Problem after replacing tiff file

Hi, I modified HV tiff file in measurement folder with python.(Sentinel-1)(Denoised Thermal noise)

Then I put modified HV file in measurement folder and delete original file.

(Replaced in same filename)

When I opened modified HV file, SNAP shows HV file correctly.

However when I open, Amplitude_HV and Intensity_HV don’t show modified HV file.

Please help!

Probably the tiff files you write are not compatible with the Sentinel-1 format.
Maybe they don’t have the correct data type. You might see more information in the log file (Menu: Help / Open Log Directory).
However, I would suggest to write separate data and not exchanging data in the Sentinel-1 product.