EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment ES053B. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Fri Sep 30 13:47:55 CEST 2005 zparagi@jive.nl

General Comments. ( Brief data summary and scan listing )
OH-line project (1612 MHz) with 4x0.5 MHz channels, 2 bit sampling. Only two channels have been correlated (LCP+RCP), with 1024 spectral channels, and 2s time integration. Calibrator sources were 3C345, 3C286, J1733-1304 and J2253+1608.

Jodrell Bank and Cambridge failed to follow the schedule for a couple of hours after midnight (stuck on one source).

The EVN reliability indicator (ERI) for this experiment was ERI = 0.75 . ERI* = 0.74 . (Cm=0.5/0.4*, Jb1=0.5/0.4*, Ef=1.0/0.9*, Mc=1.0/0.9*, On=1.0/0.9*, Tr=1.0, Hh=1.0, Wb=1.0/0.9*)

Plots of the autocorrelations .
Comments.
Lots of RFI seen, occasionally very strong.
Medicina has permanent strong RFI.
Onsala is completely dead (due to interference?) for an hour near the end of the project.

Plots of the uncalibrated amplitude and phase against time .
Comments.
Cm and Jb: did not follow the schedule after midnight, till about 4 UT.
On: No fringes for about an hour, near 4 UT.

Plots of the uncalibrated amplitude and phase against frequency channel .
Comments.
Medicina RFI leaking through crosshand correlations.
Strong RFI at several stations around 23 UT caused loss of fringes. Not sure how long this was present.

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel (not available) .
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.
Torun seems to be less sensitive than expected (SEFD=230 Jy). See 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.
Torun phases somewhat noisier. Note that Torun used a Rubidium frequency standard during the session, because the H-maser was not available.

Calibrated amplitude and phase against frequency channel .
Comments.

Naturally weighted dirty map produced before self-cal of:
3C345: postscript , or FITS .
3C286: postscript , or FITS .
J1733-1304: postscript , or FITS .
J2253+1608: postscript , or FITS .
Comments.

Uniformly weighted dirty map produced before self-cal of:
3C345: postscript , or FITS .
3C286: postscript , or FITS .
J1733-1304: postscript , or FITS .
J2253+1608: postscript , or FITS .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C345.
3C286.
J1733-1304.
J2253+1608.
Comments.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C345: postscript , or text file .
3C286: postscript , or text file .
J1733-1304: postscript , or text file .
J2253+1608: 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.
Selfcal maybe helped a little, but Torun is still less sensitive than expected (SEFD=230 Jy). See the EVN Status Table).

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
3C345 .
3C286 .
J1733-1304 .
J2253+1608 .
Comments.

Calibrated visibilities and the source model of:
3C345 .
3C286 .
J1733-1304 .
J2253+1608 .
Comments.

Calibrated visibilities against u,v distance for:
3C345. postscript , or png (smaller)
3C286. postscript , or png (smaller)
J1733-1304. postscript , or png (smaller)
J2253+1608. postscript , or png (smaller)
Comments.

u,v coverage for:
3C345. postscript , or png (smaller)
3C286. postscript , or png (smaller)
J1733-1304. postscript , or png (smaller)
J2253+1608. postscript , or png (smaller)
Comments.

Crude maps of sources:
3C345: postscript , or FITS .
3C286: postscript , or FITS .
J1733-1304: postscript , or FITS .
J2253+1608: postscript , or FITS .
Comments.