EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment GB064B_2. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Fri May 22 16:12:51 CEST 2009 campbell@jive.nl

General Comments. ( Brief data summary and scan listing )
GB064B had 12 stations, 1 16 MHz IF, two polarizations, and used 256 frequency points per IF/pol, with 1s integrations. Considerably more information is included in the experiment's cover letter on the standard-plots portion of the EVN Archive. The SOLINT was set to 2min. Ef was used as the reference station, with Ar used after Ef left the array.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.800 . ERI* = 0.800 . The ERI was 0.800, with losses including Cm (no fringes throughout, problem with frequency set-up). The ERI calculation includes only EVN stations (no Gb, Yy).

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-* baselines, no calibration applied. A 2 minute plot-averaging was used.

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
Scalar averaged Ef-* 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. Tsys values.

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. There seems to be noticeably different delay/rate trends on long baselines to Ef (Gb, Yy) for MGO compared to the reference source, which stays flat in both (as in all 4 parts). The jump delay between the jobs using different apriori clocks can be seen at around 10:40 and the brief period from 12:18-12:28.

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

Telescope bandpasses
Comments.
Bandpass table 1. 0234+285 & 0423-013 were used for bandpass calibrators.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Full-experiment for Ef-* 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:
MG0414: pdf (not available) , or FITS (not available) .
J0422+0219: pdf (not available) , or FITS (not available) .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
MG0414: pdf (not available) , or FITS (not available) .
J0422+0219: pdf (not available) , or FITS (not available) .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
MG0414 .
J0422+0219 .
Comments.
Plots of post-SPLIT tables SN1 for the sources.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
MG0414: pdf , or text file , or statistical summary .
J0422+0219: pdf , or text file , or statistical summary .
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:
MG0414 .
J0422+0219 .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles (not just Ef-*-*). Only stokes=I shown.

Calibrated visibilities and the source model of:
MG0414 .
J0422+0219 .
Comments.
For each (fringed) source, plots of amp/phase on Ef-* baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted.

Calibrated visibilities against u,v distance for:
MG0414: pdf , or png .
J0422+0219: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.

u,v coverage for:
MG0414: pdf , or png .
J0422+0219: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
MG0414: pdf , or FITS .
J0422+0219: 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. The maps for 0234+285 & 0423-013 weren't made in this automatec process.