Is it possible to read whole band data as an array (as a raw data) from Python?

You can exchange ‘FLH_Product’, ‘FLH_Type’, ‘FLH’ with whatever you want. These are just names. Best would be if the names describe your data.

The absolute path can be provided as usual.
targetProduct.writeHeader(‘c:/temp/data/output/image.tif’)
or as it is done here: