Hi Arpit. I have been trying to answer the same question and may have an answer for you.
Unfortunately this naming convention is not documented under Dispatch directory and search artifacts:
https://docs.splunk.com/Documentation/SplunkCloud/7.0.0/Search/Dispatchdirectoryandsearchartifacts
However, I found some information on the real-time metadata search in this post. Its a query that is embedded in the search app page which automatically retrieves a user's data:
https://answers.splunk.com/answers/171350/how-to-disable-real-time-searches-that-run-when-lo.html
I hope this helps!!
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