! Started logfile: 1451-400_X.log on Wed Aug 13 10:47:55 2008
observe 1451-400_X.edt
! Reading UV FITS file: 1451-400_X.edt
! AN table 1: 6 integrations on 171 of 171 possible baselines.
! Apparent sampling: 0.130604 visibilities/baseline/integration-bin.
! *** This seems a bit low - see "help observe" on the binwid argument.
! Found source: 1451-400
! 
! 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 1526 lines of history.
! 
! Reading 536 visibilities.
![@gonzo7-0.1-pw 1451-400_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 = 7.0
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 79 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 79 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 79 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 79 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=0.640764Jy  sigma=10.436457
! Fit after  self-cal, rms=0.640771Jy  sigma=10.436443
! 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
peakw win_mult
! Inverting map and beam 
! Estimated beam: bmin=0.6554 mas, bmaj=1.891 mas, bpa=-4.567 degrees
! Estimated noise=2.86812 mJy/beam.
! Added new window around map position (0, 0).
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=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.294738 Jy
! Total flux subtracted in 50 components = 0.294738 Jy
! Clean residual min=-0.035238 max=0.095546 Jy/beam
! Clean residual mean=-0.000054 rms=0.015703 Jy/beam
! Combined flux in latest and established models = 0.294738 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 5 model components to the UV plane model.
! The established model now contains 5 components and 0.294738 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.168625Jy  sigma=2.986399
! Fit after  self-cal, rms=0.168702Jy  sigma=2.983297
! 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=0.7933 mas, bmaj=2.135 mas, bpa=-6.355 degrees
! Estimated noise=2.35317 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 = 0.10403 Jy
! Component: 100  -  total flux cleaned = 0.146913 Jy
! Total flux subtracted in 100 components = 0.146913 Jy
! Clean residual min=-0.022632 max=0.024750 Jy/beam
! Clean residual mean=-0.000182 rms=0.007979 Jy/beam
! Combined flux in latest and established models = 0.441652 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 22 model components to the UV plane model.
! The established model now contains 23 components and 0.441652 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.111604Jy  sigma=1.676919
! Fit after  self-cal, rms=0.111723Jy  sigma=1.670674
! 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 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00*    FD        0.92     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        1.08     LA        0.94     
!   MA        1.00*    MK        0.93     NL        1.12     NY        1.00*    
!   OV        0.96     PT        0.85     SC        0.98     TS        1.00*    
!   WF        1.00*    WZ        1.00*    GG        1.00*    
! 
! 
! Correcting IF 2.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00*    FD        0.82     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        1.07     LA        0.98     
!   MA        1.00*    MK        0.89     NL        1.22     NY        1.00*    
!   OV        0.98     PT        0.92     SC        1.03     TS        1.00*    
!   WF        1.00*    WZ        1.00*    GG        1.00*    
! 
! 
! Correcting IF 3.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00*    FD        0.86     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        1.01     LA        0.92     
!   MA        1.00*    MK        1.18     NL        1.23     NY        1.00*    
!   OV        0.99     PT        0.95     SC        1.01     TS        1.00*    
!   WF        1.00*    WZ        1.00*    GG        1.00*    
! 
! 
! Correcting IF 4.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00*    FD        0.92     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        1.10     LA        0.86     
!   MA        1.00*    MK        0.99     NL        1.05     NY        1.00*    
!   OV        1.04     PT        0.89     SC        1.04     TS        1.00*    
!   WF        1.00*    WZ        1.00*    GG        1.00*    
! 
! 
! Fit before self-cal, rms=0.111723Jy  sigma=1.670674
! Fit after  self-cal, rms=0.106703Jy  sigma=1.351268
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=0.8047 mas, bmaj=2.165 mas, bpa=-7.4 degrees
! Estimated noise=2.24751 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 = 0.00224238 Jy
! Component: 100  -  total flux cleaned = 0.00188545 Jy
! Total flux subtracted in 100 components = 0.00188545 Jy
! Clean residual min=-0.013285 max=0.017524 Jy/beam
! Clean residual mean=-0.000083 rms=0.004226 Jy/beam
! Combined flux in latest and established models = 0.443537 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 9 model components to the UV plane model.
! The established model now contains 31 components and 0.443537 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.105799Jy  sigma=1.351745
! Fit after  self-cal, rms=0.106180Jy  sigma=1.349256
! 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 = -0.000339983 Jy
! Component: 100  -  total flux cleaned = -0.000873323 Jy
! Total flux subtracted in 100 components = -0.000873323 Jy
! Clean residual min=-0.013205 max=0.017329 Jy/beam
! Clean residual mean=-0.000086 rms=0.004200 Jy/beam
! Combined flux in latest and established models = 0.442664 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 6 model components to the UV plane model.
! The established model now contains 34 components and 0.442664 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.105728Jy  sigma=1.351418
! Fit after  self-cal, rms=0.105321Jy  sigma=1.327779
! Inverting map and beam 
! Estimated beam: bmin=0.7945 mas, bmaj=2.144 mas, bpa=-7.688 degrees
! Estimated noise=2.22111 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)
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.000885559 Jy
! Component: 100  -  total flux cleaned = 0.00146845 Jy
! Total flux subtracted in 100 components = 0.00146845 Jy
! Clean residual min=-0.011998 max=0.017065 Jy/beam
! Clean residual mean=-0.000149 rms=0.004107 Jy/beam
! Combined flux in latest and established models = 0.444132 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 9 model components to the UV plane model.
! The established model now contains 38 components and 0.444132 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.104764Jy  sigma=1.329023
! Fit after  self-cal, rms=0.105091Jy  sigma=1.327385
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1451-400_X
! Writing UV FITS file: 1451-400_X.uvf
! Writing 38 model components to file: 1451-400_X.mod
! wwins: Wrote 1 windows to 1451-400_X.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 0.7945 x 2.144 at -7.688 degrees (North through East)
! Clean map  min=-0.012054  max=0.33837 Jy/beam
! Writing clean map to FITS file: 1451-400_X.fits
! Writing difmap environment to: 1451-400_X.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
![@gonzo_plot 1451-400_X]
device 1451-400_Xuv.ps/vps,1,2
! Attempting to open device: '1451-400_Xuv.ps/vps'
radplot
! Using default options string "m1"
uvplot
! Using default options string ""
device 1451-400_Xim.ps/vps
! Attempting to open device: '1451-400_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=0.7945 mas, bmaj=2.144 mas, bpa=-7.688 degrees
! Estimated noise=2.22111 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 0.7945 x 2.144 at -7.688 degrees (North through East)
! Clean map  min=-0.012054  max=0.33837 Jy/beam
![Exited script file: gonzo_plot]
![Exited script file: gonzo7-0.1-pw]
quit
! Quitting program
! Log file 1451-400_X.log closed on Wed Aug 13 10:48:01 2008