! Started logfile: J0856-1105_S_2017_04_28_pus_uvs.log on Thu May 2 16:22:05 2019 obs J0856-1105_S_2017_04_28_pus_uva.fits ! Reading UV FITS file: J0856-1105_S_2017_04_28_pus_uva.fits ! AN table 1: 42 integrations on 45 of 45 possible baselines. ! Apparent sampling: 0.0507937 visibilities/baseline/integration-bin. ! *** This seems a bit low - see "help observe" on the binwid argument. ! Found source: J0856-1105 ! ! 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 2.23588e+09 3.2e+07 1 3.2e+07 ! 02 2 2.26788e+09 3.2e+07 1 3.2e+07 ! 03 3 2.29988e+09 3.2e+07 1 3.2e+07 ! 04 4 2.36388e+09 3.2e+07 1 3.2e+07 ! ! Polarization(s): RR ! ! Read 671 lines of history. ! ! Reading 384 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 = 1024 print "field_cell =",field_cell ! field_cell = 0.5 print "taper_size =",taper_size ! taper_size = 20 ![@muppet J0856-1105_S_2017_04_28_pus] 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 = 1024x1024 pixels with 0.500x0.500 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 339 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 2. ! A total of 339 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 3. ! A total of 339 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 4. ! A total of 420 telescope corrections were flagged in sub-array 1. ! ! Fit before self-cal, rms=0.711842Jy sigma=0.003931 ! Fit after self-cal, rms=0.678889Jy sigma=0.003665 ! 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 ! Estimated beam: bmin=2.883 mas, bmaj=47.68 mas, bpa=-40.41 degrees ! Estimated noise=10128.8 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=100 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.25474 Jy ! Component: 100 - total flux cleaned = 0.299846 Jy ! Total flux subtracted in 100 components = 0.299846 Jy ! Clean residual min=-0.019328 max=0.019217 Jy/beam ! Clean residual mean=-0.000017 rms=0.010290 Jy/beam ! Combined flux in latest and established models = 0.299846 Jy ! Performing phase self-cal ! Adding 8 model components to the UV plane model. ! The established model now contains 8 components and 0.299846 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.120142Jy sigma=0.000619 ! Fit after self-cal, rms=0.120192Jy sigma=0.000619 ! Inverting map 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 ! Estimated beam: bmin=3.21 mas, bmaj=42.55 mas, bpa=-40.75 degrees ! Estimated noise=8490.06 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 = -0.0132889 Jy ! Component: 100 - total flux cleaned = -0.0152927 Jy ! Component: 150 - total flux cleaned = -0.00935251 Jy ! Component: 200 - total flux cleaned = -0.00517686 Jy ! Total flux subtracted in 200 components = -0.00517686 Jy ! Clean residual min=-0.010214 max=0.010313 Jy/beam ! Clean residual mean=-0.000007 rms=0.003960 Jy/beam ! Combined flux in latest and established models = 0.294669 Jy ! Performing phase self-cal ! Adding 47 model components to the UV plane model. ! The established model now contains 53 components and 0.294669 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.115603Jy sigma=0.000588 ! Fit after self-cal, rms=0.115942Jy sigma=0.000587 ! Inverting map print "************** FINISHED NATURAL WEIGHTING CLEAN **************" ! ************** FINISHED NATURAL WEIGHTING CLEAN ************** ! gscale true ! Performing overall amplitude self-cal ! ! Correcting IF 1. ! A total of 81 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! BR 0.00* FD 0.00* HN 0.00* KP 0.00* ! LA 0.00* MK 0.00* NL 0.00* OV 0.00* ! PT 0.00* SC 0.00* ! ! ! Correcting IF 2. ! A total of 81 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! BR 0.00* FD 0.00* HN 0.00* KP 0.00* ! LA 0.00* MK 0.00* NL 0.00* OV 0.00* ! PT 0.00* SC 0.00* ! ! ! Correcting IF 3. ! A total of 81 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! BR 0.00* FD 0.00* HN 0.00* KP 0.00* ! LA 0.00* MK 0.00* NL 0.00* OV 0.00* ! PT 0.00* SC 0.00* ! ! ! Correcting IF 4. ! Telescope amplitude corrections in sub-array 1: ! BR 0.00* FD 0.00* HN 0.00* KP 0.00* ! LA 0.00* MK 0.00* NL 0.00* OV 0.00* ! PT 0.00* SC 0.00* ! ! ! Fit before self-cal, rms=0.115942Jy sigma=0.000587 ! Fit after self-cal, rms=0.000000Jy sigma=-nan dynam = dynam - 0.5 flux_cutoff = imstat(rms) * dynam ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occurred in function: imstat(). ![Exited script file: muppet] ! wmap "J0856-1105_S_2017_04_28_pus\_map.fits" ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occured in command: wmap ! float peak_flux peak_flux = peak(flux,max) ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occurred in function: peak(). ! print "The peak flux is",peak_flux ! The peak flux is 0 invert ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occured in command: invert ! float image_rms image_rms = imstat(rms) ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occurred in function: imstat(). ! print "The final image rms is",image_rms ! The final image rms is 0 loglevs 100*3*image_rms/peak_flux ! Division by zero error. ! print "clev=",int(3*image_rms*10000)/10000 ! clev= 0 print "peak=",int(1000*peak_flux)/1000 ! peak= 0 mapcolor none ! Mapplot colormap: none, contrast: 1 brightness: 0.5. mapplot cln ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occured in command: mapplot ! quit ! Quitting program ! Log file J0856-1105_S_2017_04_28_pus_uvs.log closed on Thu May 2 16:22:05 2019