Off-line radiometric analysis of Planck-LFI data

doi:10.1088/1748-0221/4/12/T12020

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Journal of Instrumentation Volume 4 December 2009 Create an alert RSS this journal

M Tomasi et al 2009 JINST 4 T12020 doi:10.1088/1748-0221/4/12/T12020

Off-line radiometric analysis of Planck-LFI data

OPEN ACCESS The Planck Low Frequency Instrument

M Tomasi^a, A Mennella^a, S Galeotta^b, S R Lowe^c, L Mendes^d, R Leonardi^e, F Villa^f, B Cappellini^g, A Gregorio^h, P Meinhold^e, M Sandri^f, F Cuttaia^f, L Terenzi^f, M Maris^b, L Valenziano^f, M J Salmonⁱ, M Bersanelli^a, P Binko^j, R C Butler^f, O D'Arcangelo^k, S Fogliani^b, M Frailis^b, E Franceschi^f, F Gasparo^b, G Maggio^b, D Maino^a, M Malaspina^f, N Mandolesi^f, P Manzato^b, M Meharga^j, G Morgante^f, N Morisset^j, F Pasian^b, F Perrotta^b, R Rohlfs^j, M Türler^j, A Zacchei^b and A Zonca^g

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tomasi@lambrate.inaf.it

^a Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
^b LFI-DPC INAF-OATs, Via Tiepolo 11, 34131 Trieste, Italy
^c Jodrell Bank Centre for Astrophysics, The University of Manchester, Manchester, M13 9PL, UK
^d Planck Science Office, European Space Agency, ESAC, P.O. box 78, 28691 Villanueva de la Cañada, Madrid, Spain
^e Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA
^f INAF-IASF Bologna, Via Gobetti, 101, 40129, Bologna, Italy
^g INAF-IASF Milano, Via E. Bassini 15, 20133 Milano, Italy
^h Department of Physics, University of Trieste, Via Valerio, 2 Trieste I-34127, Italy
ⁱ Departamento de Ingeniería de Comunicaciones, Universidad de Cantabria, Avenida de los Castros s/n. 39005 Santander, Spain
^j ISDC Data Centre for Astrophysics, University of Geneva, ch. d'Ecogia 16, 1290 Versoix, Switzerland
^k IFP-CNR, Via Cozzi 53, Milano, Italy

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Abstract References Cited By

Part of The Planck Low Frequency Instrument

The Planck Low Frequency Instrument (LFI) is an array of 22 pseudo-correlation radiometers on-board the Planck satellite to measure temperature and polarization anisotropies in the Cosmic Microwave Background (CMB) in three frequency bands (30, 44 and 70 GHz). To calibrate and verify the performances of the LFI, a software suite named LIFE has been developed. Its aims are to provide a common platform to use for analyzing the results of the tests performed on the single components of the instrument (RCAs, Radiometric Chain Assemblies) and on the integrated Radiometric Array Assembly (RAA). Moreover, its analysis tools are designed to be used during the flight as well to produce periodic reports on the status of the instrument. The LIFE suite has been developed using a multi-layered, cross-platform approach. It implements a number of analysis modules written in RSI IDL, each accessing the data through a portable and heavily optimized library of functions written in C and C++. One of the most important features of LIFE is its ability to run the same data analysis codes both using ground test data and real flight data as input. The LIFE software suite has been successfully used during the RCA/RAA tests and the Planck Integrated System Tests. Moreover, the software has also passed the verification for its in-flight use during the System Operations Verification Tests, held in October 2008.

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