Summary of the DQO observations of 4/3/96 ----------------------------------------- Array: 0.122 Fields: Calibrator 1934-638 Offset Calibrator 1934_a Blank Field 1934_b Frequencies: 1344 2368 4800 8640 MHz The offset calibrator field was offset in RA,DEC from 1934-638 by 0,420 arcsec at 1344 MHz 0,420 arcsec at 2368 MHz 0,120 arcsec at 4800 MHz 0,120 arcsec at 8640 MHz See the end of this document for an explanation of terms and the filenaming convention. ------------------------------------------------------------------------ Flagging statistics after ATLOD ------------------------------- File XX% YY% XY% YX% ---- --- --- --- --- 1934-638.1344 0.2% 0.2% 0.1% 0.2% 1934-638.2368 0.2% 0.1% 0.2% 0.1% 1934-638.4800 0.1% 0.2% 0.1% 0.1% 1934-638.8640 0.1% 0.1% 0.1% 0.1% 1934_a.1344 0.0% 0.5% 0.2% 0.3% 1934_a.2368 0.0% 0.0% 0.0% 0.0% 1934_a.4800 0.0% 0.0% 0.0% 0.0% 1934_a.8640 0.1% 0.0% 0.0% 0.0% 1934_b.1344 0.3% 0.4% 0.3% 0.3% 1934_b.2368 0.3% 0.2% 0.2% 0.3% 1934_b.4800 0.4% 0.1% 0.2% 0.3% 1934_b.8640 0.1% 0.1% 0.1% 0.1% ---------------------------------------------- Closure phase statistics for the point sources File Th.Phase Sigmas ---- -------- ------ 1934-638.1344 0.014 39.79 1934-638.2368 0.018 11.78 1934-638.4800 0.033 1.91 1934-638.8640 0.064 4.47 1934_a.1344 0.013 39.31 1934_a.2368 0.022 9.09 1934_a.4800 0.032 1.88 1934_a.8640 0.083 3.58 --------------------------------------- Post-reduction flagging statistics ---------------------------------- File XX% YY% XY% YX% ---- --- --- --- --- 1934-638.1344-cal 18.7% 18.7% 18.7% 18.7% 1934-638.2368-cal 15.3% 15.3% 15.3% 15.3% 1934-638.4800-cal 12.1% 12.1% 12.1% 12.1% 1934-638.8640-cal 7.1% 7.1% 7.1% 7.1% 1934_a.1344-cal 7.6% 7.6% 7.6% 7.6% 1934_a.2368-cal 0.6% 0.6% 0.6% 0.6% 1934_a.4800-cal 5.8% 5.8% 5.8% 5.8% 1934_a.8640-cal 4.2% 4.2% 4.2% 4.2% 1934_b.1344-cal 9.5% 9.5% 9.5% 9.5% 1934_b.2368-cal 5.0% 5.0% 5.0% 5.0% 1934_b.4800-cal 8.3% 8.3% 8.3% 8.3% 1934_b.8640-cal 2.4% 2.4% 2.4% 2.4% ======================================================================== File Th. RMS Sigmas D.R. Pk Val ---- ------- ------ ---- ------ 1934-638.1344-low.icln 2.94E-04 8.53 5971 14.991 1934-638.1344-low.qmap 2.94E-04 10.80 3 0.009 1934-638.1344-low.umap 2.94E-04 7.68 3 0.007 1934-638.1344-low.vmap 2.94E-04 13.19 4 0.016 1934-638.2368-low.icln 5.75E-04 4.94 4075 11.568 1934-638.2368-low.qmap 5.75E-04 2.88 3 0.005 1934-638.2368-low.umap 5.75E-04 2.69 4 0.006 1934-638.2368-low.vmap 5.75E-04 1.76 3 0.003 1934-638.4800-low.icln 4.16E-04 1.45 9655 5.814 1934-638.4800-low.qmap 4.16E-04 2.14 6 0.005 1934-638.4800-low.umap 4.16E-04 3.41 3 0.005 1934-638.4800-low.vmap 4.16E-04 3.91 3 0.005 1934-638.8640-low.icln 2.92E-04 1.25 7775 2.831 1934-638.8640-low.qmap 2.92E-04 1.13 5 0.002 1934-638.8640-low.umap 2.92E-04 1.19 4 0.001 1934-638.8640-low.vmap 2.92E-04 1.19 4 0.001 1934-638.1344-full.icln 9.72E-05 17.63 8749 14.994 1934-638.1344-full.qmap 9.72E-05 17.46 3 0.005 1934-638.1344-full.umap 9.72E-05 10.52 4 0.004 1934-638.1344-full.vmap 9.72E-05 33.37 3 0.010 1934-638.2368-full.icln 1.09E-04 65.47 1616 11.520 1934-638.2368-full.qmap 1.09E-04 4.36 8 0.004 1934-638.2368-full.umap 1.09E-04 5.33 7 0.004 1934-638.2368-full.vmap 1.09E-04 