This article in ForbesIndia has what appears to be an adapted infographic showing the sounding rocket itself descending from apogee, deploying a parachute, and being recovered by the US Navy. The Wallops press release on the launch, which in NASA tradition was not trivial to search for, agrees:
The experiments, launch on a 36-foot long Terrier-Improved Orion sounding rocket, flew to an altitude of 72 miles and landed, via parachute, in the Atlantic Ocean. The payload has been recovered and the students are expected to receive their experiments this afternoon to begin their data analysis.
My guess is the satellite was contained, and recovered, as part of a monolithic payload.
A couple thoughts, since I found the process of getting this answer interesting:
- Bing lets you apply a date range to the searches, making it easy to filter out the initial press blitz. This is the only time I have ever found Bing legitimately useful.
- The blog post "From Gulabjamun to the Stars" appears to have post-launch pictures of the satellite (or a simulacrum?) At least one other blogger also claims to have seen Kalamsat post-return.
Though not images from that particular mission (and maybe not even of the same rocket type; I'm having trouble visually IDing sounding rocket pieces) I've found a LinkedIn post with pictures of a Wallops sounding rocket payload in the water and on a recovery boat.