VLA mosaic regression

Goal

Compare Steve's regression script on a 9-point Orion mosaic with simdata in order to investigate the problem where simdata mosaics prepared for ALMA proposals had 50x higher noise than single field.

Tools

  • casa regressions location in Socorro: gygax:/home/ballista/casa/active/code/xmlcasa/scripts/regressions
  • run_orionmos4sim.py

Steve's regression

Statistics on single component

Simulation: 9-field, 4-components

 Component C :
--               Dirty image max :     1.074053 was     1.075104 divf    -0.000978 (Passed) Last 
--         Dirty image max pos x :   325.000000 was   325.000000 diff     0.000000 (Passed) Last 
--         Dirty image max pos y :   475.000000 was   475.000000 diff     0.000000 (Passed) Last 
--            Restored image max :     0.973671 was     0.972570 divf     0.001132 (Passed) Last 
--      Restored image max pos x :   325.000000 was   325.000000 diff     0.000000 (Passed) Last 
--      Restored image max pos y :   475.000000 was   475.000000 diff     0.000000 (Passed) Last 
--            Residual image max :     0.002454 was     0.003185 divf    -0.229408 (Failed) Last 
--            Residual image rms :     0.001325 was     0.001645 divf    -0.194335 (Failed) Last 
--              Model image flux :     0.813946 was     0.893403 divf    -0.088937 (Failed) Last 
--        PBCOR Model image flux :     0.982312 was     0.981439 divf     0.000890 (Passed) Last 
--           Simulated comp flux :     1.000000 was     1.000000 divf     0.000000 (Passed) Last 
--          Simulated comp pos x :   325.000000 was   325.000000 diff     0.000000 (Passed) Last 
--          Simulated comp pos y :   475.000000 was   475.000000 diff     0.000000 (Passed) Last 

Simulation: single field (10), single component ('C') at center of this field

 Component C :
--               Dirty image max :     0.973958 was     1.075104 divf    -0.094081 (Failed) Last 
--         Dirty image max pos x :   325.000000 was   325.000000 diff     0.000000 (Passed) Last 
--         Dirty image max pos y :   475.000000 was   475.000000 diff     0.000000 (Passed) Last 
--            Restored image max :     0.966092 was     0.972570 divf    -0.006660 (Passed) Last 
--      Restored image max pos x :   325.000000 was   325.000000 diff     0.000000 (Passed) Last 
--      Restored image max pos y :   475.000000 was   475.000000 diff     0.000000 (Passed) Last 
--            Residual image max :     0.002232 was     0.003185 divf    -0.299081 (Failed) Last 
--            Residual image rms :     0.001161 was     0.001645 divf    -0.294235 (Failed) Last 
--              Model image flux :     0.965186 was     0.893403 divf     0.080349 (Failed) Last 
--        PBCOR Model image flux :     0.965399 was     0.981439 divf    -0.016343 (Passed) Last 
--           Simulated comp flux :     1.000000 was     1.000000 divf     0.000000 (Passed) Last 
--          Simulated comp pos x :   325.000000 was   325.000000 diff     0.000000 (Passed) Last 
--          Simulated comp pos y :   475.000000 was   475.000000 diff     0.000000 (Passed) Last 

Statistics on whole image

9-field, 4-components

 Whole image :
--         Dirty image (all) max :     1.100965 was     1.100673 divf     0.000266 (Passed) Last 
--         Dirty image (all) rms :     0.062183 was     0.045101 divf     0.378765 (Failed) Last 
--         Clean image (all) max :     1.016566 was     1.017260 divf    -0.000683 (Passed) Last 
--         Clean image (all) rms :     0.026181 was     0.026145 divf     0.001372 (Passed) Last 
--     Clean image (off-src) rms :     0.001445 was     0.001416 divf     0.020446 (Failed) Last 
--      Residual image (all) max :     0.011534 was     0.014505 divf    -0.204822 (Failed) Last 
--      Residual image (all) rms :     0.000693 was     0.001232 divf    -0.437904 (Failed) Last 
--  Residual image (off-src) rms :     0.001343 was     0.001364 divf    -0.015193 (Failed) Last 
--        Model image (all) flux :     2.970013 was     3.397364 divf    -0.125789 (Failed) Last 
--  PBCOR Model image (all) flux :     3.974663 was     3.967502 divf     0.001805 (Passed) Last 
--          Sim Model total flux :     4.000000 was     4.000000 divf     0.000000 (Passed) Last 
-- Eff. mosaic area (sq.arcmin.) :    59.969171 was    80.919372 divf    -0.258902 (Failed) Last 

