Data Processing I03 Eiger Data from Mid 2021 

Recently we have had issues with the Eiger 16M detector on I03 which manifests as a high number of noisy pixels on two of the detector modules.  Between April 13th 2021 and May 21st 2021 (run 2 2021) these modules were masked in software for our processing pipelines. From the 16th June (run 3 2021) we have been masking them in hardware so they “appear blank” until a permanent repair can be made. 

All autoprocessing at Diamond has had appropriate masks applied however if you have data from between April 13th 2021 and May 21st 2021 and you wish to process manually you should do the following.

XDS

Add:

UNTRUSTED_RECTANGLE= 2080 3109 2750 3263

UNTRUSTED_RECTANGLE= 3120 4149 2750 3263

to XDS.INP.

A recent version of DIALS will include xia2 which works correctly for XDS and DIALS.

autoPROC

Add:

autoPROC_XdsKeyword_UNTRUSTED_RECTANGLE="2080 3109 2750 3263 | 3120 4149 2750 3263”

to the command inputs.

Once the detector is repaired the masks will be returned to their previous state so this should only be needed temporarily. We are working hard with Dectris to resolve this matter but interventions have been made more difficult working with the constraints in place due to the COVID-19 pandemic. Normal service will resume as soon as possible.