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20180919_aps_sevem

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20180919_aps_sevem [2018/10/25 04:24] – grocha20180919_aps_sevem [2018/10/25 05:38] (current) – grocha
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 - added the BandPowers for Sevem maps at 62GHz, case17 (90.00) for full-sky - to investigate the lack of BB power in the cut-sky case (with mask not apodised). - added the BandPowers for Sevem maps at 62GHz, case17 (90.00) for full-sky - to investigate the lack of BB power in the cut-sky case (with mask not apodised).
  
-{{font color|red|Updates (on October 25th, 2018)}} \\+{{font color|red|Updates (on October 24th, 2018)}} \\
 added the BandPowers for Sevem maps at 62GHz, case17 (90.00) for apodized mask - to investigate the lack of BB power in the cut-sky case with a mask not apodised. added the BandPowers for Sevem maps at 62GHz, case17 (90.00) for apodized mask - to investigate the lack of BB power in the cut-sky case with a mask not apodised.
  
 +{{font color|red|Updates (on October 25th, 2018)}} \\
 +added the Bandpowers for the combined map, combined_90_108_129_155, Model 90, for 2 apodized masks and one non-apodized mask. The BB-spectra exhibits a lack of power at low-ell, for all masks. This is currently being investigated.
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-==Apodized mask, 62GHzm case 90.00 lmax=1000==+====Test case for apodized mask, 62GHz - case 90.00 ==== 
 + 
 +==Apodized mask, 62GHz case 90.00 lmax=1000==
  
 Sevem Bandpowers for case17, 62Ghz, with apodized mask (dark blue data points), vs the input model (solid orange line) for lmax=1000, and full-sky (light blue data points) and non apodized mask (black data points). Sevem Bandpowers for case17, 62Ghz, with apodized mask (dark blue data points), vs the input model (solid orange line) for lmax=1000, and full-sky (light blue data points) and non apodized mask (black data points).
  
-As shown: The BB bandpowers still exhibit deficit of power at low -ell. This seems to indicate that the mask is not the source of the problem. Note that the same mask kernel is applied in the other frequencies which do not show deficit, in fact the input BB spectra is recovered well - which indicates that the kernel should be fine.On the other hand the full-sky case recovers well the input BB spectra indicating that the inputs should be fine as well (ie no misestimation of the noise or something else going on here) - hence it is unclear what is causing this lack power.+As shown: The BB bandpowers still exhibit deficit of power at low -ell. This seems to indicate that the mask is not the source of the problem. Note that the same mask kernel is applied to the other frequencies (plots above) which do not show deficit, in fact the input BB spectra is recovered well - this indicates that the kernel should be fine. On the other hand the full-sky case recovers well the input BB spectra indicating that the inputs should be fine as well (ie no mis-estimation of the noise or something else going on here) - hence it is unclear what is causing this lack power. I am currently investigating this and checking the iterations and convergence.
  
  
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-==Apodized mask, 62GHzm case 90.00 lmax=300==+==Apodized mask, 62GHz case 90.00 lmax=300==
  
 Sevem Bandpowers for case17, 62Ghz, with apodized mask (dark blue data points), vs the input model (solid orange line) for lmax=300, and full-sky (light blue data points) and non apodized mask (black data points). Sevem Bandpowers for case17, 62Ghz, with apodized mask (dark blue data points), vs the input model (solid orange line) for lmax=300, and full-sky (light blue data points) and non apodized mask (black data points).
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 || **EE** || **BB**|| || **EE** || **BB**||
 ||{{sevem_62_EE_all_l300.png?700}}||{{sevem_62_BB_all_l300.png?700}}|| ||{{sevem_62_EE_all_l300.png?700}}||{{sevem_62_BB_all_l300.png?700}}||
 +|| || ||
 +
 +----
 +
 +
 +==== Combined map - case 90.00 ====
 +
 +Sevem Bandpowers for the map combined_90_108_129_155, vs the input model (solid orange line) for lmax=1000
 +
 +inputs in dir: /project/projectdirs/pico/reanalysis/compsepmaps/sevem_04.00_181011/MODEL90.91/\\
 +
 +data: data_combined_90_108_129_155_fwf15.0d0.fits \\
 +noise: noise_combined_90_108_129_155_fwf15.0d0.fits\\
 +
 +masks: /project/projectdirs/pico/reanalysis/compsepmaps/sevem_04.00_180815/\\
 +mask0.15_pol_sm7deg_nu0p45_up512_sm7deg_nu0p57_apocos5pix.fits - maskapo\\
 +mask0.15_pol_sm7deg_nu0p45_up512_apocos5pix.fits - maskapo_v1\\
 +mask0.15_pol_sm7deg_nu0p45_up512.fits - mask\\
 +
 +
 +While all spectra is recovered reasonably well for all masks, BB spectra exhibits lack of power at low-ell for both apodized and non-apodized masks. This is currently being investigated.
 +
 +
 +||border=1, width=1400, align=center
 +|| **TT** || **TE** ||
 +||{{sevem_m90_TT_all_l1000.png?700}}||{{sevem_m90_TE_all_l1000.png?700}}||
 +|| || ||
 +
 +||border=1, width=1400, align=center
 +|| **EE** || **BB**||
 +||{{sevem_m90_EE_all_l1000.png?700}}||{{sevem_m90_BB_all_l1000.png?700}}||
 || || || || || ||
  
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-==== NILC ====+===== NILC =====
  
 Problem shown in the plots below - trying to understand whether the issue is in the component separation step or misinterpretation of the inputs for bandPower estimation. Problem shown in the plots below - trying to understand whether the issue is in the component separation step or misinterpretation of the inputs for bandPower estimation.
20180919_aps_sevem.1540459444.txt.gz · Last modified: 2018/10/25 04:24 by grocha

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