
Bandpass table 1. The phase ref calibrator source was used for bandpass calibration (EF missed fringe finder scans).

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Full-experiment for Ef-*, Fd-* and Wb-* baselines, calibrated with CL3. The 2-min plot-averaging still applied.

Calibrated amplitude and phase against frequency channel
Comments.
Ef-* baselines calibrated with CL3 and BP1. The amp and phase plots self-scale, not necessarily going down to 0 in the case of the amps.

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
J0750+1823: pdf (not available) , or FITS (not available) .
2M0746+20: pdf , or FITS .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J0750+1823: pdf (not available) , or FITS (not available) .
2M0746+20: pdf , or FITS .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J0750+1823 .
2M0746+20 (not available) .
Comments.
Plots of post-SPLIT tables SN1 for the sources that have been individually fringed.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J0750+1823: pdf , or text file , or statistical summary .
2M0746+20: pdf (not available) , or text file (not available) , or statistical summary (not available) .
Comments.
As above, but for the post-SPLIT table SN2.

Telescope sensitivities (the total AMP gain applied during both a priori and self calibration; the square of this number gives the antenna noise (SEFD) in Jy).
Comments.
CL4 gain-amp.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J0750+1823 .
2M0746+20 (not available) .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles. Only stokes=I shown.

Calibrated visibilities and the source model of:
J0750+1823 .
2M0746+20 (not available) .
Comments.
For each (fringed) source, plots of amp/phase on Ef-*, Fd-* and Wb-* baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted.

Calibrated visibilities against u,v distance for:
J0750+1823: pdf , or png .
2M0746+20: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.

u,v coverage for:
J0750+1823: pdf , or png .
2M0746+20: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
J0750+1823: pdf , or FITS .
2M0746+20: pdf , or FITS .
Comments.
For each source, a CLEAN map resulting from the automated fringing and self-cal iterations (or phase-referencing) in the pipeline script.