2.90 7 0.002 1934-638.4800-full.icln 9.05E-05 6.56 9808 5.823 1934-638.4800-full.qmap 9.05E-05 7.05 3 0.002 1934-638.4800-full.umap 9.05E-05 11.58 2 0.002 1934-638.4800-full.vmap 9.05E-05 21.90 2 0.004 1934-638.8640-full.icln 9.29E-05 15.17 2011 2.835 1934-638.8640-full.qmap 9.29E-05 2.52 3 0.001 1934-638.8640-full.umap 9.29E-05 2.76 4 0.001 1934-638.8640-full.vmap 9.29E-05 1.71 4 0.001 1934_a.1344-full.icln 9.22E-05 447.96 315 13.025 1934_a.1344-full.qmap 9.22E-05 34.86 3 0.010 1934_a.1344-full.umap 9.22E-05 33.00 3 0.008 1934_a.1344-full.vmap 9.22E-05 53.30 2 0.011 1934_a.2368-full.icln 1.00E-04 299.96 273 8.190 1934_a.2368-full.qmap 1.00E-04 270.62 6 0.160 1934_a.2368-full.umap 1.00E-04 195.38 4 0.070 1934_a.2368-full.vmap 1.00E-04 185.40 3 0.065 1934_a.4800-full.icln 8.78E-05 4.19 14228 5.238 1934_a.4800-full.qmap 8.78E-05 35.27 3 0.010 1934_a.4800-full.umap 8.78E-05 34.60 2 0.008 1934_a.4800-full.vmap 8.78E-05 66.67 2 0.014 1934_a.8640-full.icln 9.21E-05 13.53 1658 2.067 1934_a.8640-full.qmap 9.21E-05 55.70 6 0.033 1934_a.8640-full.umap 9.21E-05 25.07 4 0.009 1934_a.8640-full.vmap 9.21E-05 45.99 3 0.014 1934_b.1344-full.imap 9.01E-05 33.11 4 0.011 1934_b.1344-full.qmap 9.01E-05 47.05 2 0.010 1934_b.1344-full.umap 9.01E-05 14.83 2 0.003 1934_b.1344-full.vmap 9.01E-05 23.88 2 0.004 1934_b.2368-full.imap 9.98E-05 10.04 2 0.002 1934_b.2368-full.qmap 9.98E-05 1.84 4 0.001 1934_b.2368-full.umap 9.98E-05 1.30 4 0.000 1934_b.2368-full.vmap 9.98E-05 1.25 4 0.000 1934_b.4800-full.imap 8.79E-05 2.10 5 0.001 1934_b.4800-full.qmap 8.79E-05 13.91 3 0.003 1934_b.4800-full.umap 8.79E-05 15.15 3 0.004 1934_b.4800-full.vmap 8.79E-05 36.54 3 0.008 1934_b.8640-full.imap 9.07E-05 0.99 4 0.000 1934_b.8640-full.qmap 9.07E-05 0.93 4 0.000 1934_b.8640-full.umap 9.07E-05 1.09 4 0.000 1934_b.8640-full.vmap 9.07E-05 0.96 4 0.000 ======================================================================== Explanation of Terms: --------------------- XX%,YY%,XY%,YY% Percentage of XX, XY, YX and YY correlations flagged (excluding on-line flagging and shadowing). Th.Phase The theoretical closure phase (in degrees) based on thermal noise arguments (for the 5-minute time averaging used). Th. RMS The theoretical RMS in an image based on thermal noise arguments. Sigmas The factor by which the relevant meausre exceeds either of the above two theoretical levels. Ideally this should be 1. D.R. Dynamic range of an image, defined as the ratio of the peak absolute value divided by the RMS. For the CLEANed Stokes-I images of the calibrators, the RMS is evaluated outside the inner quarter of the image. Otherwise the RMS is evaluated over the entire image. Pk Val Peak value in an image in Jy. Explanation of File names: -------------------------- File names are of the form FIELD.FREQ Raw visibility data, giving the field name and observing frequency. FIELD.FREQ-cal Calibrated/flagged visibility data. FIELD.FREQ-low.TYPE Low resolution image, imaging the entire primary beam. TYPE gives the Stokes parameter and whether the image is CLEANed ("cln") or a dirty image ("map"). FIELD.FREQ-full.TYPE Full resolution image, but imaging only a subportion of the primary beam. TYPE is as above. Robin Wark