EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment GI001C_1. 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 Aug 4 13:18:44 CEST 2005 zparagi@jive.nl

General Comments. ( Brief data summary and scan listing )
Global spectral line experiment at 1.6 GHz, observed on 2 March 2005. Channels 2-4 were 4 MHz each, these were correlated in continuum mode (pass 1, data below). Channel 1 was 1 MHz, RCP (pass 2) and LCP (pass 3) were produced separataly in line mode, with 512 spectral channels.

Torun BBC#3 was unlocked all the time; first RCP channel of the continuum was affected. In Westerbork the dishes were partly covered by snow, high Tsys expected.

Please check the pipeline ANTAB files carefully for all three passes (compare them to the ANTAB file on VLBEER, and the VLBA CAL file). For various reasons, these had to be edited by hand.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.85 . ERI* = 0.85 . (Ef=1, Wb=1, Mc=0.85, Nt=1, Tr=0.83, Hh=1, Jb=0.83)

Plots of the autocorrelations .
Comments.
All stations are affected by variable levels of RFI.

Plots of the uncalibrated amplitude and phase against time: EVN part, VLBA part .
Comments.
Mc: L3 (uppermost channel) missing in the first ~5 hours.

Plots of the uncalibrated amplitude and phase against frequency channel: EVN part, VLBA part .
Comments.
Mc: L3 (uppermost channel) missing in the first ~5 hours.
Tr: R1 missing, see notes above.
Jb: L1 no fringes.

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

TSYS against time .
Comments.
Some missing Tsys for WB around 7h.

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 Nt had somewhat lower sensitivity. Torun and Jodrell Bank (Lovell Telescope) were much less sensitive, probably due to the bad weather. (See the EVN Status Table).

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.

Fringe-fit delay solutions .
Comments.
Delay jump in Noto at around 7:30.

Fringe-fit rate solutions .
Comments.

Telescope bandpasses .
Comments.

Calibrated amplitude and phase against time: EVN part, VLBA part. (A priori amplitude calibration and fringe-fit solutions applied.)
Comments.
Mc: no fringes in R2 after ~8:30.

Calibrated amplitude and phase against frequency channel: EVN part, VLBA part .
Comments.
Some bad RFI leaking through.

Naturally weighted dirty map produced before self-cal of:
1830+139: postscript , or FITS .
1851+005: postscript , or FITS .
2145+067: postscript , or FITS .
OT081: postscript , or FITS .
TXS1843: postscript , or FITS .
Comments.

Uniformly weighted dirty map produced before self-cal of:
1830+139: postscript , or FITS .
1851+005: postscript , or FITS .
2145+067: postscript , or FITS .
OT081: postscript , or FITS .
TXS1843: postscript , or FITS .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
1830+139.
1851+005.
2145+067.
OT081.
TXS1843.
Comments.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
1830+139: postscript , or text file .
1851+005: postscript , or text file .
2145+067: postscript , or text file .
OT081: postscript , or text file .
TXS1843: 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 Nt had somewhat lower sensitivity. Torun and Jodrell Bank (Lovell Telescope) were much less sensitive, probably due to the bad weather. (See the EVN Status Table).

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
1830+139 .
1851+005 .
2145+067 .
OT081 .
TXS1843 .
Comments.

Calibrated visibilities and the source model of:
1830+139 .
1851+005 .
2145+067 .
OT081 .
TXS1843 .
Comments.

Calibrated visibilities against u,v distance for:
1830+139. postscript , or png (smaller)
1851+005. postscript , or png (smaller)
2145+067. postscript , or png (smaller)
OT081. postscript , or png (smaller)
TXS1843. postscript , or png (smaller)
Comments.

u,v coverage for:
1830+139. postscript , or png (smaller)
1851+005. postscript , or png (smaller)
2145+067. postscript , or png (smaller)
OT081. postscript , or png (smaller)
TXS1843. postscript , or png (smaller)
Comments.

Crude maps of sources:
1830+139: postscript , or FITS .
1851+005: postscript , or FITS .
2145+067: postscript , or FITS .
OT081: postscript , or FITS .
TXS1843: postscript , or FITS .
Comments.
1851+005 and TXS1843 could not be properly imaged form these data by the pipeline. 1851+005 was not detected on several baselines.