FastQC software
FastQC is a software developped by Babraham Bioinformatics group from Babraham Institute.
FastQC aims to provide a simple way to do some quality control checks on raw sequence data coming from high throughput sequencing pipelines. It provides a modular set of analyses which you can use to give a quick impression of whether your data has any problems of which you should be aware before doing any further analysis.
On the FastQC project page you can find a Documentation resource and some example reports.
Some posts dealing with FastQC fails cases are accessible on https://sequencing.qcfail.com/software/fastqc/.