[Nexus] pixel_mask documentation

Tobias.Richter at diamond.ac.uk Tobias.Richter at diamond.ac.uk
Tue Jul 9 14:28:10 BST 2013

Hi all,

NXdetector has a pixel_mask field that says:

  <field name="pixel_mask" type="NX_FLOAT" >
    <doc>The pixel mask for the detector. Contains information about dead, blind or high pixels.</doc>
    <dimensions rank="2">
       <dim index="1" value="i"/>
       <dim index="2" value="j"/>

First I am surprised it is a NX_FLOAT. And second there is no indication what values are used for what type of pixel.

I'd assume anything non-zero means 'do not use pixel'. 

Just to have a start I'd suggest changing this to INT and useing:

0: pixel okay
1: dead 
2: blind (non-existent virtual pixel)
3: high 

If I don't hear otherwise I'd update the definition with that clarification in two weeks.

Kind regards,

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