! Started logfile: J1957-3845_X_2008_04_02_pus_uvs.log on Sun Feb 21 18:27:50 2010 obs J1957-3845_X_2008_04_02_pus_uva.fits ! Reading UV FITS file: J1957-3845_X_2008_04_02_pus_uva.fits ! AN table 1: 70 integrations on 120 of 120 possible baselines. ! Apparent sampling: 0.10869 visibilities/baseline/integration-bin. ! *** This seems a bit low - see "help observe" on the binwid argument. ! Found source: J1957-3845 ! ! There are 4 IFs, and a total of 4 channels: ! ! IF Channel Frequency Freq offset Number of Overall IF ! origin at origin per channel channels bandwidth ! ------------------------------------------------------------- (Hz) ! 01 1 8.40997e+09 8e+06 1 8e+06 ! 02 2 8.47997e+09 8e+06 1 8e+06 ! 03 3 8.79497e+09 8e+06 1 8e+06 ! 04 4 8.89997e+09 8e+06 1 8e+06 ! ! Polarization(s): RR ! ! Read 2284 lines of history. ! ! Reading 3652 visibilities. select I ! Polarization I is unavailable. ! Selecting polarization: RR, channels: 1..4 ! Reading IF 1 channels: 1..1 ! Reading IF 2 channels: 2..2 ! Reading IF 3 channels: 3..3 ! Reading IF 4 channels: 4..4 print "field_size =",field_size ! field_size = 256 print "field_cell =",field_cell ! field_cell = 0.2 print "taper_size =",taper_size ! taper_size = 70 integer clean_niter clean_niter = 100 float clean_gain clean_gain = 0.03 float dynam dynam = 6.0 float soltime1 soltime1 = 120 float soltime2 soltime2 = 20 float thresh thresh = 0.5 float win_mult win_mult = 1.8 float time_av time_av = 16 float old_peak float new_peak float flux_cutoff mapsize field_size, field_cell ! Map grid = 256x256 pixels with 0.200x0.200 milli-arcsec cellsize. startmod ! Applying default point source starting model. ! Performing phase self-cal ! Adding 1 model components to the UV plane model. ! The established model now contains 1 components and 1 Jy ! ! Correcting IF 1. ! A total of 774 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 2. ! A total of 774 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 3. ! A total of 774 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 4. ! A total of 774 telescope corrections were flagged in sub-array 1. ! ! Fit before self-cal, rms=1.281909Jy sigma=0.010677 ! Fit after self-cal, rms=0.871673Jy sigma=0.007300 ! clrmod: Cleared the established, tentative and continuum models. ! Redundant starting model cleared. uvw 2,-1 ! Uniform weighting binwidth: 2 (pixels). ! Gridding weights will be scaled by errors raised to the power -1. ! Radial weighting is not currently selected. flux_cutoff = imstat(rms) * dynam ! Inverting map and beam ! Your choice of large map pixels excluded 1.55% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.6869 mas, bmaj=2.338 mas, bpa=-8.108 degrees ! Estimated noise=2347.32 mJy/beam. repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam selfcal new_peak = peak(flux) until(new_peak<=flux_cutoff) ! Added new window around map position (0, 0). ! clean: niter=100 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 1.18434 Jy ! Component: 100 - total flux cleaned = 1.56199 Jy ! Total flux subtracted in 100 components = 1.56199 Jy ! Clean residual min=-0.075593 max=0.176672 Jy/beam ! Clean residual mean=0.011857 rms=0.036144 Jy/beam ! Combined flux in latest and established models = 1.56199 Jy ! Performing phase self-cal ! Adding 17 model components to the UV plane model. ! The established model now contains 17 components and 1.56199 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.482481Jy sigma=0.004006 ! Fit after self-cal, rms=0.481851Jy sigma=0.004003 ! Inverting map ! Your choice of large map pixels excluded 1.55% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec print "************** FINISHED UNIFORM WEIGHTING CLEAN **************" ! ************** FINISHED UNIFORM WEIGHTING CLEAN ************** ! uvw 0,-1 ! Uniform weighting is not currently selected. ! Gridding weights will be scaled by errors raised to the power -1. ! Radial weighting is not currently selected. win_mult = win_mult * 1.6 clean_niter = clean_niter * 2 dynam = dynam - 0.5 flux_cutoff = imstat(rms) * dynam ! Inverting map and beam ! Your choice of large map pixels excluded 1.55% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.861 