Problem with the nPixelsRange parameter:
date 27/01/09
The problem of nPixRange is fixed. (See below for informations about the nPixRange problem: post 15/01/09)
Hereafter are the new covariance matrixes of offsets for differents nSides!!
CONCLUSION:
The matrix covariance elements doesn't have aberrant values anymore. A sinusoidal modulation can be seen on each plot of the diagonal. Further study at Covariance Matrix (Diagonal Pattern, Correlation Length)
- Caracteristics of the data:
bolo = 217-5a ( WARNING: It is not the bolometer used on first results)
nPixelsRange = 200000
Calibration1 = 1.57824699879e-13
crossPolarization1 = 1
polarizerAngle1 = 45.0
endRing = 13098
beginRing = 580
BeamID1 = BeamI:Ellipse
IMOFile = 15710361
AstroFrame = GALACTIC
thresholdForStart = 5e-25
thresholdForConvergence = 1e-34
Covariance matrix, Diagonal, Antidiagonal for nSide=128, 256, 512, 1024, 2048
| nSide | Covariance Matrix | Diagonal |
| 128 |  |  |
| 256 |  |  |
| 512 |  |  |
| 1024 |  |  |
| 2048 |  |  |
The antidiagonal of the covariance matrix for nSide = 128 in log10 scale!
date: 15/01/09
CONCLUSION:
- The behavior explained in the CONCLUSION of first results is confirmed.
Here nPixRange=200000, The results seems correct for nSide=128 but not for 256 or 512.
- The sinusoidal pattern of the diagonal for nSide=128 seems correlated to the number of elements in HPR!!
Further inverstigation at Diagonal Pattern
- Caracteristics of the data:
bolo = 143-5
nPixelsRange = 200000
The other parameters should be the same as first results.
Covariance matrix will be diplayed for nSide=128, 256, 512
Caracteristic values of the matrix:
min = -1.5311445e-09
max = 2.9305839e-06
mean = 1.8151304e-10
| Covariance matrix between the ring 0 and 5000 scaled between -2e-9 and 5e-9 | The full Covariance matrix after a decrease of the resolution (by a factor 3 with the method OnePoint) and scaled between -2e-9 and 5e-9 |
 |  |
| Profil of the diagonal of the Covariance matrix | Profil of the antidiagonal of the Covariance matrix (logscale) |
 |  |
Caracteristic values of the matrix:
min = -6.4239363e-08
max = 2.2842819e-05
mean = 7.5841406e-10
| Covariance matrix between the ring 0 and 5000 scaled between -4e-8 and 8e-8 | The full Covariance matrix after a decrease of the resolution (by a factor 3 with the method OnePoint) |
 |  |
| Profil of the diagonal of the Covariance matrix | Profil of the antidiagonal of the Covariance matrix (logscale) |
 |  |
Caracteristic values of the matrix:
min = -7.3378012e+29
max = 6.7599670e+29
mean = -1.1941340e+22
The full Covariance matrix after a decrease of the resolution (by a factor 3 with the method OnePoint)
and scaled between -4e-7 and 4e-7
