EVN User Experiment Pipeline Feedback
Last updated: Fri Oct 19 12:44:01 CEST 2007
bignall@jive.nl
General Comments.
(
Brief data summary
and
scan listing
)
Spectral line phase-referencing experiment at 1612 MHz, observed on 10 Jun 2007. Data rate was 128 Mbps (1 X 1 MHz subband and 3 X 4 MHz subbands, each sampled at 8 Ms/sec, dual polarization, two-bit sampling). The target source 'IRAS1828' was calibrated using the phase-reference source 'J1832-10'. 'J1743-03' was the fringe finder. The data were correlated in two passes. The plots below show data from the continuum pass (3 subbands, each with 32 frequency points).
8 stations participated. Jb had no fringes for LCP in the lowest subband in this pass (corresponding to BBC #3). Tr had a problem throughout the 18cm session with very low sensitivity in RCP for the highest subband (corresponding to BBC #7).
The EVN reliability indicator (ERI) for this experiment was
ERI = 0.93 . ERI* = 0.93 .
(EF=1, WB=1, MC=1, NT=1, TR=0.88, HH=1, CM=1, JB=0.88)
Plots of the autocorrelations
Comments.
plots of the uncalibrated amplitude and phase
against time
Comments.
Plots of the uncalibrated amplitude and phase
against frequency channel
Comments.
Cm has no signal in the highest subband.
The uncalibrated amplitude and phase of the crosshand
correlations against frequency channel
(not available)
Comments.
TSYS against time
Comments.
Wb: some anomalously high values, may need flagging.
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-fit delay solutions
Comments.
Apart from Ef-Wb, the pipeline FRING did not find many solutions on J1832-10. Probably the IFs will need to be averaged for fringe-fitting on J1832-10.
Fringe-fit rate solutions
Comments.
Telescope bandpasses
Comments.
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:
J1743-03: pdf (not available)
, or
FITS (not available)
.
IRAS1828:
pdf
, or
FITS
.
J1832-10: pdf (not available)
, or
FITS (not available)
.
Comments.
Uniformly weighted dirty map (not useful for bright sources)
produced before self-cal of:
J1743-03: pdf (not available)
, or
FITS (not available)
.
IRAS1828:
pdf
, or
FITS
.
J1832-10: pdf (not available)
, or
FITS (not available)
.
Comments.
Phase corrections applied to a priori calibrated and
fringe-fitted data by self-calibration.
J1743-03
.
IRAS1828 (not available)
.
J1832-10
.
Comments.
Amplitude corrections applied to a priori calibrated and
fringe-fitted data by self-calibration.
J1743-03:
pdf
, or
text file
, or
statistical summary
.
IRAS1828: pdf (not available)
, or
text file (not available)
, or
statistical summary (not available)
.
J1832-10: pdf (not available)
, or
text file (not available)
, or
statistical summary (not available)
.
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.
Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J1743-03
.
IRAS1828 (not available)
.
J1832-10 (not available)
.
Comments.
Calibrated visibilities and the source model of:
J1743-03
.
IRAS1828 (not available)
.
J1832-10 (not available)
.
Comments.
Calibrated visibilities against u,v distance for:
J1743-03:
pdf
, or
png
.
IRAS1828:
pdf
, or
png
.
J1832-10: pdf (not available)
, or
png (not available)
.
Comments.
u,v coverage for:
J1743-03:
pdf
, or
png
.
IRAS1828:
pdf
, or
png
.
J1832-10: pdf (not available)
, or
png (not available)
.
Comments.
Crude maps of sources:
J1743-03:
pdf
, or
FITS
.
IRAS1828:
pdf
, or
FITS
.
J1832-10: pdf (not available)
, or
FITS (not available)
.
Comments.
Mapping failed for J1832-10 because of too low S/N in the fringe-fitting procedure used in the pipeline.