A good dad is in his child's life completely, even if he isnt living with the child.
He knows his kid's school, routine, likes and dislikes, knows the child's friends, can tell when something is bothering his child, drops everything when his child needs him, goes to parent consultations, knows who his kid's gp and dentist are, can make appointments, can attend appointments, properly financially provides for his child, cooks food for his child, sticks the washing on, goes to the child's events, advocates for his child, doesnt badmouth the child's mother, has clear and firm boundaries for the child, models appropriate behaviour, is able to say sorry to his child if he messes up, is someone his child feels safe with and can open up to, etc etc
All the same stuff that makes a woman a good mum.