Is this on-topic?
Yes. Welcome to Meta.
Well, that was easy.
Can I find out my ratio of ID questions?
Yes. Just plug your SFF.SE user ID into the box. Note that I have this query set up to search for all ID questions, not specifically story ID; so object-identification and character-identification questions will be included, as will our several other
You can get your SFF user ID by going to your profile and looking at the URL in your browser; it should look like
https://scifi.stackexchange.com/users/####/; the number that I've replaced with
# signs is your ID.
For example, mine is
31051. Yours is
Here's what my graph looks like:
That spike was on March 25, 2015, when I asked Who are these characters at the end of Deathly Hallows, Part 2?
As a general tip, SEDE will let you play around with some data, and will let you get loads of metrics that haven't been included in the site user interface. The caveat is that you need to have some experience with PostgreSQL, or be willing to learn.
Also bear in mind that SEDE updates once a week, on Saturday or Sunday (depending on your timezone).
Should I care about this number?
Based on what you wrote in the question, and some of your comments, you seem to be concerned that asking a large proportion of ID questions reflects poorly on you as a user of the site. It doesn't. Seriously, we don't care what you ask about1, as long as you're asking good questions. Nobody will think less of you if all (or most) of your questions are in a single tag.
Consider FuzzyBoots, for example2:
70-80% of his questions are ID questions, and that's been pretty consistent for the past two years. Alternately, consider Slytherincess (I changed the tag pattern to
%harry-potter% for this one):
There was a period of about two months where 100% of her questions were in harry-potter, and that ratio has been hovering pretty consistently around 80% for three years now.
Or, consider user14111 (ID questions again):
0.00% of their questions were ID questions for two and a half years, until Whose definition of "science fiction" is this? (tagged author-identification) was asked in September 2015
These are all high-rep, highly-respected users of the site. Nobody cares where you ask your questions, or even if you ask questions at all, as long as your posts are high-quality. Ask things that interest you.
1 As long as you ask about things that are on-topic, obviously
2 And if you're reading this, FuzzyBoots, I don't mean to pick on you; but you are the top story-identification asker