WAFTT results part 2

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Observing schedules

This posting relies on the same observing schedules described by Reijo in the earlier posting Noise models and sky fractions for WAFTT.


Depth Maps

The hits maps "without elevation penalty" provided by Reijo were converted to depth maps as described in Noise models and sky fractions for WAFTT. The depth maps here differ from the depth maps in Noise models and sky fractions for WAFTT in atmospheric model.

The depth maps can be found on NERSC, /global/cscratch1/sd/mhasse/cmb-s4/fskytaskforce/190311/:

  • depth_el_min30.zip
  • depth_el_min40.zip
  • depth_el_min50.zip
  • gal_masks_eq.zip (this archive contains Reijo's galactic masks, converted to same pixelization as the depth maps)


Noise characteristics for minimum elevation of 50 degrees

Galactic cut (in %) 0 10 20 30
Sky fraction (in %) 57 52 45 39
Effective sky fraction for noise (in %) 52 47 41 35
Effective sky fraction for signal (in %) 47 43 37 32


Frequency (GHz) 20 27 39 93 145 225 280
white noise level TT (uK-arcmin) 51.9 17.5 9.7 1.6 1.7 5.3 12.7
ell knee TT 451 410 381 1254 4458 4370 4408
1/f exponent TT (uK-arcmin) -3.5 -3.5 -3.4 -3.0 -2.3 -3.4 -3.4
white noise level E/B (uK-arcmin) 73.3 24.8 13.7 2.3 2.4 7.5 17.9
ell knee E/B 700 467 467 467 467 467 467
1/f exponent E/B (uK-arcmin) -1.4 -1.1 -1.1 -1.1 -1.1 -1.1 -1.1

Noise characteristics for minimum elevation of 40 degrees

Galactic cut (in %) 0 10 20 30
Sky fraction (in %) 68 63 55 48
Effective sky fraction for noise (in %) 63 58 51 44
Effective sky fraction for signal (in %) 59 54 47 41


Frequency (GHz) 20 27 39 93 145 225 280
white noise level TT (uK-arcmin) 58.1 19.6 11.0 1.8 1.9 6.1 14.6
ell knee TT 475 433 395 1315 4651 4511 4525
1/f exponent TT (uK-arcmin) -3.5 -3.5 -3.4 -3.1 -2.3 -3.4 -3.4
white noise level E/B (uK-arcmin) 82.2 27.7 15.5 2.6 2.7 8.6 20.6
ell knee E/B 700 467 467 467 467 467 467
1/f exponent E/B (uK-arcmin) -1.4 -1.1 -1.1 -1.1 -1.1 -1.1 -1.1
White noise penalty (relative to f_sky scaling) 1.00 1.00 1.00 1.00 1.01 1.03 1.04

Noise characteristics for minimum elevation of 30 degrees

Galactic cut (in %) 0 10 20 30
Sky fraction (in %) 75 69 62 54
Effective sky fraction for noise (in %) 71 65 57 50
Effective sky fraction for signal (in %) 66 61 54 47


Frequency (GHz) 20 27 39 93 145 225 280
white noise level TT (uK-arcmin) 63.1 21.1 12.1 2.0 2.1 6.7 16.3
ell knee TT 502 458 410 1376 4820 4641 4632
1/f exponent TT (uK-arcmin) -3.5 -3.4 -3.4 -3.1 -2.3 -3.4 -3.4
white noise level E/B (uK-arcmin) 89.3 29.9 17.1 2.9 2.9 9.5 23.0
ell knee E/B 700 467 467 467 467 467 467
1/f exponent E/B (uK-arcmin) -1.4 -1.1 -1.1 -1.1 -1.1 -1.1 -1.1
White noise penalty (relative to f_sky scaling) 1.02 1.02 1.04 1.03 1.04 1.08 1.09

Foreground model

Forecast details