Hard X-ray response of CdZnTe detectors in the Swift burst alert telescope

Masaya Suzuki^*, Makoto Tashiro, Goro Sato, Shin Watanabe, Kazuhiro Nakazawa, Tadayuki Takahashi, Yuu Okada, Hiromitsu Takahashi, Ann Parsons, Scott Barthelmy, Jay Cummings, Neil Gehrels, Derek Hullinger, Hans Krimm, Jack Tueller