! Started logfile: 0537-441_X.log on Mon Jul 18 13:18:06 2005
observe 0537-441_X.edt
! Reading UV FITS file: 0537-441_X.edt
! AN table 1: 79 integrations on 171 of 171 possible baselines.
! Apparent sampling: 0.0752091 visibilities/baseline/integration-bin.
! *** This seems a bit low - see "help observe" on the binwid argument.
! Found source: 0537-441
! 
! 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  8.40997e+09        8e+06          1        8e+06
!  02        2  8.47997e+09        8e+06          1        8e+06
!  03        3  8.79497e+09        8e+06          1        8e+06
!  04        4  8.89997e+09        8e+06          1        8e+06
! 
! Polarization(s): RR
! 
! Read 1818 lines of history.
! 
! Reading 4064 visibilities.
![@gonzo8-0.1 0537-441_X]
print "***********************************"
! *********************************** 
print "*** Using gonzo instruction set ***"
! *** Using gonzo instruction set *** 
print "***********************************"
! *********************************** 
float field_size
field_size = 1024
float field_cell
field_cell = 0.1
integer clean_niter
clean_niter = 50
float clean_gain
clean_gain = 0.03
float dynam
dynam = 8.0
float win_mult
win_mult = 1.8
float solint
solint = 3.6/6.0
logical doflt
doflt = true
logical doamp
float new_peak
float flux_cutoff
mapsize field_size,field_cell
! Map grid = 1024x1024 pixels with 0.100x0.100 milli-arcsec cellsize.
select
! 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
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 1205 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 1205 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 1205 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 1205 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=2.965857Jy  sigma=0.041420
! Fit after  self-cal, rms=2.961628Jy  sigma=0.041283
! clrmod: Cleared the established, tentative and continuum models.
! Redundant starting model cleared.
uvweight 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.
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=0.5929 mas, bmaj=1.857 mas, bpa=-6.016 degrees
! Estimated noise=2088.44 mJy/beam.
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! Added new window around map position (0, 0).
! clean: niter=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 2.87733 Jy
! Total flux subtracted in 50 components = 2.87733 Jy
! Clean residual min=-0.314307 max=0.802464 Jy/beam
! Clean residual mean=0.000658 rms=0.073208 Jy/beam
! Combined flux in latest and established models = 2.87733 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 1 model components to the UV plane model.
! The established model now contains 1 components and 2.87733 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=1.163321Jy  sigma=0.016539
! Fit after  self-cal, rms=1.163320Jy  sigma=0.016539
! Inverting map 
! clean: niter=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.663595 Jy
! Total flux subtracted in 50 components = 0.663595 Jy
! Clean residual min=-0.127493 max=0.248946 Jy/beam
! Clean residual mean=0.000418 rms=0.034302 Jy/beam
! Combined flux in latest and established models = 3.54093 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 6 model components to the UV plane model.
! The established model now contains 6 components and 3.54093 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.635852Jy  sigma=0.009075
! Fit after  self-cal, rms=0.635842Jy  sigma=0.009074
! Inverting map 
print "****************************************"
! **************************************** 
print "*** Finished Uniform Weighting CLEAN ***"
! *** Finished Uniform Weighting CLEAN *** 
print "****************************************"
! **************************************** 
uvweight 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
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=0.7616 mas, bmaj=2.414 mas, bpa=-5.764 degrees
! Estimated noise=1093.83 mJy/beam.
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.436344 Jy
! Component: 100  -  total flux cleaned = 0.624333 Jy
! Total flux subtracted in 100 components = 0.624333 Jy
! Clean residual min=-0.087758 max=0.104814 Jy/beam
! Clean residual mean=0.000034 rms=0.032943 Jy/beam
! Combined flux in latest and established models = 4.16526 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 27 model components to the UV plane model.
! The established model now contains 29 components and 4.16526 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.324069Jy  sigma=0.004410
! Fit after  self-cal, rms=0.323945Jy  sigma=0.004407
! Inverting map 
print "****************************************"
! **************************************** 
print "*** Finished Natural Weighting CLEAN ***"
! *** Finished Natural Weighting CLEAN *** 
print "****************************************"
! **************************************** 
gscale true
! Performing overall amplitude self-cal
! 
! Correcting IF 1.
!  A total of 12 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00*    FD        0.95     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        0.96     LA        0.97     
!   MC        1.00*    MK        1.01     NL        1.00*    NY        1.00*    
!   ON        1.00*    OV        1.08     PT        0.99     SC        0.99     
!   TS        1.00*    WF        1.00*    WZ        1.00*    
! 
! 
! Correcting IF 2.
!  A total of 12 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00*    FD        0.94     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        0.96     LA        0.98     
!   MC        1.00*    MK        1.03     NL        1.00*    NY        1.00*    
!   ON        1.00*    OV        1.10     PT        0.99     SC        1.03     
!   TS        1.00*    WF        1.00*    WZ        1.00*    
! 
