EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment N05C2. 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 Aug 29 14:24:46 CEST 2005 zparagi@jive.nl

General Comments. ( Brief data summary and scan listing )
C-band NME observed on 6 June 2005 (session 2/2005). 256 Mbps, 2-bit sampling, dual polarization. There were 4*8 MHz channels in both RCP and LCP. In the first half only western EVN observed, with Sh joining two scans. The second part was scheduled for Arecibo. Sources observed were OQ208, and two phase-reference pairs: 4C39.25 - J0916+3854, and J0956+2515 - J0954+2639.

Noto could not participate in the session because of an antenna problem. Torun used Rubidium frequency standard instead of the H-maser. This is OK for bright targets, but not suitable for phase-referencing experiments.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.59 . ERI* = 0.59 . (Ef=0.91, Wb=1.0, Jb1=0.91, On=1.0, Mc=0.94, Nt=0.0, Tr=1.0, Sh=1.0 [~1/10 of the time], Ar=1.0 [~1/3 of the time])

Plots of the autocorrelations .
Comments.

Plots of the uncalibrated amplitude and phase against time .
Comments.
Ef: 15 minutes lost around 16:30 UT.
Jb: first 15 minutes lost.
Mc: 10 minutes lost around 17:30 UT.
Hh: no detection around 18:00 is due to low source elevation

Plots of the uncalibrated amplitude and phase against frequency channel .
Comments.

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

TSYS against time .
Comments.

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.
Wb and Tr somewhat less sensitive than expected. See the EVN Status Table.

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

Fringe-fit delay solutions .
Comments.

Fringe-fit rate solutions .
Comments.
High rates for Torun.

Telescope bandpasses .
Comments.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Torun phase-referencing failed. Large phase offsets seen on long baselines, for Hh and Ar.

Calibrated amplitude and phase against frequency channel .
Comments.

Naturally weighted dirty map produced before self-cal of:
OQ208: postscript , or FITS .
4C39.25: postscript , or FITS .
J0916+3854: postscript , or FITS .
J0956+2515: postscript , or FITS .
J0954+2639: postscript , or FITS .
Comments.

Uniformly weighted dirty map produced before self-cal of:
OQ208: postscript , or FITS .
4C39.25: postscript , or FITS .
J0916+3854: postscript , or FITS .
J0956+2515: postscript , or FITS .
J0954+2639: postscript , or FITS .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
OQ208.
4C39.25.
J0916+3854.
J0956+2515.
J0954+2639.
Comments.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
OQ208: postscript , or text file .
4C39.25: postscript , or text file .
J0916+3854: postscript , or text file .
J0956+2515: postscript , or text file .
J0954+2639: 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.
Wb and Tr somewhat less sensitive than expected. See the EVN Status Table.
The Lovell Telescope has a SEFD of about 60 Jy on weaker sources.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
OQ208 .
4C39.25 .
J0916+3854 .
J0956+2515 .
J0954+2639 .
Comments.

Calibrated visibilities and the source model of:
OQ208 .
4C39.25 .
J0916+3854 .
J0956+2515 .
J0954+2639 .
Comments.

Calibrated visibilities against u,v distance for:
OQ208. postscript , or png (smaller)
4C39.25. postscript , or png (smaller)
J0916+3854. postscript , or png (smaller)
J0956+2515. postscript , or png (smaller)
J0954+2639. postscript , or png (smaller)
Comments.

u,v coverage for:
OQ208. postscript , or png (smaller)
4C39.25. postscript , or png (smaller)
J0916+3854. postscript , or png (smaller)
J0956+2515. postscript , or png (smaller)
J0954+2639. postscript , or png (smaller)
Comments.

Crude maps of sources:
OQ208: postscript , or FITS .
4C39.25: postscript , or FITS .
J0916+3854: postscript , or FITS .
J0956+2515: postscript , or FITS .
J0954+2639: postscript , or FITS .
Comments.
4C39.25, OQ208 and J0956+2515 are selfcal images, while J0916+3854 and J0954+2639 are phase-referenced ones. The latter did not work very well, probably due to Arecibo station position uncertainties.