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Title: Extreme digitization for ground-based cosmic microwave background experiments

Abstract

The large size of the time-ordered data of cosmic microwave background experiments presents challenges for mission planning and data analysis. These issues are particularly significant for Antarctica- and space-based experiments, which depend on satellite links to transmit data. We explore the viability of reducing the time-ordered data to a few bit numbers to address these challenges. Unlike lossless compression, few bit digitization introduces additional noise into the data. We present a set of one, two, and three bit digitization schemes and measure the increase in noise in the cosmic microwave background temperature and polarization power spectra. The digitization noise is independent of angular scale and is well described as a constant percentage of the original detector noise. Three bit digitization increases the map noise level by <2 percent, while reducing the data volume by a factor of 10 relative to 32-bit floats. Extreme digitization is a promising strategy for upcoming experiments.

Authors:
 [1]; ORCiD logo [1]
  1. Univ. of Melbourne (Australia)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1577631
Resource Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 487; Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; polarization, techniques: miscellaneous; cosmic background radiation

Citation Formats

Balkenhol, L., and Reichardt, C. L. Extreme digitization for ground-based cosmic microwave background experiments. United States: N. p., 2019. Web. doi:10.1093/mnras/stz1497.
Balkenhol, L., & Reichardt, C. L. Extreme digitization for ground-based cosmic microwave background experiments. United States. doi:https://doi.org/10.1093/mnras/stz1497
Balkenhol, L., and Reichardt, C. L. Tue . "Extreme digitization for ground-based cosmic microwave background experiments". United States. doi:https://doi.org/10.1093/mnras/stz1497. https://www.osti.gov/servlets/purl/1577631.
@article{osti_1577631,
title = {Extreme digitization for ground-based cosmic microwave background experiments},
author = {Balkenhol, L. and Reichardt, C. L.},
abstractNote = {The large size of the time-ordered data of cosmic microwave background experiments presents challenges for mission planning and data analysis. These issues are particularly significant for Antarctica- and space-based experiments, which depend on satellite links to transmit data. We explore the viability of reducing the time-ordered data to a few bit numbers to address these challenges. Unlike lossless compression, few bit digitization introduces additional noise into the data. We present a set of one, two, and three bit digitization schemes and measure the increase in noise in the cosmic microwave background temperature and polarization power spectra. The digitization noise is independent of angular scale and is well described as a constant percentage of the original detector noise. Three bit digitization increases the map noise level by <2 percent, while reducing the data volume by a factor of 10 relative to 32-bit floats. Extreme digitization is a promising strategy for upcoming experiments.},
doi = {10.1093/mnras/stz1497},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 487,
place = {United States},
year = {2019},
month = {6}
}

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Works referenced in this record:

Astropy: A community Python package for astronomy
journal, September 2013


Optimization study for the experimental configuration of CMB-S4
journal, February 2018

  • Barron, Darcy; Chinone, Yuji; Kusaka, Akito
  • Journal of Cosmology and Astroparticle Physics, Vol. 2018, Issue 02
  • DOI: 10.1088/1475-7516/2018/02/009

Exploring cosmic origins with CORE: Survey requirements and mission design
journal, April 2018

  • Delabrouille, J.; de Bernardis, P.; Bouchet, F. R.
  • Journal of Cosmology and Astroparticle Physics, Vol. 2018, Issue 04
  • DOI: 10.1088/1475-7516/2018/04/014

Exploring cosmic origins with CORE: Cosmological parameters
journal, April 2018

  • Valentino, E. Di; Brinckmann, T.; Gerbino, M.
  • Journal of Cosmology and Astroparticle Physics, Vol. 2018, Issue 04
  • DOI: 10.1088/1475-7516/2018/04/017

Structure in the COBE differential microwave radiometer first-year maps
journal, September 1992

  • Smoot, G. F.; Bennett, C. L.; Kogut, A.
  • The Astrophysical Journal, Vol. 396
  • DOI: 10.1086/186504

Maps of the Southern Millimeter-wave Sky from Combined 2500 deg 2 SPT-SZ and Planck Temperature Data
journal, November 2018

