GIFTS Exemplar Gamma-ray Bursts (GRBs) Catalog

Gamma-ray Investigation of the Full Transient Sky (GIFTS) is a 6U CubeSat under development, whose mission aim is the detection and localization of gamma-ray bursts (GRBs) from low Earth orbit in the multi-messenger era. The GIFTS instrument comprises six cerium bromide (CeBr$_3$) scintillator detectors with different orientations, which are arranged into two three-detector clusters within the CubeSat housing, and will have the capability to detect gamma rays in an energy range of approximately 30 keV to 2 MeV. Following the GIFTS mission launch, two public catalogs will be provided: a Trigger Catalog containing information about every GIFTS trigger, and a Burst Catalog containing data products for all GRBs detected by the ground segment pipeline during follow-up analysis of burst and TTE data generated by the onboard payload processor pipeline. Inspired by the NASA HEASARC Fermi-GBM catalogs, these will be implemented as online catalogs, providing operator-verified metadata and product files for detected bursts and their corresponding payload and ground localizations. Prior to launch, this prototype post-launch burst catalog containing exemplar (simulated) products for six GRBs has been provided to illustrate the expected contents of the eventual catalog. The GIFTS Gamma-ray Data Tools (GDT) is a toolkit for GIFTS data products, which is built on the GDT Core Package and Fermi Gamma-ray Data Tools. The current toolkit is a prototype that services this exemplar GIFTS catalog containing simulated GIFTS data products generated during payload processing pipeline development. The public data catalog that will be provided following the GIFTS mission launch will also be accompanied by corresponding future versions of the toolkit.全瞬态天区伽马射线探测任务（Gamma-ray Investigation of the Full Transient Sky，GIFTS）是一颗处于研发阶段的6U立方星（CubeSat），其任务目标是在多信使时代（multi-messenger era）从近地轨道探测并定位伽马射线暴（gamma-ray bursts，GRBs）。GIFTS载荷由六台朝向各异的溴化铈（cerium bromide，CeBr₃）闪烁探测器构成，这些探测器被排布在立方星舱内的两个三探测器簇中，可探测能量范围约30 keV至2 MeV的伽马射线。 任务发射后将发布两份公开目录：其一为触发目录（Trigger Catalog），收录所有GIFTS触发事件的相关信息；其二为暴源目录（Burst Catalog），包含地面段管线在对星载载荷处理器管线生成的暴源与时间标记事件（Time-Tagged Event，TTE）数据开展后续分析时，所探测到的全部伽马射线暴的数据产品。该目录参考了美国国家航空航天局（NASA）高能天体物理科学档案研究中心（HEASARC）的费米伽马射线暴监视器（Fermi-GBM）目录，将以在线目录形式上线，提供经操作人员验证的元数据，以及探测到的暴源及其对应星载与地面定位结果的相关产品文件。发射前，该任务已发布原型级发射后暴源目录，其中包含六次伽马射线暴的模拟示例产品，用以展示最终正式目录的预期内容。 GIFTS伽马射线数据工具集（GIFTS Gamma-ray Data Tools，GDT）是面向GIFTS数据产品开发的专用工具包，基于GDT核心包（GDT Core Package）与费米伽马射线数据工具（Fermi Gamma-ray Data Tools）构建。当前工具包为原型版本，可支撑该示例GIFTS目录的服务，该目录包含载荷处理管线开发阶段生成的模拟GIFTS数据产品。GIFTS任务发射后上线的公开数据目录，也将配套对应版本的后续更新工具包。