Custom Post Type Archive.php

From Codex:

  1. taxonomy-{taxonomy}-{term}.php – If the taxonomy were sometax, and taxonomy’s slug were someterm WordPress would look for taxonomy-sometax-someterm.php. In the case of Post Formats, the taxonomy is ‘post_format’ and the terms are ‘post-format-{format}. i.e. taxonomy-post_format-post-format-link.php

  2. taxonomy-{taxonomy}.php – If the taxonomy were sometax, WordPress would look for taxonomy-sometax.php

There is no custom post type custom taxonomy archive page. Custom taxonomy can exist without custom post type. So what you need is a taxonomy template.