! Started logfile: /vlbi/uf001/uva//J2349+7517_S_a_dfm.log on Mon Jan 14 06:52:48 2019 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 /vlbi/uf001/uva//J2349+7517_S_a_uva.fits ! Reading UV FITS file: /vlbi/uf001/uva//J2349+7517_S_a_uva.fits ! AN table 1: 73 integrations on 3 of 3 possible baselines. ! AN table 2: 73 integrations on 3 of 3 possible baselines. ! AN table 3: 37 integrations on 1 of 1 possible baselines. ! Apparent sampling: 0.688421 visibilities/baseline/integration-bin. ! Found source: J2349+7517 ! ! 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 44 lines of history. ! ! Reading 981 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 J2349+7517_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. ! A total of 111 telescope corrections were flagged in sub-array 1. ! A total of 111 telescope corrections were flagged in sub-array 2. ! A total of 74 telescope corrections were flagged in sub-array 3. ! ! Correcting IF 2. ! A total of 111 telescope corrections were flagged in sub-array 1. ! A total of 111 telescope corrections were flagged in sub-array 2. ! A total of 74 telescope corrections were flagged in sub-array 3. ! ! Correcting IF 3. ! A total of 111 telescope corrections were flagged in sub-array 1. ! A total of 111 telescope corrections were flagged in sub-array 2. ! A total of 74 telescope corrections were flagged in sub-array 3. ! ! Fit before self-cal, rms=1.006081Jy sigma=20.979182 ! Fit after self-cal, rms=0.954088Jy sigma=20.574527 ! 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=11.74 mas, bmaj=37.17 mas, bpa=-26.77 degrees ! Estimated noise=1.48512 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 = 0.0367684 Jy ! Component: 100 - total flux cleaned = 0.0367741 Jy ! Total flux subtracted in 100 components = 0.0367741 Jy ! Clean residual min=-0.004182 max=0.004140 Jy/beam ! Clean residual mean=-0.000002 rms=0.001641 Jy/beam ! Combined flux in latest and established models = 0.0367741 Jy ! Performing phase self-cal ! Adding 18 model components to the UV plane model. ! The established model now contains 18 components and 0.0367741 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Fit before self-cal, rms=0.043197Jy sigma=0.892869 ! Fit after self-cal, rms=0.041935Jy sigma=0.866271 ! 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=12.77 mas, bmaj=36.71 mas, bpa=-23.32 degrees ! Estimated noise=1.30558 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 = -0.00235802 Jy ! Component: 100 - total flux cleaned = -0.00314176 Jy ! Component: 150 - total flux cleaned = -0.00393362 Jy ! Component: 200 - total flux cleaned = -0.00427801 Jy ! Total flux subtracted in 200 components = -0.00427801 Jy ! Clean residual min=-0.001375 max=0.001373 Jy/beam ! Clean residual mean=-0.000010 rms=0.000429 Jy/beam ! Combined flux in latest and established models = 0.0324961 Jy ! Performing phase self-cal ! Adding 94 model components to the UV plane model. ! The established model now contains 112 components and 0.0324961 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Fit before self-cal, rms=0.041017Jy sigma=0.849636 ! Fit after self-cal, rms=0.040797Jy sigma=0.845637 ! Inverting map ! Added new window around map position (-100, 82.5). ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.00106755 Jy ! Component: 100 - total flux cleaned = 0.00136128 Jy ! Component: 150 - total flux cleaned = 0.001597 Jy ! Component: 200 - total flux cleaned = 0.00170466 Jy ! Total flux subtracted in 200 components = 0.00170466 Jy ! Clean residual min=-0.000918 max=0.001029 Jy/beam ! Clean residual mean=-0.000007 rms=0.000300 Jy/beam ! Combined flux in latest and established models = 0.0342007 Jy ! Performing phase self-cal ! Adding 93 model components to the UV plane model. ! The established model now contains 205 components and 0.0342007 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Fit before self-cal, rms=0.040628Jy sigma=0.843431 ! Fit after self-cal, rms=0.040519Jy sigma=0.839620 ! Inverting map ! Added new window around map position (-69, -80). ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.00049919 Jy ! Component: 100 - total flux cleaned = 0.000425315 Jy ! Component: 150 - total flux cleaned = 0.000321929 Jy ! Component: 200 - total flux cleaned = 0.000372911 Jy ! Total flux subtracted in 200 components = 0.000372911 Jy ! Clean residual min=-0.000828 max=0.000872 Jy/beam ! Clean residual mean=-0.000008 rms=0.000250 Jy/beam ! Combined flux in latest and established models = 0.0345736 Jy ! Performing phase self-cal ! Adding 89 model components to the UV plane model. ! The established model now contains 292 components and 0.0345736 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Fit before self-cal, rms=0.040399Jy sigma=0.837781 ! Fit after self-cal, rms=0.040387Jy sigma=0.836865 ! Inverting map ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.000521455 Jy ! Component: 100 - total flux cleaned = 0.000488732 Jy ! Component: 150 - total flux cleaned = 0.000624955 Jy ! Component: 200 - total flux cleaned = 0.000629893 Jy ! Total flux subtracted in 200 components = 0.000629893 Jy ! Clean residual min=-0.000889 max=0.000810 Jy/beam ! Clean residual mean=-0.000008 rms=0.000233 Jy/beam ! Combined flux in latest and established models = 0.0352035 Jy ! Performing phase self-cal ! Adding 90 model components to the UV plane model. ! The established model now contains 377 components and 0.0352035 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Fit before self-cal, rms=0.040320Jy sigma=0.835877 ! Fit after self-cal, rms=0.040243Jy sigma=0.834320 ! Inverting map print "============== Finished natural weighting clean ==============" ! ============== Finished natural weighting clean ============== ! restore ! restore: Substituting estimate of restoring beam from last 'invert'. ! Restoring with beam: 12.77 x 36.71 at -23.32 degrees (North through East) ! Clean map min=-0.0043832 max=0.039339 Jy/beam gscale true ! Performing overall amplitude self-cal ! ! Correcting IF 1. ! A total of 108 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* KP 0.00* PT 0.00* ! ! A total of 108 telescope corrections were flagged in sub-array 2. ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* LA 0.00* PT 0.00* ! ! Telescope amplitude corrections in sub-array 3: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 2. ! A total of 108 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* KP 0.00* PT 0.00* ! ! A total of 108 telescope corrections were flagged in sub-array 2. ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* LA 0.00* PT 0.00* ! ! Telescope amplitude corrections in sub-array 3: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 3. ! A total of 108 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* KP 0.00* PT 0.00* ! ! A total of 108 telescope corrections were flagged in sub-array 2. ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* LA 0.00* PT 0.00* ! ! Telescope amplitude corrections in sub-array 3: ! BR 0.00* OV 0.00* ! ! ! Fit before self-cal, rms=0.040243Jy sigma=0.834320 ! 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 /vlbi/uf001/uva//J2349+7517_S_a_map.fits ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occured in command: wmap ! wmodel /vlbi/uf001/uva//J2349+7517_S_a_map.mod ! Writing 377 model components to file: /vlbi/uf001/uva//J2349+7517_S_a_map.mod wobs /vlbi/uf001/uva//J2349+7517_S_a_uvs.fits ! Writing UV FITS file: /vlbi/uf001/uva//J2349+7517_S_a_uvs.fits wwins /vlbi/uf001/uva//J2349+7517_S_a_map.win ! wwins: Wrote 2 windows to /vlbi/uf001/uva//J2349+7517_S_a_map.win 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 /vlbi/uf001/uva//J2349+7517_S_a_dfm.log closed on Mon Jan 14 06:52:49 2019