Seasonal Event Graphs

The seasonal event graphs display bar charts and confidence level event thresholds for seasonal events.

The Seasonal Event Graphs portlet consists of four charts:
Minute of the hour
The minute or minutes of the hour that the event occurs.
Hour of the day
The hour or hours of the day that the event occurs.
Day of the week
The day or days of the week that the event occurs.
Day of the month
The date or dates of the month that the event occurs.
The confidence level of the data in the charts is displayed in three ways:
  1. The overall distribution score of each chart is displayed as high (red), medium (orange), or low (green) seasonality at the top of each chart.
  2. The degree of deviation of the events is indicated by the high (red) and medium (orange) seasonality threshold lines on the charts.
  3. The maximum confidence level of each bar is displayed as high (red), medium (orange), or low (green).
The default confidence level thresholds are as follows:
  • High: 99-100%
  • Medium: 95-99%
  • Low: 0-95%
To modify the default confidence level thresholds of the charts, see Editing confidence thresholds of Seasonal Event Graphs.

Understanding graphs

The four seasonal event graphs illustrate event seasonality. The graphs depict independent observations. For example, if the Hour of the day graph indicates a high confidence level for 5 p.m., and the Minute of the hour graph indicates a high confidence level for minute 35, it does not necessarily mean that the events all occur at 5:35 p.m. The 5 p.m. value can contain other minute values.

Note: In some instances, Minute of the hour is indicated as having a high confidence level but the overall confidence level of seasonality is low. This is due to the high-level statistic that does not include minute of the hour due to poll cycle of monitors.
Note: In some instances, the overall confidence level of a chart is indicated as high although none of the bars in the graph are in the red zone. An example of this is a system failure due to high load and peak times, with no failure outside of these times.
The seasonal event graphs Count refers to the number of observations that are recorded in each graph. There is a maximum of one observation for each minute, hour, day, and date range. Therefore, the count for each of the graphs can differ. For example, if an event occurs at the following times:
  • 10:31 a.m., 1 June 2013
  • 10:31 a.m., 2 June 2013
  • 10:35 a.m., 2 June 2013
There is a count of two observations for 10 a.m., two observations for minute 31, and one observation for minute 35.