If you want to track your OutSavvy traffic for an event you will need to link your Google Analytics account to OutSavvy. Select your event on the My Events screen then navigate to Event Reporting > Event Tracking in the Dashboard menu and select the Google Analytics option. You can find more details about how to add the tracking pixel here.
You can also download guest & order specific data regarding your event. Select your event on the My Events screen then navigate to Event Reports > Event Reporting in the Dashboard menu. Select the data you want to download by selecting/deselecting each field. Browse to the bottom of the screen to download a CSV data report.