! Started logfile: .//J1238+5249_X_dfm.log on Sat Oct 20 23:52:37 2018 float field_size field_size = 1024 float field_cell field_cell = 0.2000 float taper_size taper_size = 70.0 float freq freq = 7.39200 obs .//J1238+5249_X_uva.fits ! Reading UV FITS file: .//J1238+5249_X_uva.fits ! AN table 1: 6 integrations on 3 of 3 possible baselines. ! AN table 2: 6 integrations on 1 of 1 possible baselines. ! Apparent sampling: 1 visibilities/baseline/integration-bin. ! Found source: J1238+5249 ! ! There are 8 IFs, and a total of 8 channels: ! ! IF Channel Frequency Freq offset Number of Overall IF ! origin at origin per channel channels bandwidth ! ------------------------------------------------------------- (Hz) ! 01 1 7.392e+09 3.2e+07 1 3.2e+07 ! 02 2 7.424e+09 3.2e+07 1 3.2e+07 ! 03 3 7.456e+09 3.2e+07 1 3.2e+07 ! 04 4 7.552e+09 3.2e+07 1 3.2e+07 ! 05 5 7.744e+09 3.2e+07 1 3.2e+07 ! 06 6 7.776e+09 3.2e+07 1 3.2e+07 ! 07 7 7.808e+09 3.2e+07 1 3.2e+07 ! 08 8 7.84e+09 3.2e+07 1 3.2e+07 ! ! Polarization(s): RR ! ! Read 76 lines of history. ! ! Reading 192 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 8 channels. ! Selecting polarization: RR, channels: 1..8 ! Reading IF 1 channels: 1..1 ! Reading IF 2 channels: 2..2 ! Reading IF 3 channels: 3..3 ! Reading IF 4 channels: 4..4 ! Reading IF 5 channels: 5..5 ! Reading IF 6 channels: 6..6 ! Reading IF 7 channels: 7..7 ! Reading IF 8 channels: 8..8 print "field_size =", field_size ! field_size = 1024 print "field_cell =", field_cell ! field_cell = 0.2 print "taper_size =", taper_size ! taper_size = 70 ![@/opt64/bin/pima_mupet_01.dfm J1238+5249_X] 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 0.200x0.200 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 12 telescope corrections were flagged in sub-array 2. ! ! Correcting IF 2. ! A total of 12 telescope corrections were flagged in sub-array 2. ! ! Correcting IF 3. ! A total of 12 telescope corrections were flagged in sub-array 2. ! ! Correcting IF 4. ! A total of 12 telescope corrections were flagged in sub-array 2. ! ! Correcting IF 5. ! A total of 12 telescope corrections were flagged in sub-array 2. ! ! Correcting IF 6. ! A total of 12 telescope corrections were flagged in sub-array 2. ! ! Correcting IF 7. ! A total of 12 telescope corrections were flagged in sub-array 2. ! ! Correcting IF 8. ! A total of 12 telescope corrections were flagged in sub-array 2. ! ! Fit before self-cal, rms=1.001756Jy sigma=38.361402 ! Fit after self-cal, rms=0.985343Jy sigma=38.923015 ! 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=4.94 mas, bmaj=10.05 mas, bpa=-89.02 degrees ! Estimated noise=1.76251 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 = 0.0116245 Jy ! Component: 100 - total flux cleaned = 0.0116076 Jy ! Total flux subtracted in 100 components = 0.0116076 Jy ! Clean residual min=-0.001523 max=0.001503 Jy/beam ! Clean residual mean=-0.000005 rms=0.000503 Jy/beam ! Combined flux in latest and established models = 0.0116076 Jy ! Performing phase self-cal ! Adding 15 model components to the UV plane model. ! The established model now contains 15 components and 0.0116076 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Correcting IF 5. ! ! Correcting IF 6. ! ! Correcting IF 7. ! ! Correcting IF 8. ! ! Fit before self-cal, rms=0.016947Jy sigma=0.638307 ! Fit after self-cal, rms=0.014047Jy sigma=0.526193 ! Inverting map ! Added new window around map position (44, 2). ! clean: niter=100 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.00113297 Jy ! Component: 100 - total flux cleaned = 0.000913266 Jy ! Total flux subtracted in 100 components = 0.000913266 Jy ! Clean residual min=-0.001273 max=0.001817 Jy/beam ! Clean residual mean=-0.000005 rms=0.000407 Jy/beam ! Combined flux in latest and established models = 0.0125208 Jy ! Performing phase self-cal ! Adding 27 model components to the UV plane model. ! The established model now contains 42 components and 0.0125208 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Correcting IF 5. ! ! Correcting IF 6. ! ! Correcting IF 7. ! ! Correcting IF 8. ! ! Fit before self-cal, rms=0.013355Jy sigma=0.497378 ! Fit after self-cal, rms=0.013278Jy sigma=0.495119 ! 