ESO Archive Frequently Asked Questions
CalSelector: Why does my query with CalSelector return a lot of incomplete associations?
It is probably because your request contains a mixture of science and non-science (e.g. acquisition images) files, which occasionally causes CalSelector to behave erratically. We would strongly encourage you to include only science files in the query (e.g. by selecting Science as Category in the main query interface) and let CalSelector associate the other relevant files.