EVN Network Monitoring Experiment (NME) Pipeline Feedback


Pipeline feedback for experiment N04K2. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Thu Dec 9 11:07:06 CET 2004 zparagi@jive.nl

General Comments. ( Brief data summary and scan listing )
K-band NME observed on 1 Nov. 2005 (session 3/2004). This experiment was recorded at 256 Mbps using 2-bit sampling (256-8-2) which resulted in 4x8MHz channels per polarization. All stations produced fringes. The main target was OJ287. Other observed sources were DA193 and Cep A.

Jb did not participate because the MkII drive system replacement work had not finished before the K-band session started. Nt H-maser had been installed back just before the K-band NME, this was the reason for the high fringe rates. For Cm the observing frequency was centered on channel 2.

The ratio of the expected to the observed number of good visibilities on OJ287 is estimated as ERI = 0.92 (Ef=1.0, Cm=0.25/0.25, Mc=1.0, On=0.5/0.5 (LCP only), Nt=1.0, Ur=0.75, Sh=1.0, Mh=1.0).

Plots of the autocorrelations .
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Plots of the uncalibrated amplitude and phase against time .
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Plots of the uncalibrated amplitude and phase against frequency channel .
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The last two plots show Cep A maser lines.

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel .
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TSYS against time .
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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.
The On, Cm and Ur gains were corrected based on the CALIB amplitude correction factors, and the pipeline was run again. There may be still uncorrected opacity effects in the data. There are also channel-to-channel variations (e.g. On) that cannot be fixed by changing the DPFUs. See the EVN Status Table for the nominal gains.

Fringe-fit phase solutions (including Parallactic Angle correction).
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Fringe-fit delay solutions .
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Fringe-fit rate solutions .
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Nt: H-maser settling down. Rates high.

Telescope bandpasses .
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Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
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Calibrated amplitude and phase against frequency channel .
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Naturally weighted dirty map produced before self-cal of:
DA193: postscript , or FITS .
OJ287: postscript , or FITS .
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Uniformly weighted dirty map produced before self-cal of:
DA193: postscript , or FITS .
OJ287: postscript , or FITS .
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Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
DA193.
OJ287.
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Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
DA193: postscript , or text file .
OJ287: postscript , or text file .
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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).
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On: less sensitive, due to bad weather.
Ur: more sensitive than indicated in the EVN Status Table).

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
DA193 .
OJ287 .
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Calibrated visibilities and the source model of:
DA193 .
OJ287 .
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Calibrated visibilities against u,v distance for:
DA193. postscript , or png (smaller)
OJ287. postscript , or png (smaller)
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u,v coverage for:
DA193. postscript , or png (smaller)
OJ287. postscript , or png (smaller)
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DA193: postscript , or FITS .
OJ287: postscript , or FITS .
Comments.
Decent maps for a K-band NME.