Yes, you can surely track the downloaded files by looking at the CSV file that is provided when you download the files with or without ZIP.

The CSV file has the details of the files downloaded. The file's id, parentId (if any), parent name (if any), and file path (only if you selected Download ZIP of Files in SubFolders).

With this feature, you can cross-verify the downloads that took place to have the same number of files as returned in the CSV files.