EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EG034. 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 Aug 30 16:10:01 CEST 2005 zparagi@jive.nl

General Comments. ( Brief data summary and scan listing )
1 Gbps phase-referencing experiment observed on 10 June 2005 (session 2/2005). There were 8*16 MHz channels in both RCP and LCP. Fringe-finders were OQ208 (first scan) and 3C454.3, the phase calibrator was J1825-1718. This latter source was apparently resolved on Hh baselines.

Noto could not participate in the session because of an antenna problem. Torun used Rubidium frequency standard instead of the H-maser. This may not be appropriate for this phase-referencing project. The Lovell Telescope observed only every other reference source scans (according to the schedule), because of slewing limitations.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.65 . ERI* = 0.65 . (Jb1=1.0, Wb=0.87, Ef=0.84, On=1.0, Mc=0.97, Tr=0.87, Hh=1.0, Nt=0.0)

Plots of the autocorrelations .
Comments.

Plots of the uncalibrated amplitude and phase against time .
Comments.
Ef: lost last 30 minutes. Also L5 channel was dead. These are not seen on the plots since Ef was the reference for plotting. (There was no better reference antenna really.)
Wb: did not have enough bandwidth to record the highest numbered channels, R8 and L8.
Mc: first scan (OQ208) was lost. Data could not be played back from the disk pack.
Tr: BBC#3 was unlocked all the time. This was related to IFs R3-4.
Hh: telescope was late, the first scan was lost (OQ208).

Plots of the uncalibrated amplitude and phase against frequency channel .
Comments.
See notes on bad channels above.

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel (not available) .
Comments.

TSYS against time .
Comments.
There are a couple bad Tsys values for Wb.

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.
Stations tend to be less sensitive than expected, probably due to the low elevation observations. See the EVN Status Table).

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
Torun clock may not be stable enough.

Fringe-fit delay solutions .
Comments.

Fringe-fit rate solutions .
Comments.
Somewhat higher rates for Torun.

Telescope bandpasses .
Comments.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
The reference source was resolved on Hh baselines.

Calibrated amplitude and phase against frequency channel .
Comments.

Naturally weighted dirty map produced before self-cal of:
J1825-1718: postscript , or FITS .
3C454.3: postscript , or FITS .
OQ208: postscript , or FITS .
Comments.

Uniformly weighted dirty map produced before self-cal of:
J1825-1718: postscript , or FITS .
3C454.3: postscript , or FITS .
OQ208: postscript , or FITS .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J1825-1718.
3C454.3.
OQ208.
Comments.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J1825-1718: postscript , or text file .
3C454.3: postscript , or text file .
OQ208: postscript , or text file .
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.
Stations tend to be less sensitive than expected, probably due to the low elevation observations. See the EVN Status Table).

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J1825-1718 .
3C454.3 .
OQ208 .
Comments.

Calibrated visibilities and the source model of:
J1825-1718 .
3C454.3 .
OQ208 .
Comments.

Calibrated visibilities against u,v distance for:
J1825-1718. postscript , or png (smaller)
3C454.3. postscript , or png (smaller)
OQ208. postscript , or png (smaller)
Comments.

u,v coverage for:
J1825-1718. postscript , or png (smaller)
3C454.3. postscript , or png (smaller)
OQ208. postscript , or png (smaller)
Comments.

Crude maps of sources:
J1825-1718: postscript , or FITS .
3C454.3: postscript , or FITS .
OQ208: postscript , or FITS .
Comments.