How do I conclude if a query to SAP HANA is coming from Explorer?

Dear Colleagues and Experts,

How do I conclude if a query to SAP HANA is coming from Explorer?

In my observations I found that a query coming from explorer has a UTF-8 = eng_US" at the end which I conclude that the query is coming from explorer and second is the User name through which we can say it is from the explorer.

Is there any thing else which let us know that the query is coming from Explorer?

Thanks,

Aditya.