Bhagavad Gita, Chapter 18, Verse 23

An ordained action done without love or hatred by one not desirous of the fruit and free from attachment, is declared to be Sâttvika.

Real goodness in action is defined here by three specific conditions, not by how impressive the act looks.

Following scripture, staying free of bias, and expecting nothing back are named as what actually earns this classification. Real quality, once again, comes down to internal condition, not outward scale.