Changes

The black histograms in the plots are the data and the red curves are the best fit to the data using the multi-Poisson model described in a preceeding section, with two modifications.

The black histograms in the plots are the data and the red curves are the best fit to the data using the multi-Poisson model described in a preceeding section, with two modifications.

* The Gaussian smearing of the individual pixel pulse-height distribution was replaced with the following function that has an asymmetric tail.

* The Gaussian smearing of the individual pixel pulse-height distribution was replaced with the following function that has an asymmetric tail.

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|<math> f(x;\alpha,\beta,\sigma) </math> ||=|| <math>\beta\frac{\alpha}{2}\,e^{\alpha x+\frac{\alpha^2\sigma^2}{2}}[1-Erf(\frac{x+\alpha\sigma^2}{\sqrt{2}\sigma})] </math>

|<math> f(x;\alpha,\beta,\sigma) </math> ||=|| <math>\beta\frac{\alpha}{2}\,e^{\alpha x+\frac{\alpha^2\sigma^2}{2}}[1-Erf(\frac{x+\alpha\sigma^2}{\sqrt{2}\sigma})] </math>

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