Data quality

The Data quality report is designed to assess the quality of telematics data received from monitored objects during the selected period. It helps identify missing or delayed data, gaps between packets, GPS problems, sudden coordinate jumps, and other anomalies.

The report helps determine whether the received data is reliable enough for building tracks, calculating mileage, processing sensor readings, and performing subsequent recalculations. It evaluates not only connection loss but also the quality of the data packets already received.

Indicators are calculated separately for each object for every day within the selected period.

What is analyzed

When assessing data quality, the system checks:

— delays in packet delivery to the server

— intervals between consecutive packets

— sudden coordinate jumps

— GPS signal quality, including the number of satellites and HDOP value

— invalid packets and packets without coordinates

— packets with duplicate timestamps

— instances where the maximum speed configured for the object was exceeded

What the report shows

Object — name or number of the monitored object
Start — beginning of the analyzed period
Stop — end of the analyzed period
Score — overall data quality score from 0 to 100. A higher score indicates better data quality
Status — overall data quality status:
ok— the data meets the configured requirements
warning— issues requiring attention were detected
bad— significant data quality problems were detected
no_data— no data is available for the analyzed period
Points — number of telematics packets received during the period
Issues — total number of detected anomalies
Delay max — maximum delay in packet delivery to the server
Gaps — number of significant gaps between consecutive packets
Longest gap — duration of the longest gap
GPS problems — number of problems caused by an insufficient number of satellites or an HDOP value exceeding the permitted threshold
Coord jumps — number of detected sudden coordinate jumps

Threshold values

The analysis uses configured thresholds for data transmission intervals, delivery delays, gaps, coordinate changes, and other parameters. These values can be configured individually for each object.

If specific parameters are not configured, the system uses default values and the object’s existing settings, including the minimum number of satellites, maximum HDOP, maximum speed, and permitted connection-loss duration.