  • Chown, R.; Omori, Y.; Aylor, K.
  • The Astrophysical Journal Supplement Series, Vol. 239, Issue 1
  • DOI: 10.3847/1538-4365/aae694

The Effects of Digitization on Nonstationary Stochastic Signals with Applications to Pulsar Signal Baseband Recording
journal, December 1998

  • Jenet, F. A.; Anderson, S. B.
  • Publications of the Astronomical Society of the Pacific, Vol. 110, Issue 754
  • DOI: 10.1086/316273

The temporal power spectrum of atmospheric fluctuations due to water vapor
journal, May 1997

  • Lay, O. P.
  • Astronomy and Astrophysics Supplement Series, Vol. 122, Issue 3
  • DOI: 10.1051/aas:1997154

The Primordial Inflation Explorer (PIXIE): a nulling polarimeter for cosmic microwave background observations
journal, July 2011


Quantizing for minimum distortion
journal, March 1960


HEALPix: A Framework for High‐Resolution Discretization and Fast Analysis of Data Distributed on the Sphere
journal, April 2005

  • Gorski, K. M.; Hivon, E.; Banday, A. J.
  • The Astrophysical Journal, Vol. 622, Issue 2
  • DOI: 10.1086/427976

Fast Cosmic Microwave Background Analyses via Correlation Functions
journal, February 2001

  • Szapudi, István; Prunet, Simon; Pogosyan, Dmitry
  • The Astrophysical Journal, Vol. 548, Issue 2
  • DOI: 10.1086/319105

How to Make Maps from Cosmic Microwave Background Data without Losing Information
journal, May 1997

  • Tegmark, Max
  • The Astrophysical Journal, Vol. 480, Issue 2
  • DOI: 10.1086/310631

NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: FINAL MAPS AND RESULTS
journal, September 2013

  • Bennett, C. L.; Larson, D.; Weiland, J. L.
  • The Astrophysical Journal Supplement Series, Vol. 208, Issue 2
  • DOI: 10.1088/0067-0049/208/2/20

THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT
journal, December 2016

  • Thornton, R. J.; Ade, P. A. R.; Aiola, S.
  • The Astrophysical Journal Supplement Series, Vol. 227, Issue 2
  • DOI: 10.3847/1538-4365/227/2/21

Cosmic microwave background temperature and polarization pseudo- C estimators and covariances
journal, July 2005


Planck 2015 results : XIII. Cosmological parameters
journal, September 2016


Matplotlib: A 2D Graphics Environment
journal, January 2007


Detection of B -Mode Polarization in the Cosmic Microwave Background with Data from the South Pole Telescope
journal, September 2013


Data analysis methods for the cosmic microwave background
journal, May 2007


Measurement of the Flux Density of CAS a at 4080 Mc/s.
journal, October 1965

  • Penzias, A. A.; Wilson, R. W.
  • The Astrophysical Journal, Vol. 142
  • DOI: 10.1086/148384

THE FIRST PUBLIC RELEASE OF SOUTH POLE TELESCOPE DATA: MAPS OF A 95 deg 2 FIELD FROM 2008 OBSERVATIONS
journal, November 2011


Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data
journal, January 2018

  • Henning, J. W.; Sayre, J. T.; Reichardt, C. L.
  • The Astrophysical Journal, Vol. 852, Issue 2
  • DOI: 10.3847/1538-4357/aa9ff4

The Impact of Atmospheric Fluctuations on Degree‐Scale Imaging of the Cosmic Microwave Background
journal, November 2000

  • Lay, Oliver P.; Halverson, Nils W.
  • The Astrophysical Journal, Vol. 543, Issue 2
  • DOI: 10.1086/317115

Neutrino physics from the cosmic microwave background and large scale structure
journal, March 2015


South Pole submillimeter sky opacity and correlations with radiosonde observations
journal, September 2001

  • Chamberlin, Richard A.
  • Journal of Geophysical Research: Atmospheres, Vol. 106, Issue D17
  • DOI: 10.1029/2001JD900208

Planck 2015 results : XXIII. The thermal Sunyaev-Zeldovich effect-cosmic infrared background correlation
journal, September 2016