Yes, by batch numbers, by vaccinators, and by jab-clinic location. Barry Young analyzed it statistically ('there are many ways to slice-and-dice the data' he said), and any way it was presented the numbers were very alarming.
For example, a vaccinator could have caused deaths (or at least increased the chances of death) by injecting the jab contents directly into the bloodstream (I think Pfizer says at least 4mm into the deltoid, but this is easy to foul up). Sometimes the vaccinator prefers to squeeze the skin at the injection site, then insert the needle, and that may cause the needle to miss the deltoid entirely.
Of course an individual batch could be contaminated with foreign matter -- or have many times more of the active ingredient than other batches (also a known problem).
And a locale having a statistically higher incidence of deaths warrants investigation too -- maybe they have multiple bad batches, or a combination of bad batches and bad vaccinator technique, or an especially older age group of subjects.
Personally I think every batch is "bad"; some batches may be worse than others.
Yes the kiwi government has been one of the most tyrannical in the world regarding the "vaccine" rollout.