Depending on test cases and types, different set of logs required for troubleshooting. Here're the details:
Taskit/PLTS (including control plane, carriers tests, CTIA OTA conformance tests and user plane test)
2-3 can be found at the subfolder under the same result database location. The name of subfolder will be "<result database name> - Logs".
EMQuest (CDMA CTIA test)