Using the Process Analyst > Process Analyst for Operators > Understanding Process Analyst Pens > Data Quality

Data Quality

Process Analyst pens use the same sample quality values as CitectSCADA trend and alarm samples. There are four sample quality values:

The Process Analyst uses the following default line styles to indicate data quality:

Quality Line style

Good

Solid

NA

None

Gated

Dot

Consider the following examples:

Data sample Description

This example shows several single samples. The third sample has a quality of N/A, indicated by the break in the trend line.

Here the quality of the third sample is gated, indicated by the broken line connecting these samples.

With multiple samples, the quality of the last sample in the group determines how the line is drawn. Consider the following examples:

This example shows that the third sample is a multiple sample. The quality of the third (multiple) sample and the next sample are N/A, indicated by the break in the trend line.

Here the quality of the third multiple sample is gated, indicated by the broken line connecting the samples.

The line style indicating the data quality is configurable during run time and design time; for details, see Configuring pen quality.