Tibeuleu/FOC_Reduction
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add fonction to compute confidence map of center of emission location

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Thibault Barnouin
2024-09-06 17:28:01 +02:00
parent 904d298398
commit bf5373d4e0
1 changed files with 17 additions and 0 deletions
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17
package/lib/utils.py
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@@ -39,6 +39,23 @@ def PCconf(QN, UN, QN_ERR, UN_ERR):
conf[mask] = 1.0 - np.exp(-0.5 * chi2[mask]) conf[mask] = 1.0 - np.exp(-0.5 * chi2[mask])
return conf return conf
def Centerconf(mask, PA, sPA):
"""
Compute the confidence map for the position of the center of emission.
"""
chi2 = np.full(PA.shape, np.nan)
conf = np.full(PA.shape, -1.0)
yy, xx = np.indices(PA.shape)
def ideal(c):
itheta = np.degrees(np.arctan((yy+0.5-c[1])/(xx+0.5-c[0])))
itheta[np.isnan(itheta)] = PA[np.isnan(itheta)]
return princ_angle(itheta)
def chisq(c):
return np.sum((princ_angle(PA[mask])-ideal((x,y))[mask])**2/sPA[mask]**2)/np.sum(mask)
for x,y in zip(xx[np.isfinite(PA)],yy[np.isfinite(PA)]):
chi2[y,x] = chisq((x,y))
conf[mask] = 1.0 - np.exp(-0.5*chi2[mask])
return conf
def sci_not(v, err, rnd=1, out=str): def sci_not(v, err, rnd=1, out=str):
""" """