Usually no—digital is generally better for astrophotography, even if your DSLR shows hot pixels on long exposures.

Film avoids hot/dead pixels, but it has major drawbacks for night sky work:

• Reciprocity failure: film becomes less efficient during very long, low-light exposures, so exposure times often need to be much longer than expected.
• Lower practical sensitivity: commonly available film is usually less flexible than digital at high ISO.
• Grain: faster film tends to be grainier.

Digital hot pixels are usually manageable. In astrophotography, images are commonly made by taking many shorter exposures and stacking them in processing, which helps reduce noise and makes hot pixels much less of a problem. This approach is usually better than one very long exposure on film.

Also, without a tracking mount, both film and digital are limited in exposure length before stars begin to trail—unless star trails are the goal.

So, film can be used for artistic or specialty projects, but for most astrophotography, digital is the more practical and capable choice.