EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment N10M2. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Mon Oct 11 18:06:37 CEST 2010 yang@jive.nl

General Comments. ( Brief data summary and scan listing )
5cm band (6 GHz) network monitoring experiment (NME) observed on 1 Jun 2010. The data rate was 512 Mbps (8 x 8 MHz subbands, dual polarization, two-bit sampling). The experiment consisted of long scans on the calibrator sources J0958+4725, 4C39.25, as well as a fast-phase referencing part with 'J0926+4029' as the target and '4C39.25' as the phase-reference source. In this pipeline reduction, Ef served as reference antennas and Ef was the plot reference, i.e. baselines to Ef are plotted.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.84 . ERI* = 0.84 . (Cm=0.5, Ef=1, Jb=1, On=1, Mc=0.88, Sh=1, Tr=1, Wb=1). Cm: No fringes in RCP. Mc: No fringes in IFs 1 and 2, RCP. Wb: Used single dish and TADUmax backend. On the baselines to Wb, some small scale amplitude (10%) and phase jumps (~10 deg) were found. The further investigations by Wb shows that these jumps were very likely caused by the inteference from the other unused Wb telescopes.The problem will be avoided in the future by using attenuators for the output of unused telescopes. On: Showed small-scale (<10%) amplitude variation on all the baselines to On prabably due to pointing offset caused by strong winds. Futher investigation is still ongoing. Jb: Low amplitude in LCP.

Plots of the autocorrelations
Comments.

plots of the uncalibrated amplitude and phase against time
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Cm: valid signal in IFs 5 and 6 only; 32 pages

Plots of the uncalibrated amplitude and phase against frequency channel
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50 pages

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel
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TSYS against time
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On: Noisy Tsys due to small pointing offset caused by wind. Cm: dummy antab file was used.

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.
7 pages

Fringe-fit phase solutions (including Parallactic Angle correction).
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refant = Ef; 13 pages

Fringe-fit delay solutions
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refant = Ef; 13 pages

Fringe-fit rate solutions
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refant = Ef; 13 pages

Telescope bandpasses
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refant = Ef; 2 pages

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
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16 pages

Calibrated amplitude and phase against frequency channel
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36 pages

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
J0958+4725: pdf (not available) , or FITS (not available) .
J0926+4029: pdf , or FITS .
4C39.25: pdf (not available) , or FITS (not available) .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J0958+4725: pdf (not available) , or FITS (not available) .
J0926+4029: pdf , or FITS .
4C39.25: pdf (not available) , or FITS (not available) .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J0958+4725 .
J0926+4029 (not available) .
4C39.25 .
Comments.
refant = Ef;

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J0958+4725: pdf , or text file , or statistical summary .
J0926+4029: pdf (not available) , or text file (not available) , or statistical summary (not available) .
4C39.25: pdf , or text file , or statistical summary .
Comments.

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.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J0958+4725 .
J0926+4029 (not available) .
4C39.25 .
Comments.

Calibrated visibilities and the source model of:
J0958+4725 .
J0926+4029 (not available) .
4C39.25 .
Comments.

Calibrated visibilities against u,v distance for:
J0958+4725: pdf , or png .
J0926+4029: pdf , or png .
4C39.25: pdf , or png .
Comments.

u,v coverage for:
J0958+4725: pdf , or png .
J0926+4029: pdf , or png .
4C39.25: pdf , or png .
Comments.

Crude maps of sources:
J0958+4725: pdf , or FITS .
J0926+4029: pdf , or FITS .
4C39.25: pdf , or FITS .
Comments.