Based on your request. I believe it is encapsulated by the following Tableau Idea: https://community.tableau.com/ideas/6288
Which is requesting ability to track traffic to custom views on Tableau Server. As Matt Coles points out in the idea the access to the customer views can be captured via the HTTPD logs currently. But they are not retained for long do to the size the table can get and are only held for 7 days. I am not super familiar with the Alteryx program itself, so I am not sure if you would be able to use this to pull the custom dashaboard image from the view as you desired.
Hope this helps!