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20181029_beam_sidelobes_conviqt_simulation [2018/11/26 14:45] – [Partial cleaning] kyoung20181029_beam_sidelobes_conviqt_simulation [2018/12/11 14:56] (current) – kyoung
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   * 4 pi beams, main beam is at the plot center: {{::4pi_beam_moll_unclipped.png?direct&100| full sky beam}}   * 4 pi beams, main beam is at the plot center: {{::4pi_beam_moll_unclipped.png?direct&100| full sky beam}}
-    * These beams had the central 10 deg peak removed and filled with the value of the neighboring pixels. See this cut: {{::fsl_slice_xpol_w-clipped_beam.png?direct&100|}}+    * These beams had the central 10 deg peak removed and filled with the value of the neighboring pixels. This clipped beam was then used in conviqt. Original and clipped x-pol beam: {{::fsl_slice_xpol_w-clipped_beam.png?direct&100|}} y-pol is similar.
   * Input Galaxy maps, smoothed to 10 deg:{{::conviqt_in_201810_smooth10deg_iqu.png?direct&100|input to Conviqt, smoothed 10deg gaussian}}   * Input Galaxy maps, smoothed to 10 deg:{{::conviqt_in_201810_smooth10deg_iqu.png?direct&100|input to Conviqt, smoothed 10deg gaussian}}
   * Ouput maps from Conviqt nside=512:{{::conviqt_out_4detect_20181025_smooth0.1d_iqu.png?direct&100|output of conviqt, 4 detectors}}   * Ouput maps from Conviqt nside=512:{{::conviqt_out_4detect_20181025_smooth0.1d_iqu.png?direct&100|output of conviqt, 4 detectors}}
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   * Depth for 5 year for 1 wafer is 0.05 uK deg.     * Depth for 5 year for 1 wafer is 0.05 uK deg.  
   * Depth for 5 year for all 6 wafers is 0.02 uK deg.     * Depth for 5 year for all 6 wafers is 0.02 uK deg.  
 +  * Depth for the full mission is 0.01 uK deg.
  
 Intensity of sidelobes, all units are uK, Q and U are the median and max of absolute value of Q, U: Intensity of sidelobes, all units are uK, Q and U are the median and max of absolute value of Q, U:
-|           |       ^  I    ^  Q      ^  U     ^  +|                     |^  I    ^  Q     ^  U     ^ 
-|  Masked map |  Mean | 0.10  | 0.018  | 0.015  | +|  Masked map  |  Mean  | 0.10  | 0.018  | 0.015  | 
-|:::  |        Max  | 0.21  | 0.12   | 0.11   | +| :::          |  Max  | 0.21  | 0.12   | 0.11   | 
-|  Full map  |  Mean | 0.28  | 0.022  | 0.014  | +|  Full map    |  Mean  | 0.28  | 0.022  | 0.014  | 
-|:::  |        Max  | 2.6   | 0.58   | 0.14   |+| :::          |  Max  | 2.6   | 0.58   | 0.14   |
  
 When looking at the masked map, which is what makes sense for B-modes as this is the cleanest 40% of the sky, the average polarized sidelobe level is less than the map noise.  This takes away the simplest option of reducing the sidelobe power until its average is equal to the noise level.  Instead I reduced the sidelobe power until the max in the maxed region was approximately at the noise level.  This gives the following power spectra. When looking at the masked map, which is what makes sense for B-modes as this is the cleanest 40% of the sky, the average polarized sidelobe level is less than the map noise.  This takes away the simplest option of reducing the sidelobe power until its average is equal to the noise level.  Instead I reduced the sidelobe power until the max in the maxed region was approximately at the noise level.  This gives the following power spectra.
  
-  * Power spectra for masked FSL + 0.05 uK deg noise:{{::fsl_cls_nside64_41prct_sky_0.05uk_noise.png?direct&100|}} +  * Power spectra for masked FSL, no noise added. {{::fsl_cls_41prct_sky_no_noise_20181206.png?direct&100|FSL, no noise}} 
-  * Power spectra for masked FSL*0.6 + 0.05 uK deg noise:{{::fsl_cls_nside64_41prct_sky_0.05uk_noise_alpha0.6.png?direct&100|}}   (1 wafer 5 years) +  * Power spectra for masked FSL*0.6 + 0.05 uK deg noise: {{::fsl_cls_41prct_sky_a0.6_0.05ukdeg_noise_20181206.png?direct&100|}}  (1 wafer 5 years) 
-  * Power spectra for masked FSL*0.25 + 0.02 uK deg noise:{{::fsl_cls_nside64_41prct_sky_0.02uk_noise_alpha0.25.png?direct&100|}}   (6 wafers 5 years)+  * Power spectra for masked FSL*0.25 + 0.02 uK deg noise: {{::fsl_cls_41prct_sky_a0.25_0.02ukdeg_noise_20181206.png?direct&100|}}  (6 wafers 5 years) 
 +  * Power spectra for masked FSL*0.10 + 0.01 uK deg noise: {{::fsl_cls_41prct_sky_a0.10_0.01ukdeg_noise_20181206.png?direct&100|}} (Full CBE mission)
  
-For these power spectra I degraded the FSL map to nside=64 (roughly 1 deg pixels), multiplied by alpha, and added white noise where each map pixel value is drawn from a gaussian with sigma equal to the quoted noise level. The power spectra are calculated using the healpy anafast function.+For these power spectra I multiplied by the FSL map by alpha, added white noise where each map pixel value is drawn from a gaussian with sigma equal to the quoted noise level (scaled to appropriate pixel size, nside=512), and applied the galaxy mask. The power spectra are calculated using the healpy anafast function. 
 + 
 +**Bottom line:**  We need to remove about 60% of the sidelobes to get to r of 10^-3 and about 90% to reach r = 10^-4
 ===== Results location ===== ===== Results location =====
  
20181029_beam_sidelobes_conviqt_simulation.1543265153.txt.gz · Last modified: 2018/11/26 14:45 by kyoung

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