SSSC11

Introduction

Logged on 26/09/09 20:59:10

This is a repeat of SSSC1, except the source now has a spectral index of -0.7.

Data products

Imaging uncalibrated data

Logged on 26/09/09 21:08:36

Using Cattery/Calico/calico-view-ms.py, pointing to the SSSC11 MS file. The imager run-time settings were set up to output all four Stokes parameters (I, Q, U and V) with options as shown. Pressed 'Make a dirty image'. There seems to be some cross-polarization leakage here?

Data products

.tdl.conf

calico-view-ms-runtime.png

SSSC11_WSRT.MS.DATA.channel.1ch.img

SSSC11_WSRT.MS.DATA.channel.1ch.fits (header)

1x4x512x512 FITS cube, 4 planes are given below.

Image plane #0.

data range:	-0.209306,4.98427
mean:	-0.00594371
sigma:	0.122497
clipping:	95%
clip range:	-0.209306,0.211658

Image plane #1.

data range:	-0.0363936,0.0611747
mean:	0.000121669
sigma:	0.0059709
clipping:	95%
clip range:	-0.0134308,0.0104849

Image plane #2.

data range:	0,0
mean:	0
sigma:	0
clipping:	95%
clip range:	0,0.000976562

Image plane #3.

data range:	0,0
mean:	0
sigma:	0
clipping:	95%
clip range:	0,0.000976562

Calibration (G-jones) and imaging of residuals

Logged on 26/09/09 21:22:44

Now using Cattery/Calico/calico-wsrt.py, with compile-time options as below, and using the supplied sky model.

Set up the run-time options as shown (run-time-1.png) and pressed 'calibrate G-diagonal terms'.

Then made an image of this MS with the imaging options shown (run-time-2.png). Selected 4 channels (spaced by 16 channels) because of the source's spectral shape.

Data products

calico-wsrt-compile-opts.png

run-time-1.png

.tdl.conf

run-time-2.png

SSSC11_WSRT.MS.CORRECTED_DATA.channel.4ch.fits (header)

4x1x512x512 FITS cube, 4 planes are given below.

Image plane #0.

data range:	-1.82523e-09,1.80026e-09
mean:	8.23022e-12
sigma:	4.42808e-10
clipping:	95%
clip range:	-9.40101e-10,8.19538e-10

Image plane #1.

data range:	-1.82912e-09,1.86932e-09
mean:	-3.25249e-12
sigma:	4.39102e-10
clipping:	95%
clip range:	-8.39498e-10,8.76088e-10

Image plane #2.

data range:	-2.0347e-09,1.92415e-09
mean:	-9.44493e-12
sigma:	4.46345e-10
clipping:	95%
clip range:	-8.94211e-10,8.57114e-10

Image plane #3.

data range:	-2.47405e-09,1.94716e-09
mean:	-1.30636e-11
sigma:	4.21731e-10
clipping:	95%
clip range:	-8.33366e-10,8.20273e-10

SSSC11_WSRT.MS.CORRECTED_DATA.channel.4ch.img

This log was generated by PURR version 1.0.