/usr/lib/x86_64-linux-gnu/libqfits.so is in libqfits-dev 6.2.0-8+b2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libqfits.so.0.0.0
/usr/lib/x86_64-linux-gnu/libqfits.so.0.0.0