Mosaic of C2RCC output flag issue

Optical Toolbox
#1

Hi all,
I have been using snap gpt to mosaic daily L2 olci data derived by a few atmospheric correction algorithms. I believe I have an issue when mosaicking C2RCC output L2 files.
The issue is I use the following condition in the xml file:

        <conditions>
          <condition>
            <name>valid_PE</name>
            <expression>c2rcc_flags.Valid_PE</expression>
            <output>true</output>
          </condition>
        </conditions>

but the output mosaiced result is not masked out. With other AC’s (e.g., POLYMER) I am able to set to valid pixel value and those are removed. for general reference, I use python to create file lists to mosaic and then use subprocess.run to run the gpt with the xml file.
I couldn’t find an answer digging through the forum so hope someone might have insight.
attached is my xml file.
Thank you!
mosaic_c2rcc_PB.xml (3.1 KB)

#2

Does it work for other c2rcc flags?
Maybe this happens because it is the highest bit of the flags. Maybe this is not properly handled.
You can try a different expression. It tests for the same flag:
bit_set(c2rcc_flags, 31)

EOMasters_icon_60 Marco from EOMasters - Mastering Earth Observation