Analyze and compare events
- Last UpdatedFeb 26, 2025
- 2 minute read
Events are important processes or business time periods that affect your operations. For example, an event can capture asset downtime, process excursions, operator shifts, or batches. You can analyze your data in the context of these events rather than by continuous time periods. Each event has a name, start time, end time, and associated data items (event attributes).
AVEVA PI Vision enables you to view and analyze your data during the time range of a particular event. For example, you may want to examine the performance of an asset during an operator shift or compare the data for several assets during a downtime period. You can compare multiple events on a single trend, analyze root causes, investigate an event by examining it in detail, and annotate it with notes that you can share with colleagues.
Each event has a severity level associated with it. The severity level is marked with a color-coded bar in front of each event in the Events pane and in Events tables. The severity level also appears on the Event Details page. Severity levels have the following default levels, names, and colors:
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Level 5:
Critical
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Level 4:
Major
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Level 3:
Minor
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Level 2:
Warning
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Level 1:
Information
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Level 0: None (no color)
Site administrators can set the colors for each event level, so the colors in your AVEVA PI Vision site may differ from those shown here. For information on setting defaults, see the PI Vision Installation and Administration Guide.
Training video
For more on this topic, watch the following video: