EVN Network Monitoring Experiment (NME) Pipeline Feedback


Pipeline feedback for experiment N06C1. 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 Mar 21 11:20:09 CET 2006 zparagi@jive.nl

General Comments. ( Brief data summary and scan listing )
C-band NME observed on 16 February 2006 (session 1/2006). 256 Mbps, 2-bit sampling, dual polarization. There were 4*8 MHz channels in both RCP and LCP. The experiment started with 3C84 and 0234+285, then continued with phase-referencing between DA193 and J0605+4030.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.94 . ERI* = 0.94 . (Ef=1.0, Wb=1.0, Jb2=0.94, On=1.0, Mc=0.94, Nt=1.0, Tr=0.88, Hh=1.0, Ur=1.0, Sh=0.93)

Plots of the autocorrelations
Comments.

plots of the uncalibrated amplitude and phase against time
Comments.
Medicina had some bad data around 16:30 UT.
Shanghai had some bad data around 14:40 UT.
For Hartebeesthoek the sources were below horizon for some of the time.

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
Jodrell Bank produced bad data for R3 (VC#6); fixed for the second part of the experiment.
Torun L4/R4 bad data (BBC#8).

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel
Comments.

TSYS against time
Comments.
It was raining at some of the telescopes. Effelsberg reported high Tsys.

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.
Jodrell Bank was apparently a factor of two less sensitive than epected (SEFD=320 Jy, see the EVN Status Table).
Shanghai appeared to be somewhat more sensitive than listed in the EVN Status Table.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.

Fringe-fit delay solutions
Comments.

Fringe-fit rate solutions
Comments.

Telescope bandpasses
Comments.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Phase-referencing worked very well for the Western-European baselines. The longest baseines are less good.

Calibrated amplitude and phase against frequency channel
Comments.

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
3C84: pdf (not available) , or FITS (not available) .
0234+285: pdf (not available) , or FITS (not available) .
DA193: pdf (not available) , or FITS (not available) .
J0605+4030: pdf , or FITS .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
3C84: pdf (not available) , or FITS (not available) .
0234+285: pdf (not available) , or FITS (not available) .
DA193: pdf (not available) , or FITS (not available) .
J0605+4030: pdf , or FITS .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C84 .
0234+285 .
DA193 .
J0605+4030 (not available) .
Comments.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C84: pdf , or text file , or statistical summary .
0234+285: pdf , or text file , or statistical summary .
DA193: pdf , or text file , or statistical summary .
J0605+4030: pdf (not available) , or text file (not available) , or statistical summary (not available) .
Comments.
Very large corrections for Jodrell Bank (about a factor of two in Tsys).

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.
The Jodrell sensitivity after self-calibration was as expected. The apparent low sensitivity (see above) was due to bad a-priori amplitude calibration. Note that the station did update the RXG file.
Urumqi L4 (related to VC#7) was less sensitive than expected.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
3C84 .
0234+285 .
DA193 .
J0605+4030 (not available) .
Comments.

Calibrated visibilities and the source model of:
3C84 .
0234+285 .
DA193 .
J0605+4030 (not available) .
Comments.

Calibrated visibilities against u,v distance for:
3C84: pdf , or png .
0234+285: pdf , or png .
DA193: pdf , or png .
J0605+4030: pdf , or png .
Comments.

u,v coverage for:
3C84: pdf , or png .
0234+285: pdf , or png .
DA193: pdf , or png .
J0605+4030: pdf , or png .
Comments.

Crude maps of sources:
3C84: pdf , or FITS .
0234+285: pdf , or FITS .
DA193: pdf , or FITS .
J0605+4030: pdf , or FITS .
Comments.