Variance Map Floor Tests

6 July 2001

Plots (columns in table):

  1. Reduced Chisquare VS Profile Fit Magnitude
  2. PSF Sigma VS Profile Fit Magnitude
  3. Reduced Chisquare VS S/N
  4. Chisquare Histogram. (Normalized.)
  5. (PSF Mag - Standard Aperture Mag) Vs Y (Scan Angle). PSF ID segment boundaries marked.
  6. Reduced Chisquare Vs Y (Scan Angle). PSF ID segment boundaries marked.
  7. Profile Fit Magnitude Vs Standard Aperture Mag
  8. Background Vs Y (Scan Angle)
  9. Histogram of Profile Fit Magnitude
  10. (PSF Mag - Standard Aperture Mag) Vs PSF Mag
  11. Sigma PSF Mag Vs Y (Scan Angle). PSF ID segment boundaries marked.
  12. Sigma PSF Mag Vs Sigma Std Aperture
  13. S/N Vs PSF Mag. Blends are overplotted "+".
  14. S/N Vs PSF Mag, for non-blends, passive deblends, active deblends, and mixed, separately in four panels.

NB sometimes the .gifs may come out white-on-white, and appear blank. Changing the image from 8-bit to 24-bit mode with xv should fix it.

Runs of 980811s, with four different VM floors:

  1. Run 1
    Floors:
    1. J: 7.5e-7
    2. H: 1.5e-6
    3. K: 6.0e-7

    Scan 1 2 3 4 5 6 7 8 9 10 11 12 13 14
    065 J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K

  2. Run 2
    Floors:
    1. J: 2.5e-6
    2. H: 5.0e-6
    3. K: 2.0e-6

    Scan 1 2 3 4 5 6 7 8 9 10 11 12 13 14
    065 J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K

  3. Run 3
    Floors:
    1. J: 7.5e-6
    2. H: 1.5e-5
    3. K: 6.0e-6

    Scan 1 2 3 4 5 6 7 8 9 10 11 12 13 14
    065 J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K

  4. Run 4
    Floors:
    1. J: 2.5e-5
    2. H: 5.0e-5
    3. K: 2.0e-5

    Scan 1 2 3 4 5 6 7 8 9 10 11 12 13 14
    065 J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K J, H, K

6 July 2001, WAW.