There are many analytics adapter plugins available to track header bidding performance for your site.
Further Content:
Each analytics provider has specific instructions for using their system, but these are the general steps:
gulp bundle --modules=exAnalyticsAdapter,xyzBidAdapter
pbjs.enableAnalytics() functione.g.
pbjs.que.push(function() {
  pbjs.enableAnalytics({
    provider: 'NAME',
    options: {
    [...]
    }
  });
});