Gpt outputs geotiff with corrupted bands after BandSelect

To summarize the solutions:

Multiple bands in outputs when using BandSelect
This is the expected behaviour of BandSelect. It outputs masks and flags as extra bands.
Use Subset instead.
Example:

  <node id="Subset_OZA">
    <operator>Subset</operator>
    <sources><source>Reproject_OLCI</source></sources>
    <parameters>
	<sourceBands>OZA</sourceBands>
	<copyMetadata>false</copyMetadata>
    </parameters>
  </node>

NaN in outputs after subset
Using pixel geocoding replaces some pixels by NaNs. This appears only when using the option:
" -Ds3tbx.reader.olci.pixelGeoCoding=true" in gpt

Error when reprojecting in EPSG 3413 in SNAP’s graphbuilder

Under investigation.

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