EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EB052E_1. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Wed Dec 2 11:45:07 CET 2015 mao@jive.eu

General Comments. ( Brief data summary and scan listing )
5cm spectral-line phase-referencing experiment, observed on 15 Mar 2015. EB052E was processed with two passes: Pass1: "continuum" 8 2 MHz bands X 2 pols, each with 128 points, 2 sec int. Pass2: "line" 1 2 MHz bands X 2 pols, 1024 points, 2 sec int. 10 stations scheduled, however only 9 stations recorded useful data. This document summarises the "continuum" pass (eb052e_1), which includes only 3C345 and J1825-0737

The EVN reliability indicator (ERI) for this experiment was ERI = 0.8 . ERI* = 0.8 . The ERI* value takes into account that:
- Nt did not record any useful data
The ERI value also takes into account losses that are outside the station's control, of which there were none for this experiment.

Plots of the autocorrelations
Comments.
Each scan plotted separately, all stations. There are some RFI peaks in TR and WB.

plots of the uncalibrated amplitude and phase against time
Comments.
Full-experiment for Ef-* baselines, no calibration applied. A 1.5 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.
No cross-pols for this experiment

TSYS against time
Comments.
TY1 table, each IF/pol on a separate plot. ON received "default" antab 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. -Hh: no solutions on the phase-reference sources in all subbands Use extra care in re-running the fringe-fitting.

Fringe-fit delay solutions
Comments.
SN2 station delay solutions for the fringed sources, each IF/pol on a separate plot. -Hh: no solutions on the phase-reference sources in all subbands Use extra care in re-running the fringe-fitting.

Fringe-fit rate solutions
Comments.
SN2 station rate solutions. -Hh: no solutions on the phase-reference sources in all subbands Use extra care in re-running the fringe-fitting.

Telescope bandpasses
Comments.
Bandpass table 1. 3C345 and J1825-0737 were used for bandpass calibration. Some more edge channel flagging may be beneficial.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Full-experiment for Ef-* baselines, calibrated with CL3. A 1.5 minute plot-averaging was used.

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:
3C345: pdf (not available) , or FITS (not available) .
J1825-0737: pdf (not available) , or FITS (not available) .
Comments.
na

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
3C345: pdf (not available) , or FITS (not available) .
J1825-0737: pdf (not available) , or FITS (not available) .
Comments.
na

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C345 .
J1825-0737 .
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.
3C345: pdf , or text file , or statistical summary .
J1825-0737: 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:
3C345 .
J1825-0737 .
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:
3C345 .
J1825-0737 .
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:
3C345: pdf , or png .
J1825-0737: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.

u,v coverage for:
3C345: pdf , or png .
J1825-0737: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
3C345: pdf , or FITS .
J1825-0737: 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.