Instrument Model Bugs: fpsf1d, fpsf2d

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11 Nov 2008

These are the webpages relative to Sherpa in the CIAO 3.4 release (18 December 2006). They are no longer actively updated, however the CXC will continue limited support of CIAO 3.4 for the near future.

15 Dec 2008

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Bugs

The function for extracting the sub-array in these models is not working as intended.

The desired region of the PSF is not getting selected correctly. Using the full array leads to better results in the cases examined so far.

Workarounds:

for fpsf1d set xsize to be equal to the number of bins or data points. In fpsf2d, make xsize the length of the x-axis, and ysize the length of the y-axis. In all cases, leave xoffset and yoffset at zero.
If the first workaround does not solve the problem, manually crop the PSF such that "lplot psf" and "image psf" look like you'd expect.