---
title: "Quartile Reporting"
slug: "quartile-reporting"
updated: 2024-08-21T20:17:14Z
published: 2024-08-21T20:17:14Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.tritondigital.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Quartile Reporting

Quartiles are a standard method for measuring the effectiveness of audio ads by determining what percentage of a given creative was heard by a user.

As the ad playback reaches every quarter of the total ad duration, the player fires a quartile report. Along with the start and complete events, there are five events to report. The URI to be fired to report each event is provided in `<Tracking>` elements under:

`<VAST><Ad><InLine><Creatives><Creative><Linear><TrackingEvents>`

Each `<Tracking>` element contains an "event" property that defines what event this element is for (there could be multiple `<Tracking>` elements for the same event).

- `start`: This event indicates that an individual creative within the ad was loaded and playback began.
- `firstQuartile`: The creative played continuously for at least 25% of the total duration at normal speed.
- `midpoint`: The creative played continuously for at least 50% of the total duration at normal speed.
- `thirdQuartile`: The creative played continuously for at least 75% of the duration at normal speed.
- `complete`: The creative was played to the end at normal speed so that 100% of the creative was played.

> [!NOTE]
> For podcast listening via download, ad delivery is done at the *file level* so quartiles are based on download percentage instead of listen-through. As such, download podcast quartiles will typically all be at 100% (unless the download is interrupted).