Summary of the DQO observations of 29/2/96 ------------------------------------------ Array: 1.5B 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% 0.1% 0.2% 0.1% 1934-638.2368 0.7% 0.0% 0.3% 0.4% 1934-638.4800 0.0% 0.0% 0.0% 0.0% 1934-638.8640 0.1% 0.1% 0.1% 0.1% 1934_a.1344 0.1% 0.0% 0.0% 0.1% 1934_a.2368 0.1% 0.0% 0.0% 0.1% 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 0.1% 0.6% 0.4% 0.3% 1934_b.2368 0.2% 0.2% 0.1% 0.2% 1934_b.4800 0.2% 0.3% 0.2% 0.4% 1934_b.8640 0.0% 0.2% 0.0% 0.1% ---------------------------------------------- Closure phase statistics for the point sources File Th.Phase Sigmas ---- -------- ------ 1934-638.1344 0.016 17.00 1934-638.2368 0.022 4.23 1934-638.4800 0.033 1.52 1934-638.8640 0.064 3.55 1934_a.1344 0.015 26.47 1934_a.2368 0.027 4.37 1934_a.4800 0.032 1.69 1934_a.8640 0.081 3.12 --------------------------------------- Post-reduction flagging statistics ---------------------------------- File XX% YY% XY% YX% ---- --- --- --- --- 1934-638.1344-cal 47.5% 47.5% 47.5% 47.5% 1934-638.2368-cal 41.7% 41.7% 41.7% 41.7% 1934-638.4800-cal 41.7% 41.7% 41.7% 41.7% 1934-638.8640-cal 39.2% 39.2% 39.2% 39.2% 1934_a.1344-cal 36.4% 36.4% 36.4% 36.4% 1934_a.2368-cal 32.1% 32.1% 32.1% 32.1% 1934_a.4800-cal 32.7% 32.7% 32.7% 32.7% 1934_a.8640-cal 30.3% 30.3% 30.3% 30.3% 1934_b.1344-cal 34.5% 34.5% 34.5% 34.5% 1934_b.2368-cal 31.7% 31.7% 31.7% 31.7% 1934_b.4800-cal 34.2% 34.2% 34.2% 34.2% 1934_b.8640-cal 31.5% 31.5% 31.5% 31.5% ======================================================================== File Th. RMS Sigmas D.R. Pk Val ---- ------- ------ ---- ------ 1934-638.1344-low.icln 4.26E-04 4.95 7106 15.009 1934-638.1344-low.qmap 4.26E-04 4.29 5 0.009 1934-638.1344-low.umap 4.26E-04 4.74 4 0.009 1934-638.1344-low.vmap 4.26E-04 2.63 5 0.006 1934-638.2368-low.icln 6.33E-04 4.88 3748 11.583 1934-638.2368-low.qmap 6.33E-04 2.48 5 0.008 1934-638.2368-low.umap 6.33E-04 2.15 5 0.006 1934-638.2368-low.vmap 6.33E-04 1.88 5 0.006 1934-638.4800-low.icln 4.33E-04 2.72 4952 5.827 1934-638.4800-low.qmap 4.33E-04 1.29 5 0.003 1934-638.4800-low.umap 4.33E-04 1.46 4 0.003 1934-638.4800-low.vmap 4.33E-04 1.27 4 0.002 1934-638.8640-low.icln 5.49E-04 1.07 4831 2.836 1934-638.8640-low.qmap 5.49E-04 0.89 4 0.002 1934-638.8640-low.umap 5.49E-04 1.03 4 0.002 1934-638.8640-low.vmap 5.49E-04 0.84 5 0.002 1934-638.1344-full.icln 1.75E-04 21.72 3943 15.007 1934-638.1344-full.qmap 1.75E-04 6.00 5 0.005 1934-638.1344-full.umap 1.75E-04 6.35 5 0.005 1934-638.1344-full.vmap 1.75E-04 3.81 5 0.003 1934-638.2368-full.icln 2.08E-04 10.47 5311 11.582 1934-638.2368-full.qmap 2.08E-04 4.34 5 0.005 1934-638.2368-full.umap 2.08E-04 3.69 5 0.004 1934-638.2368-full.vmap 2.08E-04 3.04 6 0.004 1934-638.4800-full.icln 1.33E-04 4.87 9005 5.820 1934-638.4800-full.qmap 1.33E-04 1.63 6 0.001 1934-638.4800-full.umap 1.33E-04 1.59 5 0.001 1934-638.4800-full.vmap 1.33E-04 1.43 5 0.001 1934-638.8640-full.icln 1.35E-04 3.52 5979 2.834 1934-638.8640-full.qmap 1.35E-04 0.92 4 0.001 1934-638.8640-full.umap 1.35E-04 1.05 4 0.001 1934-638.8640-full.vmap 1.35E-04 1.10 5 0.001 1934_a.1344-full.icln 1.61E-04 44.97 1815 13.122 1934_a.1344-full.qmap 1.61E-04 9.78 9 0.014 1934_a.1344-full.umap 1.61E-04 8.22 5 0.007 1934_a.1344-full.vmap 1.61E-04 6.18 8 0.008 1934_a.2368-full.icln 1.86E-04 27.54 1647 8.434 1934_a.2368-full.qmap 1.86E-04 60.86 15 0.164 1934_a.2368-full.umap 1.86E-04 47.59 8 0.070 1934_a.2368-full.vmap 1.86E-04 43.76 20 0.165 1934_a.4800-full.icln 1.21E-04 5.90 7333 5.239 1934_a.4800-full.qmap 1.21E-04 3.89 16 0.008 1934_a.4800-full.umap 1.21E-04 1.92 5 0.001 1934_a.4800-full.vmap 1.21E-04 1.74 9 0.002 1934_a.8640-full.icln 1.22E-04 6.45 2646 2.080 1934_a.8640-full.qmap 1.22E-04 18.00 15 0.034 1934_a.8640-full.umap 1.22E-04 8.80 8 0.009 1934_a.8640-full.vmap 1.22E-04 14.91 15 0.028 1934_b.1344-full.imap 1.52E-04 6.96 6 0.006 1934_b.1344-full.qmap 1.52E-04 4.28 3 0.002 1934_b.1344-full.umap 1.52E-04 1.89 4 0.001 1934_b.1344-full.vmap 1.52E-04 1.19 5 0.001 1934_b.2368-full.imap 1.80E-04 1.87 4 0.001 1934_b.2368-full.qmap 1.80E-04 0.95 4 0.001 1934_b.2368-full.umap 1.80E-04 1.02 4 0.001 1934_b.2368-full.vmap 1.80E-04 0.96 4 0.001 1934_b.4800-full.imap 1.19E-04 1.18 8 0.001 1934_b.4800-full.qmap 1.19E-04 1.05 5 0.001 1934_b.4800-full.umap 1.19E-04 1.02 4 0.000 1934_b.4800-full.vmap 1.19E-04 0.94 5 0.001 1934_b.8640-full.imap 1.20E-04 0.96 4 0.001 1934_b.8640-full.qmap 1.20E-04 1.02 5 0.001 1934_b.8640-full.umap 1.20E-04 1.01 4 0.001 1934_b.8640-full.vmap 1.20E-04 1.02 4 0.001 ======================================================================== 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