Inspected Zenodo record 5137717 and its API metadata for the PESO prostate epithelium segmentation dataset.
Catalogued all 18 deposit files, exact byte sizes, MD5 checksums, direct download endpoints, formats, stated image resolutions, and dataset semantics.
Used byte-range reads of ZIP central directories to verify archive member counts and filenames without downloading the approximately 138 GB deposit.
Assessed one-file-at-a-time access: Zenodo serves archive-level objects with HTTP byte ranges, but does not expose inner ZIP members as standalone resources.
Lessons Learned: Pitfalls
Two archives named peso_testset_png*.zip are described as PNG exports, but their members are actually .jpg; relying only on the record prose would miss this discrepancy.
Standard download tools treat each 12–15 GB WSI archive as one object. Reading one member remotely requires a range-aware ZIP implementation and careful handling of ZIP64 and deflated members.
Lessons Learned: Improvements
A reusable remote ZIP inventory tool supporting ZIP64 would speed future large public-dataset audits while avoiding full downloads.
Dataset ingestion guidance should distinguish server-side per-file URLs from client-side range extraction of members inside compressed archives.
