EVN User Experiment Pipeline Feedback
Last updated: Mon Jun 25 12:14:11 CEST 2007
bignall@jive.nl
General Comments.
(
Brief data summary
and
scan listing
)
L band Network Monitoring Experiment, observed on 8 Mar 2007. Data rate was 256 Mbps (4 X 8 MHz subbands, dual polarization, two-bit sampling).
The pipeline was run twice, swapping the target and phase-reference sources to compare results. In both cases the results of self-calibration seem to be OK but phase referencing worked very poorly. It seems likely this could be a result of unstable phases due to the targets being observed only 13.6 and 16.6 degrees from the Sun. For this pass, the target source 'J2334+0736' was calibrated using the phase-reference source 'J2330+1100'. '3C454.3', '2134+004' and '3C84' were also observed as calibrators/fringe finders.
11 stations participated. Jb had a recording problem due to a power supply causing problems with Mark 5 unit. Most Jb data were lost. Mc started late. On phase jumps by 180 degrees between some scans.
The EVN reliability indicator (ERI) for this experiment was
ERI = 0.79 . ERI* = 0.79 .
(EF=1, WB=1, JB=0.1, ON=1, MC=0.75, NT=1, TR=1, UR=1, HH=1, CM=1, SH=1)
Plots of the autocorrelations
Comments.
plots of the uncalibrated amplitude and phase
against time
Comments.
The uncalibrated visibilities including Jb are OK for the two short periods during the experiment when the recording was working.
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.
Most Jb Tsys measurements seem to be invalid, even when good data were being recorded.
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.
Jb values look like garbage.
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.
Calibrated amplitude and phase against frequency
channel
Comments.
Naturally weighted dirty map (not useful for bright sources)
produced before self-cal of:
J2330+1100: pdf (not available)
, or
FITS (not available)
.
3C84: pdf (not available)
, or
FITS (not available)
.
3C454.3: pdf (not available)
, or
FITS (not available)
.
J2334+0736:
pdf
, or
FITS
.
2134+004: pdf (not available)
, or
FITS (not available)
.
Comments.
Uniformly weighted dirty map (not useful for bright sources)
produced before self-cal of:
J2330+1100: pdf (not available)
, or
FITS (not available)
.
3C84: pdf (not available)
, or
FITS (not available)
.
3C454.3: pdf (not available)
, or
FITS (not available)
.
J2334+0736:
pdf
, or
FITS
.
2134+004: pdf (not available)
, or
FITS (not available)
.
Comments.
Phase corrections applied to a priori calibrated and
fringe-fitted data by self-calibration.
J2330+1100
.
3C84
.
3C454.3
.
J2334+0736 (not available)
.
2134+004
.
Comments.
Amplitude corrections applied to a priori calibrated and
fringe-fitted data by self-calibration.
J2330+1100:
pdf
, or
text file
, or
statistical summary
.
3C84:
pdf
, or
text file
, or
statistical summary
.
3C454.3:
pdf
, or
text file
, or
statistical summary
.
J2334+0736: pdf (not available)
, or
text file (not available)
, or
statistical summary (not available)
.
2134+004:
pdf
, or
text file
, or
statistical summary
.
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:
J2330+1100
.
3C84
.
3C454.3
.
J2334+0736 (not available)
.
2134+004
.
Comments.
Calibrated visibilities and the source model of:
J2330+1100
.
3C84
.
3C454.3
.
J2334+0736 (not available)
.
2134+004
.
Comments.
Calibrated visibilities against u,v distance for:
J2330+1100:
pdf
, or
png
.
3C84:
pdf
, or
png
.
3C454.3:
pdf
, or
png
.
J2334+0736:
pdf
, or
png
.
2134+004:
pdf
, or
png
.
Comments.
u,v coverage for:
J2330+1100:
pdf
, or
png
.
3C84:
pdf
, or
png
.
3C454.3:
pdf
, or
png
.
J2334+0736:
pdf
, or
png
.
2134+004:
pdf
, or
png
.
Comments.
Crude maps of sources:
J2330+1100:
pdf
, or
FITS
.
3C84:
pdf
, or
FITS
.
3C454.3:
pdf
, or
FITS
.
J2334+0736:
pdf
, or
FITS
.
2134+004:
pdf
, or
FITS
.
Comments.