! Started logfile: /image_prod/ug002_uva//J2311+0201_S_a_dfm.log on Thu Mar 5 06:07:05 2020 float field_size field_size = 1024 float field_cell field_cell = 0.5000 float taper_size taper_size = 20.0 float freq freq = 2.22000 obs /image_prod/ug002_uva//J2311+0201_S_a_uva.fits ! Reading UV FITS file: /image_prod/ug002_uva//J2311+0201_S_a_uva.fits ! AN table 1: 80 integrations on 3 of 3 possible baselines. ! Apparent sampling: 1 visibilities/baseline/integration-bin. ! Found source: J2311+0201 ! ! There are 3 IFs, and a total of 3 channels: ! ! IF Channel Frequency Freq offset Number of Overall IF ! origin at origin per channel channels bandwidth ! ------------------------------------------------------------- (Hz) ! 01 1 2.22e+09 3.2e+07 1 3.2e+07 ! 02 2 2.252e+09 3.2e+07 1 3.2e+07 ! 03 3 2.284e+09 3.2e+07 1 3.2e+07 ! ! Polarization(s): RR ! ! Read 40 lines of history. ! ! Reading 720 visibilities. select rr, 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ! Restricting channel ranges to the available 3 channels. ! Selecting polarization: RR, channels: 1..3 ! Reading IF 1 channels: 1..1 ! Reading IF 2 channels: 2..2 ! Reading IF 3 channels: 3..3 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 ![@/opt64/bin/pima_mupet_01.dfm J2311+0201_S_a] float lim_self lim_self = 120.0 float lim_val lim_va = 1.2 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 print "===============================================================" ! =============================================================== ! print "=== Difmap script: pima_mupet_01.dvm version of 2016.05.19 === " ! === Difmap script: pima_mupet_01.dvm version of 2016.05.19 === ! 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. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Fit before self-cal, rms=1.003219Jy sigma=9.530031 ! Fit after self-cal, rms=0.922511Jy sigma=8.753991 ! 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=24.35 mas, bmaj=127.7 mas, bpa=-39.05 degrees ! Estimated noise=2.81876 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 = 0.062086 Jy ! Component: 100 - total flux cleaned = 0.0695565 Jy ! Total flux subtracted in 100 components = 0.0695565 Jy ! Clean residual min=-0.005834 max=0.005789 Jy/beam ! Clean residual mean=-0.000096 rms=0.002683 Jy/beam ! Combined flux in latest and established models = 0.0695565 Jy ! Performing phase self-cal ! Adding 23 model components to the UV plane model. ! The established model now contains 23 components and 0.0695565 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Fit before self-cal, rms=0.044758Jy sigma=0.413908 ! Fit after self-cal, rms=0.044604Jy sigma=0.411795 ! 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=24.35 mas, bmaj=127.7 mas, bpa=-39.05 degrees ! Estimated noise=2.81877 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 = -0.00353042 Jy ! Component: 100 - total flux cleaned = -0.00578706 Jy ! Component: 150 - total flux cleaned = -0.00714563 Jy ! Component: 200 - total flux cleaned = -0.00835675 Jy ! Total flux subtracted in 200 components = -0.00835675 Jy ! Clean residual min=-0.000943 max=0.000936 Jy/beam ! Clean residual mean=-0.000016 rms=0.000432 Jy/beam ! Combined flux in latest and established models = 0.0611998 Jy ! Performing phase self-cal ! Adding 143 model components to the UV plane model. ! The established model now contains 164 components and 0.0611998 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Fit before self-cal, rms=0.043612Jy sigma=0.400684 ! Fit after self-cal, rms=0.043564Jy sigma=0.399999 ! Inverting map print "============== Finished natural weighting clean ==============" ! ============== Finished natural weighting clean ============== ! restore ! restore: Substituting estimate of restoring beam from last 'invert'. ! Restoring with beam: 24.35 x 127.7 at -39.05 degrees (North through East) ! Clean map min=-0.0067783 max=0.076509 Jy/beam gscale true ! Performing overall amplitude self-cal ! ! Correcting IF 1. ! A total of 240 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! KP 0.00* LA 0.00* PT 0.00* ! ! ! Correcting IF 2. ! A total of 240 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! KP 0.00* LA 0.00* PT 0.00* ! ! ! Correcting IF 3. ! A total of 240 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! KP 0.00* LA 0.00* PT 0.00* ! ! ! Fit before self-cal, rms=0.043564Jy sigma=0.399999 ! 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: /opt64/bin/pima_mupet_01.dfm] ! wmap /image_prod/ug002_uva//J2311+0201_S_a_map.fits ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occured in command: wmap ! wmodel /image_prod/ug002_uva//J2311+0201_S_a_map.mod ! Writing 164 model components to file: /image_prod/ug002_uva//J2311+0201_S_a_map.mod wobs /image_prod/ug002_uva//J2311+0201_S_a_uvs.fits ! Writing UV FITS file: /image_prod/ug002_uva//J2311+0201_S_a_uvs.fits wwins /image_prod/ug002_uva//J2311+0201_S_a_map.win ! wwins: No CLEAN windows to write. ! Error occured in command: wwins ! 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 print "dyn_range= ", int(1000*peak_flux/image_rms)/1000 ! Division by zero error. ! quit ! Quitting program ! Log file /image_prod/ug002_uva//J2311+0201_S_a_dfm.log closed on Thu Mar 5 06:07:06 2020