! Started logfile: 1628+216_S.log on Fri Feb 16 15:07:01 2001
observe 1628+216_S.edt
! Reading UV FITS file: 1628+216_S.edt
! AN table 1: 52 integrations on 15 of 15 possible baselines.
! Apparent sampling: 0.95641 visibilities/baseline/integration-bin.
! Found source: 1628+216
! 
! 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  2.22497e+09        8e+06          1        8e+06
!  02        2  2.24497e+09        8e+06          1        8e+06
!  03        3  2.33497e+09        8e+06          1        8e+06
!  04        4  2.36497e+09        8e+06          1        8e+06
! 
! Polarization(s): RR
! 
! Read 5568 lines of history.
! 
! Reading 2984 visibilities.
print "***********************************"
! *********************************** 
print "*** Using gonzo instruction set ***"
! *** Using gonzo instruction set *** 
print "***********************************"
! *********************************** 
float field_size
field_size = 1024
float field_cell
field_cell = 2.0
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 2.00x2.00 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 12 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 12 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 12 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 12 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=0.850446Jy  sigma=6.024120
! Fit after  self-cal, rms=0.850419Jy  sigma=6.023977
! 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=8.337 mas, bmaj=37.83 mas, bpa=35.09 degrees
! Estimated noise=3.29062 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 = 0.114306 Jy
! Total flux subtracted in 50 components = 0.114306 Jy
! Clean residual min=-0.017411 max=0.031896 Jy/beam
! Clean residual mean=-0.000004 rms=0.005358 Jy/beam
! Combined flux in latest and established models = 0.114306 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 0.114306 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.105672Jy  sigma=0.745535
! Fit after  self-cal, rms=0.105672Jy  sigma=0.745534
! 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=9.92 mas, bmaj=38.46 mas, bpa=35.8 degrees
! Estimated noise=1.84749 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 = 0.0346546 Jy
! Component: 100  -  total flux cleaned = 0.0519546 Jy
! Total flux subtracted in 100 components = 0.0519546 Jy
! Clean residual min=-0.010358 max=0.015312 Jy/beam
! Clean residual mean=0.000001 rms=0.003661 Jy/beam
! Combined flux in latest and established models = 0.166261 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 17 model components to the UV plane model.
! The established model now contains 17 components and 0.166261 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.095075Jy  sigma=0.668257
! Fit after  self-cal, rms=0.095056Jy  sigma=0.668097
! Inverting map 
print "****************************************"
! **************************************** 
print "*** Finished Natural Weighting CLEAN ***"
! *** Finished Natural Weighting CLEAN *** 
print "****************************************"
! **************************************** 
gscale true
! Performing overall amplitude self-cal
! 
! Correcting IF 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.10     FD        1.04     KP        0.94     LA        0.76     
!   OV        1.15     PT        0.89     
! 
! 
! Correcting IF 2.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.09     FD        0.99     KP        0.97     LA        0.94     
!   OV        1.01     PT        0.90     
! 
! 
! Correcting IF 3.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.01     FD        1.00     KP        0.96     LA        0.88     
!   OV        1.05     PT        0.93     
! 
! 
! Correcting IF 4.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.05     FD        1.09     KP        0.98     LA        0.94     
!   OV        1.14     PT        0.82     
! 
! 
! Fit before self-cal, rms=0.095056Jy  sigma=0.668097
! Fit after  self-cal, rms=0.088371Jy  sigma=0.649424
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=10.24 mas, bmaj=38.59 mas, bpa=35.82 degrees
! Estimated noise=1.75834 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 = 0.00319066 Jy
! Component: 100  -  total flux cleaned = 0.00291345 Jy
! Total flux subtracted in 100 components = 0.00291345 Jy
! Clean residual min=-0.005589 max=0.007840 Jy/beam
! Clean residual mean=-0.000000 rms=0.001639 Jy/beam
! Combined flux in latest and established models = 0.169174 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 27 components and 0.169174 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.088002Jy  sigma=0.646909
! Fit after  self-cal, rms=0.088053Jy  sigma=0.646700
! 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 = -0.000217213 Jy
! Component: 100  -  total flux cleaned = -0.000538731 Jy
! Total flux subtracted in 100 components = -0.000538731 Jy
! Clean residual min=-0.005415 max=0.007174 Jy/beam
! Clean residual mean=-0.000000 rms=0.001553 Jy/beam
! Combined flux in latest and established models = 0.168635 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 15 model components to the UV plane model.
! The established model now contains 34 components and 0.168635 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.087915Jy  sigma=0.645756
! Fit after  self-cal, rms=0.089658Jy  sigma=0.632615
! Inverting map and beam 
! Estimated beam: bmin=10.25 mas, bmaj=38.52 mas, bpa=35.82 degrees
! Estimated noise=1.77792 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 = -0.000710553 Jy
! Component: 100  -  total flux cleaned = -0.00100735 Jy
! Total flux subtracted in 100 components = -0.00100735 Jy
! Clean residual min=-0.005414 max=0.006216 Jy/beam
! Clean residual mean=0.000001 rms=0.001472 Jy/beam
! Combined flux in latest and established models = 0.167628 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 14 model components to the UV plane model.
! The established model now contains 40 components and 0.167628 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.089539Jy  sigma=0.631866
! Fit after  self-cal, rms=0.089553Jy  sigma=0.631757
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1628+216_S
! Writing UV FITS file: 1628+216_S.uvf
! Writing 40 model components to file: 1628+216_S.mod
! wwins: Wrote 1 windows to 1628+216_S.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 10.25 x 38.52 at 35.82 degrees (North through East)
! Clean map  min=-0.0056342  max=0.14658 Jy/beam
! Writing clean map to FITS file: 1628+216_S.fits
! Writing difmap environment to: 1628+216_S.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
device 1628+216_Suv.ps/vps,1,2
! Attempting to open device: '1628+216_Suv.ps/vps'
radplot
! Using default options string "m1"
uvplot
device 1628+216_Sim.ps/vps
! Attempting to open device: '1628+216_Sim.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=10.25 mas, bmaj=38.52 mas, bpa=35.82 degrees
! Estimated noise=1.77792 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 10.25 x 38.52 at 35.82 degrees (North through East)
! Clean map  min=-0.0056342  max=0.14658 Jy/beam
quit
! Quitting program
! Log file 1628+216_S.log closed on Fri Feb 16 15:07:16 2001