! Started logfile: J1756+1535_S_2017_08_12_pus_uvs.log on Fri May 10 15:04:40 2019 obs J1756+1535_S_2017_08_12_pus_uva.fits ! Reading UV FITS file: J1756+1535_S_2017_08_12_pus_uva.fits ! AN table 1: 14 integrations on 45 of 45 possible baselines. ! Apparent sampling: 0.0380952 visibilities/baseline/integration-bin. ! *** This seems a bit low - see "help observe" on the binwid argument. ! Found source: J1756+1535 ! ! 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 594 lines of history. ! ! Reading 96 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 J1756+1535_S_2017_08_12_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 137 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 2. ! A total of 140 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 3. ! A total of 140 telescope corrections were flagged in sub-array 1. ! ! Correcting IF 4. ! A total of 140 telescope corrections were flagged in sub-array 1. ! ! Fit before self-cal, rms=0.821040Jy sigma=0.005629 ! Fit after self-cal, rms=0.847751Jy sigma=0.004763 ! 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=5.037 mas, bmaj=21.53 mas, bpa=50.18 degrees ! Estimated noise=72271.7 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 = -0.0673178 Jy ! Component: 100 - total flux cleaned = -0.119169 Jy ! Total flux subtracted in 100 components = -0.119169 Jy ! Clean residual min=-0.050295 max=0.049818 Jy/beam ! Clean residual mean=-0.000050 rms=0.022480 Jy/beam ! Combined flux in latest and established models = -0.119169 Jy ! Performing phase self-cal ! Adding 29 model components to the UV plane model. ! The established model now contains 29 components and -0.119169 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.071174Jy sigma=0.000377 ! Fit after self-cal, rms=0.070337Jy sigma=0.000372 ! 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=5.037 mas, bmaj=21.53 mas, bpa=50.18 degrees ! Estimated noise=72271.7 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 = -0.0517851 Jy ! Component: 100 - total flux cleaned = -0.080176 Jy ! Component: 150 - total flux cleaned = -0.0859061 Jy ! Component: 200 - total flux cleaned = -0.0917544 Jy ! Total flux subtracted in 200 components = -0.0917544 Jy ! Clean residual min=-0.026478 max=0.027395 Jy/beam ! Clean residual mean=0.000020 rms=0.008437 Jy/beam ! Combined flux in latest and established models = -0.210924 Jy ! Performing phase self-cal ! Adding 26 model components to the UV plane model. ! The established model now contains 55 components and -0.210924 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Fit before self-cal, rms=0.029885Jy sigma=0.000177 ! Fit after self-cal, rms=0.025680Jy sigma=0.000147 ! Inverting map print "************** FINISHED NATURAL WEIGHTING CLEAN **************" ! ************** FINISHED NATURAL WEIGHTING CLEAN ************** ! gscale true ! Performing overall amplitude self-cal ! ! Correcting IF 1. ! A total of 3 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. ! 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. ! 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=0.025680Jy sigma=0.000147 ! 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 "J1756+1535_S_2017_08_12_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 J1756+1535_S_2017_08_12_pus_uvs.log closed on Fri May 10 15:04:41 2019