Adding a sitemap to Google Webmaster Tools is the best way to analyze your blogger blog and also for search engine optimization. If you want to submit a sitemap for your blog/website, the address is http://www.google.com/webmasters/tools.
To find out sitemap of your blog domain.
1. Open your browser and type your blogger domain address like
2. At the end of the URL add robots.txt.
3. If you have http://TechMixture.blogspot.com then sitemap for your address will be http://TechMixture.blogspot.com/robots.txt.
4. Insert this sitemap address in your webmaster tools for analyze your web records and other purposes.
Best of luck.