Applied Biosystems SOLiD™ 4 System SETS Software User Guide ...

Applied Biosystems SOLiD 4 System SETS Software User Guide
Appendix D Advanced Topic: Primary Analysis
Image metrics D
Figure 11 gives two examples of the exposure metric:
Figure 11 Two examples of the exposure metric
The exposure value calculated is a measure of how close the system
is to capturing an image that maximizes the use of the dynamic
range. Looking at the tail behavior of the pixel distribution makes the
determination.
If the tail does not extend to the saturation point, the image is
underexposed.
If the tail has a peak at the far right side that is a measurement of
the saturation, the image is overexposed.
The exposure population reports the population of panels that have
an exposure quality beyond a given threshold. A large average size
can be caused by a small number of panels with large outlier values
or a large number of panels with a large size. The two values taken
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