{"ID":23047518,"CreatedAt":"2026-09-17T05:47:22.378464935Z","UpdatedAt":"2026-09-17T05:47:22.378464935Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2609.19105","arxiv_id":"2609.19105","title":"Characterization of the CSST Survey Camera CCDs: I. basic electro-optical performance","abstract":"The Chinese Space-station Survey Telescope (CSST) is a flagship mission designed to carry out a large-area high-resolution multiband imaging and slitless spectroscopic survey over a decade. The survey's science drivers, ranging from precision cosmology to stellar astrophysics, impose stringent requirements on the performance of its focal plane detectors. This paper is the first in a series that present ground-based characterization of the 31 flight-model charge-coupled devices (CCDs) of the CSST Survey Camera. Measurements of basic electro-optical performance are reported here. Key results include: full-well capacity \u003e80 ke (limited by the test electronics), non-linearity \u003c1.4% in the range of 7-70 ke, median readout noise 3.6 e, dark current \u003c0.02 e/pix/s at the operating temperature of -85 degree celsius, high quantum efficiency across the survey's spectral range (255-1000 nm), typical pixel response non-uniformity \u003c1%, and charge transfer efficiency \u003e99.9994% at the flat-field level of 10 ke. All 31 CCDs meet or exceed the Survey Camera's specifications. These measurements establish a performance baseline and provide inputs for CSST image simulation and data processing pipelines","short_abstract":"The Chinese Space-station Survey Telescope (CSST) is a flagship mission designed to carry out a large-area high-resolution multiband imaging and slitless spectroscopic survey over a decade. The survey's science drivers, ranging from precision cosmology to stellar astrophysics, impose stringent requirements on the perfo...","url_abs":"https://arxiv.org/abs/2609.19105","url_pdf":"https://arxiv.org/pdf/2609.19105v1","authors":"[\"Zun Luo\",\"Hu Zhan\",\"Youhua Xu\",\"Qiuyan Luo\",\"Yuhe Song\",\"Fajun Li\",\"Li Shao\",\"Zhe Huang\",\"Haonan Chi\",\"Huaipu Mu\",\"Xiaolei Meng\"]","published":"2026-09-16T17:35:50Z","proceeding":"astro-ph.IM","tasks":"[\"astro-ph.IM\"]","methods":"[]","has_code":false}