EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment ED042. 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 Jun 27 11:29:04 CEST 2017 marcote@jive.eu


General Comments. ( Brief data summary and scan listing )
ED042. C band e-EVN phase-referencing experiment, observed on 21 June 2017. The data rate was 2048 Mbps (8 x 32 MHz subbands, dual polarization, two-bit sampling). M81 is the target source. J0958+6533 was also observed as the calibrator and the fringe finder.
10 stations participated.

The EVN reliability indicator (ERI) for this experiment was ERI = . ERI* = .


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


Plots of the uncalibrated amplitude and phase against time
Comments.
Full-experiment for Ys-** 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 Ys-** baselines, each scan plotted separately. No calibration applied yet.


The uncalibrated amplitude and phase of the crosshand correlations against frequency channel
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. J0958+6533 was used for bandpass calibration.


Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Full-experiment for Ys-** baselines, calibrated with CL3. The 1.5-min plot-averaging still applied.


Calibrated amplitude and phase against frequency channel
Comments.
Ys-** 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:
M81: pdf (not available) , or FITS (not available) .
J0958+6533: pdf (not available) , or FITS (not available) .
Comments.


Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
M81: pdf (not available) , or FITS (not available) .
J0958+6533: pdf (not available) , or FITS (not available) .
Comments.


Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
M81 .
J0958+6533 .
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.
M81: pdf , or text file , or statistical summary .
J0958+6533: 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:
M81 .
J0958+6533 .
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:
M81 .
J0958+6533 .
Comments.
For each (fringed) source, plots of amp/phase on Ys-** baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted.


Calibrated visibilities against u,v distance for:
M81: pdf , or png .
J0958+6533: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.


u,v coverage for:
M81: pdf , or png .
J0958+6533: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.


Crude maps of sources:
M81: pdf , or FITS .
J0958+6533: pdf , or FITS .
Comments.
For each source, a CLEAN map resulting from the automated fringing and self-cal iterations in the pipeline script.