You can now view summary details of the contents of a created dataset from the user interface.
From the dataset or dashboard, click the dataset name to view the details page. In the center of the details page, you will see the folder structure of the files in the dataset with the first level expanded. Each folder lists the total number of items (files and directories) in each folder as well as the folders total size (including all subdirectories). Files and their names are not shown. If a folder has subfolders, it will be formatted as a link. Clicking on the folder name will expand or collapse the folder.