Euclid : Pixel-to-pixel readout noise correlation in HAWAII-2RG detectors
Year: 2026
Type: article
Abstract: We investigated the pixel-to-pixel noise correlations of HAWAII-2RG (H2RG) detectors using data from preflight testing performed for Euclid . We find that the detectors – in the absence of input signal, with and without the focal plane electronics that will be used on board Euclid – carry pixel-to-pixel noise correlations with varying amplitude across our sample of 23 detectors. We find a baseline level of order 10%, but with variations among detectors and portions of a given detector. We also observe occasional, significantly higher levels, which we attribute to fluctuations in alternative column noise. These fluctuations affect approximately a tenth of the total number of exposures and result in Pearson correlation coefficient values as high as 40% for the worst cases. While our sample of detectors is specific to Euclid , we expect our results to apply in general to the family of H2RG detectors, widely used in infrared astronomy.
Source: Astronomy and Astrophysics
Authors: G. M. Roudier, M. Seiffert, R. Barbier, A. Cillis, W. Gillard, W. Holmes, K. Jahnke, R. Kohley, P. M. Korngut, B. Kubik, M. Schirmer, A. Secroun, S. Wachter, B. Altieri, A. Amara, S. Andreon, N. Auricchio, C. Baccigalupi, M. Baldi, A. Balestra, S. Bardelli, P. Battaglia, A. Biviano, E. Branchini, M. Brescia, S. Camera, G. Cañas-Herrera, V. Capobianco, C. Carbone, J. Carretero, M. Castellano, G. Castignani, S. Cavuoti, K. C. Chambers, H. Cho, A. Cimatti, C. Colodro-Conde, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, F. Courbin, H. M. Courtois, A. Da Silva, H. Degaudenzi, G. De Lucia, H. Dole, F. Dubath, F. Ducret, X. Dupac, S. Dusini, S. Escoffier, M. Farina, R. Farinelli, F. Faustini, S. Ferriol, N. Fourmanoit, M. Frailis, E. Franceschi, M. Fumana, S. Galeotta, K. George, B. Gillis, C. Giocoli, J. Gracia-Carpio, A. Grazian, F. Grupp, S. V. H. Haugan, F. Hormuth, A. Hornstrup, P. Hudelot, M. Jhabvala, E. Keihänen, S. Kermiche, H. Kurki-Suonio, R. Laureijs, A. M. C. Le Brun, D. Le Mignant, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, G. Mainetti, D. Maino, E. Maiorano, O. Mansutti, O. Marggraf, M. Martinelli, N. Martinet, F. Marulli, R. J. Massey, E. Medinaceli, S. Mei, M. Meneghetti, E. Merlin, G. Meylan, A. Mora, M. Moresco, L. Moscardini, S.-M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L. A. Popa, F. Raison, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, M. Roncarelli, E. Rossetti, R. Saglia, Z. Sakr, D. Sapone, B. Sartoris, P. Schneider, T. Schrabback, M. Scodeggio, G. Seidel, S. Serrano, C. Sirignano, J. Skottfelt, L. Stanco, J. Steinwagner, P. Tallada-Crespí, A. N. Taylor, H. I. Teplitz, I. Tereno, N. Tessore, S. Toft, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, L. Valenziano, J. Valiviita, T. Vassallo, G. Verdoes Kleijn, Y. Wang, J. Weller, G. Zamorani, J. Martín-Fleitas, V. Scottez
Institutions: Jet Propulsion Laboratory, Lyon 1 Université, Aix-Marseille Université, Max Planck Institute for Astronomy, European Space Astronomy Centre, California Institute of Technology, Carnegie Observatories, University of Surrey, Brera Astronomical Observatory, National Institute for Astrophysics, Osservatorio di Astrofisica e Scienza dello Spazio, Scuola Internazionale Superiore di Studi Avanzati, Trieste Astronomical Observatory, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Institute for Fundamental Physics of the Universe, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, University of Bologna, Osservatorio Astronomico di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Genova, University of Genoa, Astronomical Observatory of Capodimonte, University of Naples Federico II, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Osservatorio Astrofisico di Torino, University of Turin, Leiden University, European Space Agency, Leiden Observatory, European Space Research and Technology Centre, Port d'Informació Científica, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Astronomical Observatory of Rome, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, University of Hawaiʻi at Mānoa, University of Hawaii System, Instituto de Astrofísica de Canarias, Royal Observatory, University of Edinburgh, University of Manchester, European Space Research Institute, Institució Catalana de Recerca i Estudis Avançats, Institut de Ciències del Cosmos, Universitat de Barcelona, University of Lisbon, Institute of Astrophysics and Space Sciences, University of Geneva, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut d'Astrophysique Spatiale, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Institute for Space Astrophysics and Planetology, Agenzia Spaziale Italiana, Ludwig-Maximilians-Universität München, Max Planck Institute for Extraterrestrial Physics, University of Oslo, Technical University of Denmark, Institut d'Astrophysique de Paris, Sorbonne Université, Goddard Space Flight Center, Helsinki Institute of Physics, University of Groningen, Université Paris Sciences et Lettres, Observatoire de Paris, Laboratoire d'Étude de l'Univers et des Phénomènes Extrêmes, SKA Observatory, Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules, University of Milan, Istituto Nazionale di Fisica Nucleare, Sezione di Milano, University of Bonn, Istituto Nazionale di Fisica Nucleare, Sezione di Roma I, Durham University, Université Paris Cité, Institut National de Physique Nucléaire et de Physique des Particules, Centre Pierre Binétruy, École Polytechnique Fédérale de Lausanne, Institute for High Energy Physics, Barcelona Institute of Science and Technology, University of Copenhagen, Centre National d'Études Spatiales, University of Padua, Université Fédérale de Toulouse Midi-Pyrénées, Saint Joseph University, Heidelberg University, Institut de Recherche en Astrophysique et Planétologie, University of Chile, Universität Innsbruck, Institute of Space Sciences, Institut d'Estudis Espacials de Catalunya, The Open University, Infrared Processing and Analysis Center, University College London, Universidad Politécnica de Cartagena, Université Catholique de Lille
Language: English
Topic: CCD and CMOS Imaging Sensors
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,865
OpenAlex ID: W7202173267
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