Planck 2013 results. II. Low Frequency Instrument data processing
Abstract
We describe the data processing pipeline of the Planck Low Frequency Instrument (LFI) data processing centre (DPC) to create and characterize full-sky maps based on the first 15.5 months of operations at 30, 44 and 70 GHz. In particular, we discuss the various steps involved in reducing the data, starting from telemetry packets through to the production of cleaned, calibrated timelines and calibrated frequency maps. Data are continuously calibrated using the modulation induced on the mean temperature of the cosmic microwave background radiation by the proper motion of the spacecraft. Sky signals other than the dipole are removed by an iterative procedure based on simultaneous fitting of calibration parameters and sky maps. Noise properties are estimated from time-ordered data after the sky signal has been removed, using a generalized least square map-making algorithm. A destriping code (Madam) is employed to combine radiometric data and pointing information into sky maps, minimizing the variance of correlated noise. Noise covariance matrices, required to compute statistical uncertainties on LFI and Planck products, are also produced. Main beams are estimated down to the -20 dB level using Jupiter transits, which are also used for the geometrical calibration of the focal plane.
Keywords
Cite
@article{arxiv.1303.5063,
title = {Planck 2013 results. II. Low Frequency Instrument data processing},
author = {Planck Collaboration and N. Aghanim and C. Armitage-Caplan and M. Arnaud and M. Ashdown and F. Atrio-Barandela and J. Aumont and C. Baccigalupi and A. J. Banday and R. B. Barreiro and E. Battaner and K. Benabed and A. Benoît and A. Benoit-Lévy and J. -P. Bernard and M. Bersanelli and P. Bielewicz and J. Bobin and J. J. Bock and A. Bonaldi and L. Bonavera and J. R. Bond and J. Borrill and F. R. Bouchet and M. Bridges and M. Bucher and C. Burigana and R. C. Butler and B. Cappellini and J. -F. Cardoso and A. Catalano and A. Chamballu and X. Chen and L. -Y Chiang and P. R. Christensen and S. Church and S. Colombi and L. P. L. Colombo and B. P. Crill and M. Cruz and A. Curto and F. Cuttaia and L. Danese and R. D. Davies and R. J. Davis and P. de Bernardis and A. de Rosa and G. de Zotti and J. Delabrouille and C. Dickinson and J. M. Diego and H. Dole and S. Donzelli and O. Doré and M. Douspis and X. Dupac and G. Efstathiou and T. A. Enßlin and H. K. Eriksen and M. C. Falvella and F. Finelli and O. Forni and M. Frailis and E. Franceschi and T. C. Gaier and S. Galeotta and K. Ganga and M. Giard and G. Giardino and Y. Giraud-Héraud and E. Gjerløw and J. González-Nuevo and K. M. Górski and S. Gratton and A. Gregorio and A. Gruppuso and F. K. Hansen and D. Hanson and D. Harrison and S. Henrot-Versillé and C. Hernández-Monteagudo and D. Herranz and S. R. Hildebrandt and E. Hivon and M. Hobson and W. A. Holmes and A. Hornstrup and W. Hovest and K. M. Huffenberger and A. H. Jaffe and T. R. Jaffe and J. Jewell and W. C. Jones and M. Juvela and P. Kangaslahti and E. Keihänen and R. Keskitalo and K. Kiiveri and T. S. Kisner and J. Knoche and L. Knox and M. Kunz and H. Kurki-Suonio and G. Lagache and A. Lähteenmäki and J. -M. Lamarre and A. Lasenby and M. Lattanzi and R. J. Laureijs and C. R. Lawrence and S. Leach and J. P. Leahy and R. Leonardi and J. Lesgourgues and M. Liguori and P. B. Lilje and M. Linden-Vørnle and V. Lindholm and M. López-Caniego and P. M. Lubin and J. F. Macías-Pérez and G. Maggio and D. Maino and N. Mandolesi and M. Maris and D. J. Marshall and P. G. Martin and E. Martínez-González and S. Masi and M. Massardi and S. Matarrese and F. Matthai and P. Mazzotta and P. R. Meinhold and A. Melchiorri and L. Mendes and A. Mennella and M. Migliaccio and S. Mitra and A. Moneti and L. Montier and G. Morgante and N. Morisset and D. Mortlock and A. Moss and D. Munshi and P. Naselsky and P. Natoli and C. B. Netterfield and H. U. Nørgaard-Nielsen and D. Novikov and I. Novikov and I. J. O'Dwyer and S. Osborne and F. Paci and L. Pagano and R. Paladini and D. Paoletti and B. Partridge and F. Pasian and G. Patanchon and M. Peel and O. Perdereau and L. Perotto and F. Perrotta and E. Pierpaoli and D. Pietrobon and S. Plaszczynski and P. Platania and E. Pointecouteau and G. Polenta and N. Ponthieu and L. Popa and T. Poutanen and G. W. Pratt and G. Prézeau and S. Prunet and J. -L. Puget and J. P. Rachen and W. T. Reach and R. Rebolo and M. Reinecke and M. Remazeilles and S. Ricciardi and T. Riller and G. Robbers and G. Rocha and C. Rosset and M. Rossetti and G. Roudier and J. A. Rubiño-Martín and B. Rusholme and E. Salerno and M. Sandri and D. Santos and D. Scott and M. D. Seiffert and E. P. S. Shellard and L. D. Spencer and J. -L. Starck and V. Stolyarov and R. Stompor and F. Sureau and D. Sutton and A. -S. Suur-Uski and J. -F. Sygnet and J. A. Tauber and D. Tavagnacco and L. Terenzi and L. Toffolatti and M. Tomasi and M. Tristram and M. Tucci and J. Tuovinen and M. Türler and G. Umana and L. Valenziano and J. Valiviita and B. Van Tent and J. Varis and P. Vielva and F. Villa and N. Vittorio and L. A. Wade and B. D. Wandelt and R. Watson and I. K. Wehus and S. D. M. White and A. Wilkinson and D. Yvon and A. Zacchei and A. Zonca},
journal= {arXiv preprint arXiv:1303.5063},
year = {2014}
}