/usr/share/applications/sift.desktop is in python-guiqwt 2.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | [Desktop Entry]
Version=1.0
Type=Application
Name=Sift
GenericName=Sift
Comment=Signal and Image Filtering Tool (demo software based on guidata and guiqwt)
TryExec=sift
Exec=sift
MimeType=application/x-foo;
Categories=Development;Science;Physics;
|