Hello,
I understand that you would like to know how to determine which tables or datasets were causing the quota exceeded errors.
You can use the following filter [1] in Cloud Logging in order to get the requests with the quota exceeded. There in each request you will be able to see the table or dataset during which this error occurred.
You can also monitor usage in order to avoid or anticipate the errors associated with exceeding a limit:
1) You can see information about jobs and other resources available to query out-of-the-box using SQL in the information schema metadata views [2].
2) There are metrics and audit logging, which can also be exported for querying [3].
If you want to reset or raise a BigQuery quota, please contact Google Cloud Platform Support [4].
Best Regards,
Nibrass
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[1]