Hello Srinivas - this is not possible at the moment, however our staff should be able to retrieve it for you if necessary - you can use the Feedback link in the menu up top to send them a message.
Let me know if you need further assistance.
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As a workaround, if you really needed the data from your uploaded data file, you could load it into an app, create a table of the original data & download the table from the app itself.
Just don't access the app in streams as you cannot export data from published apps at this stage.
Hope this helps?