Data Completeness

The Data Completeness item shows, for every data source, how much of the expected data arrived. Use it when data from the plant feeds a historian, a data lake or a warehouse, to see at a glance which sources are complete and which have gaps.

• Summary. The share of expected minutes received across all sources, and how many sources are Silent now, With gaps or Complete. When values are bound, the number of values stored.
• Row. One source, the weakest first: its share of minutes received, a strip with one bar per period (full, partly received or missing), and a short note: every minute received, the number of gaps and the longest one, or how long the source has sent nothing.

A source is Silent now when its last data is older than the silence limit, and With gaps when its share is below the complete limit or one of its gaps lasts an hour or more. Select a row to filter the other items of the dashboard by that source.

Data fields

Source, Period, Minutes received and Minutes expected are required: one row per source and period (usually an hour), with the minutes in which the source delivered data and the minutes the period had. Give every source a row for every period, also the periods in which it sent nothing, so a gap is a row with fewer minutes. Group, such as the plant, is shown under the name. Values stored adds the count of values to the summary. Minutes since last data is read as the smallest value per source and decides whether it is silent now.

Settings

• Complete from (%) is the share of minutes at which a source counts as complete.
• Silent after (min) is how long a source may send nothing before it counts as silent.

Where to see it

The Meridian demo plant uses it on Meridian · Data Feed Command Center.

Related

• Data Coverage
• Data Gaps
• Proxus dashboard items