-- AnishaVadher - 08 Dec 2016

  • Updated code: Analysis1.py.txt
  • Created a mode filter and improved sigma filter (uses truncation method)
  • Used to analyse M103 simulation with 2 different backgrounds:
    • Flat: mean=1000, sigma=10
    • Plane: mean=1000+0.1x, sigma=5+0.0025y
  • Compared output of median, mode and sigma filters to input mean and sigma in simulation
  • Attempted to compute Chi^2 to measure similarity of analysis output with simulation input - need to fix.
  • Reference image of M103 simulation with no background:
  • M103_Simtest_noBG.png
  • Flat background analysis:
  • M103_Simtest_starsBG_flat_plots.png
  • Plane background analysis:
  • M103_Simtest_starsBG_plane_plots.png

Image Fitted Mean Fitted Std Mode Sim Input (Mean, Std) Stars Counted n Stars input
M103 Flat BG 999.989 9.999 999.5 1000,10 108 6.25 108
M103 Flat with stars 1000.166 10.099 999.5        
Dragonfy Flat BG 1000.006 10.005 999.5 1000,10 176 14.48 176
Dragonfly Flat with stars 1000.214 10.098 999.5        

  • n is the number multiplied by sigma to get the correct number of stars for the threshold of the star counter (thresh = mode + sigma * n)

  • M103 and Dragonfly histograms for flat background:
    Picture1.png

  • M103_plane_Hists.png

  • DragonFly_StarCount_Actual.png
Topic attachments
I Attachment Action Size Date Who Comment
Texttxt Analysis1.py.txt manage 14.3 K 09 Dec 2016 - 12:11 AaronAndrews Analysis code
PNGpng DragonFly_StarCount_Actual.png manage 658.6 K 09 Dec 2016 - 13:03 LauraBevilacqua Comparison between stars found and simulated stars
PNGpng M103_Simtest_noBG.png manage 73.7 K 09 Dec 2016 - 12:26 AaronAndrews M103 reference image (no background)
PNGpng M103_Simtest_starsBG_flat_plots.png manage 658.3 K 09 Dec 2016 - 12:14 AaronAndrews M103 flat background analysis plots
PNGpng M103_Simtest_starsBG_plane_plots.png manage 567.6 K 09 Dec 2016 - 12:14 AaronAndrews M103 plane background analysis plots
Compressed Zip archivezip M103_StarsBG_plane_flat.zip manage 33146.2 K 09 Dec 2016 - 12:13 AaronAndrews M103 fits files (simulations+filters+text files)
PNGpng M103_plane_Hists.png manage 263.8 K 09 Dec 2016 - 13:53 LauraBevilacqua Histograms of full and reduced M103 simulation with planar background
PNGpng Picture1.png manage 331.2 K 09 Dec 2016 - 12:41 AnishaVadher M103 and Dragonfly histograms for flat background

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Topic revision: r6 - 09 Dec 2016 - AnishaVadher

 
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