Once you've logged into your Qstream account and clicked on Insights at the top right, you'll see a list of ongoing and completed Qstreams. You can drill down into specific reports by clicking on the Qstream you want to see.
Clicking on the Proficiency tab will show you data that can help to pinpoint knowledge gaps. You can choose to view the data through different filters, including by department or by question. There are options to see the initial proficiency level, the current proficiency level and the % of proficiency improvement.
You can easily export this data by clicking on the Export Report button at the top right.