I am fetching data from a catalog and it\'s giving data in bytes format.
Bytes data:
b\'\\x80\\x00\\x00\\x00\\n\\x00\\x00%\\x83\\xa0\\x08\\x01\\x00\\
You can try ignoring the non-readable blocks.
blobs.decode('utf-8', 'ignore')
It's not a great solution but the way you're generating the byte object has some issues. Maybe, utf-8 is not the proper encoding for your data.
utf-8