EVN User Experiment Pipeline Feedback
Last updated: Mon Feb 27 15:25:08 CET 2006
reynolds@jive.nl
General Comments.
(
Brief data summary
and
scan listing
)
90cm and 50cm phase-referencing experiment, observed on 11 Nov 2005. Data rate was 128 Mbps (4 X 4 MHz subbands, dual polarization, two-bit sampling). Subbands 1-3 were at P-band (90 cm), subband 4 was at 50 cm. The target source '0218+357' was calibrated using the phase-reference source 'J0226+3421'. '0234+285' and '3C286' were also observed as calibrators. Several other sources mentioned in the 'SU' table were scheduled for Wb local interferometry and did not form part of the VLBI observations.
Wb and Jb could not observe the 50cm part of the spectrum (AIPS IF 4).
12 stations participated - the full VLBA plus Jb and Wb.
The EVN reliability indicator (ERI) for this experiment was
ERI = 1 . ERI* = 1 .
(Jb=1, Wb=1)
Plots of the autocorrelations
Comments.
RFI is severe at some stations.
plots of the uncalibrated amplitude and phase
against time
Comments.
Plots of the uncalibrated amplitude and phase
against frequency channel
Comments.
Significant RFI is visible also in the cross-correlations. Bandpass calibration will be difficult.
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.
Fringe-fit phase solutions
(including Parallactic
Angle correction).
Comments.
Fringe fitting appears to have worked quite well on the short baselines. Longer baselines require further work.
Fringe-fit delay solutions
Comments.
Fringe-fit rate solutions
Comments.
Telescope bandpasses
(not available)
Comments.
Bandpass fitting failed, probably because of excessive RFI. No bandpass correction has been applied.
Calibrated amplitude and phase against time
(a
priori amplitude calibration and fringe-fit solutions applied).
Comments.
Calibrated amplitude and phase against frequency
channel
Comments.
Naturally weighted dirty map (not useful for bright sources)
produced before self-cal of:
0234+285: pdf (not available)
, or
FITS (not available)
.
J0226+3421: pdf (not available)
, or
FITS (not available)
.
3C84: pdf (not available)
, or
FITS (not available)
.
0218+357:
pdf
, or
FITS
.
Comments.
Uniformly weighted dirty map (not useful for bright sources)
produced before self-cal of:
0234+285: pdf (not available)
, or
FITS (not available)
.
J0226+3421: pdf (not available)
, or
FITS (not available)
.
3C84: pdf (not available)
, or
FITS (not available)
.
0218+357:
pdf
, or
FITS
.
Comments.
Phase corrections applied to a priori calibrated and
fringe-fitted data by self-calibration.
0234+285
.
J0226+3421
.
3C84
.
0218+357 (not available)
.
Comments.
Amplitude corrections applied to a priori calibrated and
fringe-fitted data by self-calibration.
0234+285:
pdf
, or
text file
, or
statistical summary
.
J0226+3421:
pdf
, or
text file
, or
statistical summary
.
3C84:
pdf
, or
text file
, or
statistical summary
.
0218+357: pdf (not available)
, or
text file (not available)
, or
statistical summary (not available)
.
Comments.
A priori calibration is poor at several stations. Probably due to the RFI.
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.
Residual closure phase (visibility closure phase with model closure phase subtracted) for:
0234+285
.
J0226+3421
.
3C84
.
0218+357 (not available)
.
Comments.
Calibrated visibilities and the source model of:
0234+285
.
J0226+3421
.
3C84
.
0218+357 (not available)
.
Comments.
Calibrated visibilities against u,v distance for:
0234+285:
pdf
, or
png
.
J0226+3421:
pdf
, or
png
.
3C84:
pdf
, or
png
.
0218+357:
pdf
, or
png
.
Comments.
u,v coverage for:
0234+285:
pdf
, or
png
.
J0226+3421:
pdf
, or
png
.
3C84:
pdf
, or
png
.
0218+357:
pdf
, or
png
.
Comments.
Crude maps of sources:
0234+285:
pdf
, or
FITS
.
J0226+3421:
pdf
, or
FITS
.
3C84:
pdf
, or
FITS
.
0218+357:
pdf
, or
FITS
.
Comments.