1: Appreciate it: a large data format (7)
2: Black gets closing party (5)
3: Bell tower providing temporary accommodation by a river (9)
4: Weird eastern lake (5)
5: St. Michael transforms metal transformer (9)
6: Reel around in circles (5)
7: Did glow confuse crazed cur? (4, 3)
8: Complains to Sammy re cast (7)
13: There's very little we back completely in status symbol (9)
14: Impugn guest in R.I. for clandestine affairs (9)
15: Dog leaps in puddles (7)
16: Graphically describe harbour light (7)
17: Heart of delicatessen, certainly, is meat (7)
19: Surpass former church leader, at first (5)
21: Feed all but the first stranger (5)
22: Tarka beheads scoundrel (5)