-
--+++ single field (10), single component at center of this field
 Whole image :
--         Dirty image (all) max :     1.680073 was     1.100673 divf     0.526406 (Failed) Last 
--         Dirty image (all) rms :     0.111362 was     0.045101 divf     1.469185 (Failed) Last 
--         Clean image (all) max :     0.966092 was     1.017260 divf    -0.050300 (Failed) Last 
--         Clean image (all) rms :     0.024874 was     0.026145 divf    -0.048600 (Failed) Last 
--     Clean image (off-src) rms :     0.013690 was     0.001416 divf     8.669242 (Failed) Last 
--      Residual image (all) max :     0.013049 was     0.014505 divf    -0.100348 (Failed) Last 
--      Residual image (all) rms :     0.000683 was     0.001232 divf    -0.445317 (Failed) Last 
--  Residual image (off-src) rms :     0.001664 was     0.001364 divf     0.220299 (Failed) Last 
--        Model image (all) flux :     0.965186 was     3.397364 divf    -0.715901 (Failed) Last 
--  PBCOR Model image (all) flux :     0.965399 was     3.967502 divf    -0.756673 (Failed) Last 
--          Sim Model total flux :     1.000000 was     4.000000 divf    -0.750000 (Failed) Last 
-- Eff. mosaic area (sq.arcmin.) :    13.924362 was    80.919372 divf    -0.827923 (Failed) Last 

Simdata simulation created to mimic the VLA X-band mosaic regression dataset

    Scale: -0.05 to 0.5 Jy Scale: -1 to 10 mJy
Method image 0 iter 100 iter 200 iter 300 iter Final
mosaic of all 9-fields clean
psf: residuals:

csclean of field 8 of the mosaic only clean
psf: residuals:

csclean of single field simulation clean
psf: residuals:

-- ToddHunter - 2011-09-12
Topic attachments
I Attachment ActionSorted ascending Size Date Who Comment
csclean.pngpng csclean.png manage 145 K 2011-09-14 - 17:28 ToddHunter  
csclean100.pngpng csclean100.png manage 261 K 2011-09-14 - 17:28 ToddHunter  
csclean100r.pngpng csclean100r.png manage 261 K 2011-09-14 - 17:28 ToddHunter  
csclean200.pngpng csclean200.png manage 189 K 2011-09-14 - 17:29 ToddHunter  
csclean200r.pngpng csclean200r.png manage 189 K 2011-09-14 - 17:29 ToddHunter  
csclean300.pngpng csclean300.png manage 163 K 2011-09-14 - 17:29 ToddHunter  
csclean300r.pngpng csclean300r.png manage 163 K 2011-09-14 - 17:31 ToddHunter  
cscleanFinal.pngpng cscleanFinal.png manage 149 K 2011-09-14 - 17:30 ToddHunter  
cscleanFinalr.pngpng cscleanFinalr.png manage 149 K 2011-09-14 - 17:30 ToddHunter  
csclean_beam.pngpng csclean_beam.png manage 174 K 2011-09-30 - 12:47 ToddHunter  
csclean_scaled.pngpng csclean_scaled.png manage 180 K 2011-09-30 - 10:19 ToddHunter  
mosaic.pngpng mosaic.png manage 77 K 2011-09-14 - 17:24 ToddHunter  
mosaic100.pngpng mosaic100.png manage 132 K 2011-09-14 - 17:25 ToddHunter  
mosaic100r.pngpng mosaic100r.png manage 188 K 2011-09-14 - 17:25 ToddHunter  
mosaic200.pngpng mosaic200.png manage 131 K 2011-09-14 - 17:26 ToddHunter  
mosaic200r.pngpng mosaic200r.png manage 184 K 2011-09-14 - 17:30 ToddHunter  
mosaic300.pngpng mosaic300.png manage 131 K 2011-09-14 - 17:27 ToddHunter  
mosaic300r.pngpng mosaic300r.png manage 131 K 2011-09-14 - 17:27 ToddHunter  
mosaicFinal.pngpng mosaicFinal.png manage 131 K 2011-09-14 - 17:27 ToddHunter  
mosaicFinalr.pngpng mosaicFinalr.png manage 131 K 2011-09-14 - 17:27 ToddHunter  
mosaic_beam.pngpng mosaic_beam.png manage 75 K 2011-09-30 - 12:43 ToddHunter  
mosaic_scaled.pngpng mosaic_scaled.png manage 70 K 2011-09-30 - 10:18 ToddHunter  
single.pngpng single.png manage 107 K 2011-09-14 - 17:21 ToddHunter  
single100.pngpng single100.png manage 46 K 2011-09-14 - 17:21 ToddHunter  
single100r.pngpng single100r.png manage 46 K 2011-09-14 - 17:21 ToddHunter  
single200.pngpng single200.png manage 27 K 2011-09-14 - 17:21 ToddHunter  
single200r.pngpng single200r.png manage 27 K 2011-09-14 - 17:22 ToddHunter  
single300.pngpng single300.png manage 22 K 2011-09-14 - 17:22 ToddHunter  
single300r.pngpng single300r.png manage 22 K 2011-09-14 - 17:22 ToddHunter  
singleFinal.pngpng singleFinal.png manage 19 K 2011-09-14 - 17:21 ToddHunter  
single_beam.pngpng single_beam.png manage 216 K 2011-09-30 - 12:48 ToddHunter  
single_scaled.pngpng single_scaled.png manage 216 K 2011-09-30 - 10:18 ToddHunter  
uv.pngpng uv.png manage 29 K 2011-09-30 - 10:41 ToddHunter uv coverage for 1 of the fields (field 2)
Topic revision: r8 - 2011-09-30, ToddHunter
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