Vincenzo Carbone wrote:

As a general guide, at what levels of occupancy do heavy atom sites have to have before they become useful or too poor to use.

Cant answer that q- the intensities are usually not on an absolute scale at this point..

You need to check the CCs of the signal.
Are they consistent across different wave lengths; different data partitions etc..?

SHELXC does this for MAD ano signals. George's cut off is CC > 0,.3 means the site will be useful I believe..

Scala does it for anomalous and dispersive diffs as part of the data merging for both MAD ans SAD data.

It would be easy enough I think to extend the SCALA analysis for SIR signals




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