! 
! Correcting IF 3.
!  A total of 12 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00*    FD        0.95     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        0.96     LA        0.97     
!   MC        1.00*    MK        1.01     NL        1.00*    NY        1.00*    
!   ON        1.00*    OV        1.10     PT        1.00     SC        1.02     
!   TS        1.00*    WF        1.00*    WZ        1.00*    
! 
! 
! Correcting IF 4.
!  A total of 12 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00*    FD        0.95     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        0.96     LA        0.97     
!   MC        1.00*    MK        1.01     NL        1.00*    NY        1.00*    
!   ON        1.00*    OV        1.09     PT        0.99     SC        1.06     
!   TS        1.00*    WF        1.00*    WZ        1.00*    
! 
! 
! Fit before self-cal, rms=0.323945Jy  sigma=0.004407
! Fit after  self-cal, rms=0.227276Jy  sigma=0.002870
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=0.7748 mas, bmaj=2.448 mas, bpa=-5.213 degrees
! Estimated noise=1088.19 mJy/beam.
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = -0.0145384 Jy
! Component: 100  -  total flux cleaned = -0.015812 Jy
! Total flux subtracted in 100 components = -0.015812 Jy
! Clean residual min=-0.040012 max=0.062838 Jy/beam
! Clean residual mean=0.000808 rms=0.013550 Jy/beam
! Combined flux in latest and established models = 4.14945 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 10 model components to the UV plane model.
! The established model now contains 39 components and 4.14945 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.225215Jy  sigma=0.002862
! Fit after  self-cal, rms=0.225209Jy  sigma=0.002861
! Inverting map 
dynam = dynam - 1.0
doamp = true
solint = solint * (6.0/3.6)
flux_cutoff = imstat(rms) * dynam
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 2.60109e-05 Jy
! Component: 100  -  total flux cleaned = -0.000660376 Jy
! Total flux subtracted in 100 components = -0.000660376 Jy
! Clean residual min=-0.038562 max=0.061694 Jy/beam
! Clean residual mean=0.000804 rms=0.013466 Jy/beam
! Combined flux in latest and established models = 4.14878 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 7 model components to the UV plane model.
! The established model now contains 42 components and 4.14878 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.224576Jy  sigma=0.002855
! Fit after  self-cal, rms=0.136966Jy  sigma=0.001691
! Inverting map and beam 
! Estimated beam: bmin=0.775 mas, bmaj=2.443 mas, bpa=-5.175 degrees
! Estimated noise=1089.22 mJy/beam.
doamp = false
solint = solint / (6.0/3.6)
flux_cutoff = imstat(rms) * dynam
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! Added new window around map position (1.5, 10.3).
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.032624 Jy
! Component: 100  -  total flux cleaned = 0.0360663 Jy
! Total flux subtracted in 100 components = 0.0360663 Jy
! Clean residual min=-0.017752 max=0.021779 Jy/beam
! Clean residual mean=-0.000312 rms=0.004017 Jy/beam
! Combined flux in latest and established models = 4.18485 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 12 model components to the UV plane model.
! The established model now contains 53 components and 4.18485 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.129754Jy  sigma=0.001588
! Fit after  self-cal, rms=0.128685Jy  sigma=0.001573
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 0537-441_X
! Writing UV FITS file: 0537-441_X.uvf
! Writing 53 model components to file: 0537-441_X.mod
! wwins: Wrote 2 windows to 0537-441_X.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 0.775 x 2.443 at -5.175 degrees (North through East)
! Clean map  min=-0.019557  max=3.7838 Jy/beam
! Writing clean map to FITS file: 0537-441_X.fits
! Writing difmap environment to: 0537-441_X.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
![@gonzo_plot 0537-441_X]
device 0537-441_Xuv.ps/vps,1,2
! Attempting to open device: '0537-441_Xuv.ps/vps'
radplot
! Using default options string "m1"
uvplot
! Using default options string ""
device 0537-441_Xim.ps/vps
! Attempting to open device: '0537-441_Xim.ps/vps'
uvweight 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.
loglevs -1,2048,2
! The new contour levels are:
!  -1 1 2 4 8 16 32 64 128 256 512 1024 2048
cmul = imstat(rms)*3
! Inverting map and beam 
! Estimated beam: bmin=0.775 mas, bmaj=2.443 mas, bpa=-5.175 degrees
! Estimated noise=1089.22 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 0.775 x 2.443 at -5.175 degrees (North through East)
! Clean map  min=-0.019557  max=3.7838 Jy/beam
![Exited script file: gonzo_plot]
![Exited script file: gonzo8-0.1]
quit
! Quitting program
! Log file 0537-441_X.log closed on Mon Jul 18 13:18:41 2005