The Cadmium–Zinc–Telluride Imager (CZTI) is an imaging instrument onboard AstroSat. This instrument operates as a nearly open all-sky detector above 60 keV, making possible long integrations irrespective of the spacecraft pointing. We present a technique based on the AstroSat-CZTI data to explore the hard X-ray characteristics of the \(\gamma \)-ray pulsar population. We report highly significant (\(\sim \)30\(\sigma \)) detection of hard X-ray (60–380 keV) pulse profile of the Crab pulsar using \(\sim \)5000 ks of CZTI observations within 5 to 70 \(\circ \) of Crab position in the sky, using a custom algorithm developed by us. Using Crab as our test source, we estimate the off-axis sensitivity of the instrument and establish AstroSat-CZTI as a prospective tool in investigating hard X-ray characteristics of \(\gamma \)-ray pulsars as faint as 10 mCrab.

镉-锌-碲化物成像仪 (CZTI) 是 AstroSat 上的一种成像仪器。该仪器作为 60 keV 以上的近乎开放的全天探测器运行，无论航天器指向何处，都可以进行长时间的集成。我们提出了一种基于 AstroSat-CZTI 数据的技术来探索\(\gamma \)射线脉冲星群的硬 X 射线特征。我们报告了使用\(\sim \) 5000 ks 的 CZTI 观测值对蟹状脉冲星的硬 X 射线 (60–380 keV) 脉冲轮廓的高度显着 ( \(\sim \) 30 \(\sigma \) ) 检测5 到 70 \(\circ \)螃蟹在天空中的位置，使用我们开发的自定义算法。使用 Crab 作为我们的测试源，我们估计了仪器的离轴灵敏度，并建立 AstroSat-CZTI 作为研究\(\gamma \)射线脉冲星的硬 X 射线特征的前瞻性工具，该脉冲星微弱至 10 mCrab。