Twitter analytics previously available to only Twitter advertisers are now available for everyone.
With Twitter analytics you can view the performance of your Twitter accounts with details such as how many retweets, favourites or mentions you are getting.
These analytics also allow you check the details about followers such as their geographic location.
Analytics data can be downloaded as CSV file to computer.
Go to analytics.twitter.com and use your Twitter login. Then allow access to Twitter Ads app. Click Analytics tab.