The main purpose of quality control monitoring systems used as a standard in the production of a product is to reset the error percentage. However, in this way, perfect products are produced by reaching the root cause and correcting it by monitoring the errors occurring in semi-finished products. If you analyze the Quality Control data statistically, the system will already show where the problem is. Defect Concentration Diagram is a simple visual tool that helps to collect and analyze data for this purpose. It provides data collection by marking different colors for determined error types on the determined image of the product to be examined and focusing on the right place in a problem-solving step by visual analysis of this data.

Where to Use?

The Defect Concentration Diagram is used effectively in the following cases: for the definition of the problem, collecting data to show the effect of corrective actions on the product, searching for a product produced with a large number of errors, identifying the location of the problems.


Defect Concentration Diagram helps in positional diversity.

By identifying the locations of the errors, the causes of these errors can be investigated and possible solutions can be found.

It provides the opportunity to present evidence when talking about errors, proving that the problem is not an assumption.

Provides great convenience in data collection processes.

These benefits of the Defect Concentration Diagram make it a flexible tool that can be used in a wide range of fields (Production, Lab, Traffic, etc.). The benefits of Virtual Reality technology will be more effective in the near future as it will be more accessible in everyday life. Otokod’s LET (Leave an Error Trace) software provides a user-friendly tool for quality control in the industry and a powerful tool for raising the quality level, where quality is not only controlled.