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=5.163 mas, bmaj=9.462 mas, bpa=83.84 degrees ! Estimated noise=1.51788 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 = -0.000271253 Jy ! Component: 100 - total flux cleaned = -0.000396806 Jy ! Component: 150 - total flux cleaned = -0.000178518 Jy ! Component: 200 - total flux cleaned = 2.44356e-05 Jy ! Total flux subtracted in 200 components = 2.44356e-05 Jy ! Clean residual min=-0.000863 max=0.000706 Jy/beam ! Clean residual mean=-0.000001 rms=0.000251 Jy/beam ! Combined flux in latest and established models = 0.0125453 Jy ! Performing phase self-cal ! Adding 45 model components to the UV plane model. ! The established model now contains 79 components and 0.0125453 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Correcting IF 5. ! ! Correcting IF 6. ! ! Correcting IF 7. ! ! Correcting IF 8. ! ! Fit before self-cal, rms=0.013164Jy sigma=0.492028 ! Fit after self-cal, rms=0.013055Jy sigma=0.488846 ! Inverting map ! Added new window around map position (46.8, 51). ! clean: niter=200 gain=0.03 cutoff=0 ! Component: 050 - total flux cleaned = 0.000219056 Jy ! Component: 100 - total flux cleaned = 0.000471147 Jy ! Component: 150 - total flux cleaned = 0.000578576 Jy ! Component: 200 - total flux cleaned = 0.000557255 Jy ! Total flux subtracted in 200 components = 0.000557255 Jy ! Clean residual min=-0.000987 max=0.001028 Jy/beam ! Clean residual mean=-0.000001 rms=0.000218 Jy/beam ! Combined flux in latest and established models = 0.0131025 Jy ! Performing phase self-cal ! Adding 36 model components to the UV plane model. ! The established model now contains 115 components and 0.0131025 Jy ! ! Correcting IF 1. ! ! Correcting IF 2. ! ! Correcting IF 3. ! ! Correcting IF 4. ! ! Correcting IF 5. ! ! Correcting IF 6. ! ! Correcting IF 7. ! ! Correcting IF 8. ! ! Fit before self-cal, rms=0.012919Jy sigma=0.485510 ! Fit after self-cal, rms=0.012872Jy sigma=0.484439 ! Inverting map print "============== Finished natural weighting clean ==============" ! ============== Finished natural weighting clean ============== ! restore ! restore: Substituting estimate of restoring beam from last 'invert'. ! Restoring with beam: 5.163 x 9.462 at 83.84 degrees (North through East) ! Clean map min=-0.0015949 max=0.006391 Jy/beam gscale true ! Performing overall amplitude self-cal ! ! Correcting IF 1. ! A total of 18 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* LA 0.00* NL 0.00* ! ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 2. ! A total of 18 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* LA 0.00* NL 0.00* ! ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 3. ! A total of 18 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* LA 0.00* NL 0.00* ! ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 4. ! A total of 18 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* LA 0.00* NL 0.00* ! ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 5. ! A total of 18 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* LA 0.00* NL 0.00* ! ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 6. ! A total of 18 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* LA 0.00* NL 0.00* ! ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 7. ! A total of 18 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* LA 0.00* NL 0.00* ! ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* OV 0.00* ! ! ! Correcting IF 8. ! A total of 18 telescope corrections were flagged in sub-array 1. ! Telescope amplitude corrections in sub-array 1: ! FD 0.00* LA 0.00* NL 0.00* ! ! Telescope amplitude corrections in sub-array 2: ! BR 0.00* OV 0.00* ! ! ! Fit before self-cal, rms=0.012872Jy sigma=0.484439 ! 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 .//J1238+5249_X_map.fits ! Inverting map and beam ! There are no unflagged visibilities to be inverted. ! Error occured in command: wmap ! wmodel .//J1238+5249_X_map.mod ! Writing 115 model components to file: .//J1238+5249_X_map.mod wobs .//J1238+5249_X_uvs.fits ! Writing UV FITS file: .//J1238+5249_X_uvs.fits wwins .//J1238+5249_X_map.win ! wwins: Wrote 2 windows to .//J1238+5249_X_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 .//J1238+5249_X_dfm.log closed on Sat Oct 20 23:52:37 2018