Event Timeline

Use Cases

The Event Timeline shows the sequence and duration of events over time. This tool is most helpful early in the exploratory process to identify patterns that you want to investigate in more detail. This is a good tool to lead to Descriptive Statistics or Time-Series Correlation.

Specifications

The Event Timeline is a univariate analysis that you can perform on the Downtime model, the Defect model, or a categorical field on the Cycle model. You can select multiple machines of a given type.

Analysis

The Event Timeline is an exploratory tool that shows events over time, split by a category. If you select the Downtime or Defect model, the events are split by Reason. If you select the Cycle model, the events are split by a categorical field that you selected. The analysis plots a trace from the beginning to the end of each individual event, with time on the X axis and category values on the Y axis. Note that the Sight Machine platform treats defects as instantaneous events; defects are marked with a single timestamp. In addition, consecutive cycles are collapsed into one event. For example, on a machine with 1-minute cycles, ten consecutive cycles with the same category are shown as one 10-minute block instead of ten 1-minute blocks.

How to Use an Event Timeline

The Event Timeline tool allows you to see events over time for a particular model.

To use an Event Timeline:

  1. On the Analysis tab, under Data Exploration, click Event Timeline.
  2. On the main Event Timeline screen, select your options on the left. For more details about each option, see Event Timeline Options.
  3. Click Update.

Event Timeline Options

The Event Timeline options include:

  1.  Model: You can select:
    • Cycles
    • Defects
    • Downtimes
      For more information, see Models.
  2. Assets: You can select assets to monitor. For example, to perform a Cycles analysis, you need to select an asset to analyze. You can select 2 specific machines. If you are using the Parts model, you need to select a part type.
  3. Relative Range: You can define a date range of data points to analyze for the assets you have selected. For example, select the last 7 days. This option establishes the boundaries for the near real-time data that will be part of your analysis. Select from relative or absolute timeframes.
  4. Category: You can select a data field for comparison. Each unique value from this field is represented as a distinct timeline in the tool output.
  5. Carry-forwards: You can undo the forward-fill effect on any fields. Select from Keep All, First, or Last. For more information, see the table in Options Common to All Analysis Tools.
  6. Update: Click this button to generate your chart.

Tool Output

The Event Timeline displays model objects on a timeline, broken out by a selected data field.