Using Pre_delete Signal in django

In my app I want to keep a track of all the questions that are being deleted. And so I have created a class(table) as such in my models file.

class Deleted(models.Model):
question = models.IntegerField(null=True, blank=True)#id of question being deleted
user = models.IntegerField(null=True, blank=True)#id of user deleting the question
dt = models.DateTimeField(null=True, blank=True)#time question is deleted

When a user tries to delete a question This delete function is called:

def delete_questions(request, user, questions):
  for q in questions:
        q.delete()

My doubt is how can i make a pre_delete signal of django to populate the new table I have created.

~newbie trying hefty task~ Thanks in advance:)