mas, bmaj=3.08 mas, bpa=-10.37 degrees ! Estimated noise=1507.72 mJy/beam. repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam selfcal new_peak = peak(flux) until(new_peak<=flux_cutoff) ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.307273 Jy ! Component: 100 - total flux cleaned = 0.439349 Jy ! Component: 150 - total flux cleaned = 0.500452 Jy ! Component: 200 - total flux cleaned = 0.528978 Jy ! Total flux subtracted in 200 components = 0.528978 Jy ! Clean residual min=-0.060891 max=0.122371 Jy/beam ! Clean residual mean=0.002394 rms=0.027080 Jy/beam ! Combined flux in latest and established models = 2.09097 Jy ! Performing phase self-cal ! Adding 19 model components to the UV plane model. ! The established model now contains 29 components and 2.09097 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.288826Jy sigma=0.002294 ! Fit after self-cal, rms=0.288365Jy sigma=0.002291 ! Inverting map ! Your choice of large map pixels excluded 1.55% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec print "************** FINISHED NATURAL WEIGHTING CLEAN **************" ! ************** FINISHED NATURAL WEIGHTING CLEAN ************** ! gscale true ! Performing overall amplitude self-cal ! ! Correcting IF 1. ! A total of 42 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! BR 1.00* FD 0.94 HH 1.00* HN 1.00* ! KK 0.96 KP 0.96 LA 0.99 MK 0.95 ! NL 1.36 NY 1.00* ON 1.00* OV 1.00 ! PT 0.99 SC 1.07 WZ 1.00* ZC 1.00* ! ! ! Correcting IF 2. ! A total of 42 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! BR 1.00* FD 0.94 HH 1.00* HN 1.00* ! KK 0.94 KP 0.92 LA 0.97 MK 0.94 ! NL 1.33 NY 1.00* ON 1.00* OV 0.97 ! PT 0.98 SC 1.10 WZ 1.00* ZC 1.00* ! ! ! Correcting IF 3. ! A total of 42 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! BR 1.00* FD 0.96 HH 1.00* HN 1.00* ! KK 0.99 KP 0.95 LA 1.01 MK 0.96 ! NL 1.34 NY 1.00* ON 1.00* OV 1.01 ! PT 0.99 SC 1.20 WZ 1.00* ZC 1.00* ! ! ! Correcting IF 4. ! A total of 42 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! BR 1.00* FD 0.95 HH 1.00* HN 1.00* ! KK 0.97 KP 0.94 LA 1.00 MK 0.97 ! NL 1.37 NY 1.00* ON 1.00* OV 1.02 ! PT 0.98 SC 1.31 WZ 1.00* ZC 1.00* ! ! ! Fit before self-cal, rms=0.288365Jy sigma=0.002291 ! Fit after self-cal, rms=0.216512Jy sigma=0.001408 dynam = dynam - 0.5 flux_cutoff = imstat(rms) * dynam ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.888 mas, bmaj=3.243 mas, bpa=-9.754 degrees ! Estimated noise=1553.41 mJy/beam. repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam selfcal new_peak = peak(flux) until(new_peak<=flux_cutoff) ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = -0.0079349 Jy ! Component: 100 - total flux cleaned = -0.00790485 Jy ! Component: 150 - total flux cleaned = -0.00846846 Jy ! Component: 200 - total flux cleaned = -0.00896947 Jy ! Total flux subtracted in 200 components = -0.00896947 Jy ! Clean residual min=-0.030465 max=0.035751 Jy/beam ! Clean residual mean=0.000272 rms=0.009031 Jy/beam ! Combined flux in latest and established models = 2.082 Jy ! Performing phase self-cal ! Adding 8 model components to the UV plane model. ! The established model now contains 32 components and 2.082 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.211979Jy sigma=0.001383 ! Fit after self-cal, rms=0.212421Jy sigma=0.001382 ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec selfcal true, true, soltime1 ! Performing amp+phase self-cal over 120 minute time intervals ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.212421Jy sigma=0.001382 ! Fit after self-cal, rms=0.198156Jy sigma=0.001257 dynam = dynam - 0.75 clean clean_niter,clean_gain ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.8903 mas, bmaj=3.252 mas, bpa=-9.6 degrees ! Estimated noise=1553.57 mJy/beam. ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = -0.000525682 Jy ! Component: 100 - total flux cleaned = -0.000898054 Jy ! Component: 150 - total flux cleaned = -0.000570585 Jy ! Component: 200 - total flux cleaned = -0.00057922 Jy ! Total flux subtracted in 200 components = -0.00057922 Jy ! Clean residual min=-0.015980 max=0.025059 Jy/beam ! Clean residual mean=0.000153 rms=0.005046 Jy/beam ! Combined flux in latest and established models = 2.08142 Jy selfcal ! Performing phase self-cal ! Adding 10 model components to the UV plane model. ! The established model now contains 39 components and 2.08142 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.196283Jy sigma=0.001250 ! Fit after self-cal, rms=0.196245Jy sigma=0.001250 flux_cutoff = imstat(rms) * dynam ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam selfcal new_peak = peak(flux) until(new_peak<=flux_cutoff) ! Added new window around map position (-2.8, 0.8). ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.018467 Jy ! Component: 100 - total flux cleaned = 0.0185133 Jy ! Component: 150 - total flux cleaned = 0.0171057 Jy ! Component: 200 - total flux cleaned = 0.015451 Jy ! Total flux subtracted in 200 components = 0.015451 Jy ! Clean residual min=-0.014781 max=0.011628 Jy/beam ! Clean residual mean=-0.000379 rms=0.003654 Jy/beam ! Combined flux in latest and established models = 2.09687 Jy ! Performing phase self-cal ! Adding 13 model components to the UV plane model. ! The established model now contains 51 components and 2.09687 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.191508Jy sigma=0.001218 ! Fit after self-cal, rms=0.191135Jy sigma=0.001216 ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec selfcal true, true, soltime2 ! Performing amp+phase self-cal over 20 minute time intervals ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.191135Jy sigma=0.001216 ! Fit after self-cal, rms=0.191151Jy sigma=0.001202 clean clean_niter,clean_gain ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.8917 mas, bmaj=3.272 mas, bpa=-9.688 degrees ! Estimated noise=1552.69 mJy/beam. ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.00516915 Jy ! Component: 100 - total flux cleaned = 0.00330775 Jy ! Component: 150 - total flux cleaned = 0.00211641 Jy ! Component: 200 - total flux cleaned = 0.00158355 Jy ! Total flux subtracted in 200 components = 0.00158355 Jy ! Clean residual min=-0.011926 max=0.007599 Jy/beam ! Clean residual mean=-0.000133 rms=0.002603 Jy/beam ! Combined flux in latest and established models = 2.09846 Jy selfcal ! Performing phase self-cal ! Adding 15 model components to the UV plane model. ! The established model now contains 58 components and 2.09846 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.189079Jy sigma=0.001192 ! Fit after self-cal, rms=0.188990Jy sigma=0.001191 flux_cutoff = imstat(rms) * dynam ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam selfcal new_peak = peak(flux) until(new_peak<=flux_cutoff) ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.00160723 Jy ! Component: 100 - total flux cleaned = 0.00111162 Jy ! Component: 150 - total flux cleaned = 0.000884281 Jy ! Component: 200 - total flux cleaned = 0.000884957 Jy ! Total flux subtracted in 200 components = 0.000884957 Jy ! Clean residual min=-0.011120 max=0.006800 Jy/beam ! Clean residual mean=-0.000165 rms=0.002447 Jy/beam ! Combined flux in latest and established models = 2.09934 Jy ! Performing phase self-cal ! Adding 20 model components to the UV plane model. ! The established model now contains 67 components and 2.09934 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.188201Jy sigma=0.001187 ! Fit after self-cal, rms=0.188159Jy sigma=0.001187 ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec uvtaper 0.3,taper_size ! Gaussian taper: value 0.3 at UV radius = 70 mega-wavelengths. win_mult = win_mult * 1.2 selfcal true, true, soltime2 ! Performing amp+phase self-cal over 20 minute time intervals ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.188159Jy sigma=0.001187 ! Fit after self-cal, rms=0.188646Jy sigma=0.001186 clean clean_niter,clean_gain ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=2.879 mas, bmaj=9.352 mas, bpa=-4.223 degrees ! Estimated noise=1810.27 mJy/beam. ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.00112761 Jy ! Component: 100 - total flux cleaned = 0.00152743 Jy ! Component: 150 - total flux cleaned = 0.00162338 Jy ! Component: 200 - total flux cleaned = 0.00171002 Jy ! Total flux subtracted in 200 components = 0.00171002 Jy ! Clean residual min=-0.006176 max=0.005446 Jy/beam ! Clean residual mean=-0.000194 rms=0.001831 Jy/beam ! Combined flux in latest and established models = 2.10105 Jy selfcal ! Performing phase self-cal ! Adding 12 model components to the UV plane model. ! The established model now contains 78 components and 2.10105 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.188458Jy sigma=0.001185 ! Fit after self-cal, rms=0.188359Jy sigma=0.001184 flux_cutoff = imstat(rms) * dynam ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam selfcal new_peak = peak(flux) until(new_peak<=flux_cutoff) ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.000549193 Jy ! Component: 100 - total flux cleaned = 0.000737648 Jy ! Component: 150 - total flux cleaned = 0.000820406 Jy ! Component: 200 - total flux cleaned = 0.000896373 Jy ! Total flux subtracted in 200 components = 0.000896373 Jy ! Clean residual min=-0.006475 max=0.005451 Jy/beam ! Clean residual mean=-0.000240 rms=0.001886 Jy/beam ! Combined flux in latest and established models = 2.10195 Jy ! Performing phase self-cal ! Adding 12 model components to the UV plane model. ! The established model now contains 81 components and 2.10195 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.188383Jy sigma=0.001184 ! Fit after self-cal, rms=0.188328Jy sigma=0.001184 ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec uvtaper 0,0 ! No UV-taper is currently set. win_mult = win_mult / 1.2 print "************** FINISHED AMPLITUDE SELF-CAL **************" ! ************** FINISHED AMPLITUDE SELF-CAL ************** restore ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.8928 mas, bmaj=3.282 mas, bpa=-9.72 degrees ! Estimated noise=1552.48 mJy/beam. ! restore: Substituting estimate of restoring beam from last 'invert'. ! Restoring with beam: 0.8928 x 3.282 at -9.72 degrees (North through East) ! Clean map min=-0.013228 max=1.6469 Jy/beam if(peak(flux) > thresh) selfcal true, true clean clean_niter,clean_gain selfcal flux_cutoff = imstat(rms) * dynam repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam selfcal new_peak = peak(flux) until(new_peak<=flux_cutoff) selfcal true, true end if ! Performing amp+phase self-cal ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.188328Jy sigma=0.001184 ! Fit after self-cal, rms=0.173905Jy sigma=0.001049 ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.8937 mas, bmaj=3.282 mas, bpa=-9.766 degrees ! Estimated noise=1551.59 mJy/beam. ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = -0.00143782 Jy ! Component: 100 - total flux cleaned = -0.00143425 Jy ! Component: 150 - total flux cleaned = -0.00108333 Jy ! Component: 200 - total flux cleaned = -0.00108046 Jy ! Total flux subtracted in 200 components = -0.00108046 Jy ! Clean residual min=-0.008093 max=0.007871 Jy/beam ! Clean residual mean=-0.000063 rms=0.002101 Jy/beam ! Combined flux in latest and established models = 2.10087 Jy ! Performing phase self-cal ! Adding 21 model components to the UV plane model. ! The established model now contains 94 components and 2.10087 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.173187Jy sigma=0.001047 ! Fit after self-cal, rms=0.173155Jy sigma=0.001047 ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.000552982 Jy ! Component: 100 - total flux cleaned = 0.000558796 Jy ! Component: 150 - total flux cleaned = 0.000704712 Jy ! Component: 200 - total flux cleaned = 0.000701661 Jy ! Total flux subtracted in 200 components = 0.000701661 Jy ! Clean residual min=-0.007827 max=0.007369 Jy/beam ! Clean residual mean=-0.000086 rms=0.002011 Jy/beam ! Combined flux in latest and established models = 2.10157 Jy ! Performing phase self-cal ! Adding 19 model components to the UV plane model. ! The established model now contains 100 components and 2.10157 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.172725Jy sigma=0.001045 ! Fit after self-cal, rms=0.172709Jy sigma=0.001045 ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Performing amp+phase self-cal ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.172709Jy sigma=0.001045 ! Fit after self-cal, rms=0.173052Jy sigma=0.001045 print "************** CLEARING MODEL AND STARTING OVER **********" ! ************** CLEARING MODEL AND STARTING OVER ********** clrmod true ! clrmod: Cleared the established and tentative models. uvw 2,-1 ! Uniform weighting binwidth: 2 (pixels). ! Gridding weights will be scaled by errors raised to the power -1. ! Radial weighting is not currently selected. clean clean_niter,clean_gain ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.7027 mas, bmaj=2.469 mas, bpa=-8.179 degrees ! Estimated noise=2367.93 mJy/beam. ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 1.22004 Jy ! Component: 100 - total flux cleaned = 1.60422 Jy ! Component: 150 - total flux cleaned = 1.80125 Jy ! Component: 200 - total flux cleaned = 1.90988 Jy ! Total flux subtracted in 200 components = 1.90988 Jy ! Clean residual min=-0.030005 max=0.065583 Jy/beam ! Clean residual mean=0.004189 rms=0.011513 Jy/beam ! Combined flux in latest and established models = 1.90988 Jy uvw 0,-1 ! Uniform weighting is not currently selected. ! Gridding weights will be scaled by errors raised to the power -1. ! Radial weighting is not currently selected. flux_cutoff = imstat(rms) * dynam ! Adding 29 model components to the UV plane model. ! The established model now contains 29 components and 1.90988 Jy ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.8945 mas, bmaj=3.288 mas, bpa=-9.77 degrees ! Estimated noise=1551.51 mJy/beam. repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam keep new_peak = peak(flux) until(new_peak<=flux_cutoff) ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.0949273 Jy ! Component: 100 - total flux cleaned = 0.140847 Jy ! Component: 150 - total flux cleaned = 0.16598 Jy ! Component: 200 - total flux cleaned = 0.180089 Jy ! Total flux subtracted in 200 components = 0.180089 Jy ! Clean residual min=-0.007574 max=0.011401 Jy/beam ! Clean residual mean=0.000297 rms=0.002744 Jy/beam ! Combined flux in latest and established models = 2.08997 Jy ! Adding 37 model components to the UV plane model. ! The established model now contains 52 components and 2.08997 Jy ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec uvtaper 0.3,taper_size ! Gaussian taper: value 0.3 at UV radius = 70 mega-wavelengths. clean clean_niter,clean_gain ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=2.876 mas, bmaj=9.355 mas, bpa=-4.249 degrees ! Estimated noise=1807.52 mJy/beam. ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.00534265 Jy ! Component: 100 - total flux cleaned = 0.00600112 Jy ! Component: 150 - total flux cleaned = 0.00631287 Jy ! Component: 200 - total flux cleaned = 0.00673268 Jy ! Total flux subtracted in 200 components = 0.00673268 Jy ! Clean residual min=-0.005303 max=0.005376 Jy/beam ! Clean residual mean=0.000102 rms=0.001844 Jy/beam ! Combined flux in latest and established models = 2.0967 Jy flux_cutoff = imstat(rms) * dynam repeat if (peak(flux) > flux_cutoff) peakwin win_mult clean clean_niter,clean_gain flux_cutoff = imstat(rms) * dynam keep new_peak = peak(flux) until(new_peak<=flux_cutoff) ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.000381071 Jy ! Component: 100 - total flux cleaned = 0.000726197 Jy ! Component: 150 - total flux cleaned = 0.000982727 Jy ! Component: 200 - total flux cleaned = 0.00116455 Jy ! Total flux subtracted in 200 components = 0.00116455 Jy ! Clean residual min=-0.005201 max=0.004970 Jy/beam ! Clean residual mean=0.000041 rms=0.001745 Jy/beam ! Combined flux in latest and established models = 2.09787 Jy ! Adding 22 model components to the UV plane model. ! The established model now contains 72 components and 2.09787 Jy ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec uvtaper 0,0 ! No UV-taper is currently set. clean ! Inverting map and beam ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! Estimated beam: bmin=0.8945 mas, bmaj=3.288 mas, bpa=-9.77 degrees ! Estimated noise=1551.51 mJy/beam. ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = -0.000682086 Jy ! Component: 100 - total flux cleaned = -0.000930617 Jy ! Component: 150 - total flux cleaned = -0.000904678 Jy ! Component: 200 - total flux cleaned = -0.000531511 Jy ! Total flux subtracted in 200 components = -0.000531511 Jy ! Clean residual min=-0.006770 max=0.007880 Jy/beam ! Clean residual mean=0.000039 rms=0.002045 Jy/beam ! Combined flux in latest and established models = 2.09734 Jy selfcal ! Performing phase self-cal ! Adding 21 model components to the UV plane model. ! The established model now contains 89 components and 2.09734 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.172831Jy sigma=0.001047 ! Fit after self-cal, rms=0.172439Jy sigma=0.001046 wmodel J1957-3845_X_2008_04_02_pus_map.mod ! Writing 89 model components to file: J1957-3845_X_2008_04_02_pus_map.mod wobs J1957-3845_X_2008_04_02_pus_uvs.fits ! Writing UV FITS file: J1957-3845_X_2008_04_02_pus_uvs.fits wwins J1957-3845_X_2008_04_02_pus_map.win ! wwins: Wrote 2 windows to J1957-3845_X_2008_04_02_pus_map.win x = (field_size-8) * field_cell / 4 addwin -x,x,-x,x clean (field_size*4),0.01 ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! clean: niter=1024 gain=0.01 cutoff=0 ! Component: 050 - total flux cleaned = 8.65931e-05 Jy ! Component: 100 - total flux cleaned = 0.000799106 Jy ! Component: 150 - total flux cleaned = 0.00178919 Jy ! Component: 200 - total flux cleaned = 0.00158383 Jy ! Component: 250 - total flux cleaned = 0.00129196 Jy ! Component: 300 - total flux cleaned = 0.00119726 Jy ! Component: 350 - total flux cleaned = 0.00137144 Jy ! Component: 400 - total flux cleaned = 0.00137096 Jy ! Component: 450 - total flux cleaned = 0.00128821 Jy ! Component: 500 - total flux cleaned = 0.00136706 Jy ! Component: 550 - total flux cleaned = 0.00128983 Jy ! Component: 600 - total flux cleaned = 0.00144009 Jy ! Component: 650 - total flux cleaned = 0.0014402 Jy ! Component: 700 - total flux cleaned = 0.0016564 Jy ! Component: 750 - total flux cleaned = 0.00172685 Jy ! Component: 800 - total flux cleaned = 0.00179638 Jy ! Component: 850 - total flux cleaned = 0.00193292 Jy ! Component: 900 - total flux cleaned = 0.00200018 Jy ! Component: 950 - total flux cleaned = 0.00213135 Jy ! Component: 1000 - total flux cleaned = 0.00219618 Jy ! Total flux subtracted in 1024 components = 0.0023225 Jy ! Clean residual min=-0.003556 max=0.003378 Jy/beam ! Clean residual mean=-0.000022 rms=0.001278 Jy/beam ! Combined flux in latest and established models = 2.09966 Jy keep ! Adding 57 model components to the UV plane model. ! The established model now contains 146 components and 2.09966 Jy wmap "J1957-3845_X_2008_04_02_pus\_map.fits" ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec ! restore: Substituting estimate of restoring beam from last 'invert'. ! Restoring with beam: 0.8945 x 3.288 at -9.77 degrees (North through East) ! Clean map min=-0.0089477 max=1.651 Jy/beam ! Writing clean map to FITS file: J1957-3845_X_2008_04_02_pus_map.fits float peak_flux peak_flux = peak(flux,max) print "The peak flux is",peak_flux ! The peak flux is 1.65101 invert ! Inverting map ! Your choice of large map pixels excluded 1.62% of the data. ! The x-axis pixel size should ideally be below 0.1913 milli-arcsec float image_rms image_rms = imstat(rms) print "The final image rms is",image_rms ! The final image rms is 0.00126924 device "J1957-3845_X_2008_04_02_pus\_map.eps/VPS" ! Attempting to open device: 'J1957-3845_X_2008_04_02_pus_map.eps/VPS' loglevs 100*3*image_rms/peak_flux ! The new contour levels are: ! -0.230629 0.230629 0.461257 0.922515 1.84503 3.69006 7.38012 14.7602 29.5205 59.041 print "clev=",int(3*image_rms*10000)/10000 ! clev= 0.0038 print "peak=",int(1000*peak_flux)/1000 ! peak= 1.651 mapcolor none ! Mapplot colormap: none, contrast: 1 brightness: 0.5. mapplot cln ! restore: Substituting estimate of restoring beam from last 'invert'. ! Restoring with beam: 0.8945 x 3.288 at -9.77 degrees (North through East) ! Clean map min=-0.0089477 max=1.651 Jy/beam mapcolor color, 0.9 ! Mapplot colormap: rainbow, contrast: 0.9 brightness: 0.5. device "J1957-3845_X_2008_04_02_pus\_map.gif/vgif" ! Attempting to open device: 'J1957-3845_X_2008_04_02_pus_map.gif/vgif' mapplot cln quit ! Quitting program ! Log file J1957-3845_X_2008_04_02_pus_uvs.log closed on Sun Feb 21 18:27:51 2010