def check_distance(self):
cat = self.cat0
cat["D_Z"] = cat["Redshift_Cosmological"].map(lambda x: z2d(x, h=1.0, wm=self.wm))
cat["colour"] = cat["Johnson_B_Apparent"] - cat["Johnson_R_Apparent"]
cat["K Correction"] = cat.apply(apply_kcor, axis=1)
cat["DM"] = cat["Johnson_B_Apparent"] - cat["Johnson_B_Absolute"] - cat["K Correction"]
cat["D Lum"] = cat["DM"].map(lambda x: math.pow(10, 0.2 * x + 1) / 1.0e6)
cat["D_M"] = cat.apply(self.make_d_m(), axis=1)
cat["Diff"] = cat.apply(calc_diff, axis=1)
stats = cat["Diff"].describe()
logger.info("Stats:\n{0}".format(stats))
logger.debug("First 10:\n{0}".format(cat.head(10)))
if abs(stats["mean"]) > self.job_params.MAX_MEAN_DIFFERENCE:
logger.error("Mean difference {0} exceeds {1}".format(stats["mean"], self.job_params.MAX_MEAN_DIFFERENCE))
if abs(stats["max"]) > self.job_params.MAX_MAX_DIFFERENCE:
logger.error("Max difference {0} exceeds {1}".format(stats["max"], self.job_params.MAX_MAX_DIFFERENCE))
if abs(stats["mean"]) < self.job_params.MIN_MEAN_DIFFERENCE:
logger.error(
"Mean difference {0} is less than {1}".format(stats["mean"], self.job_params.MIN_MEAN_DIFFERENCE)
)
if abs(stats["max"]) < self.job_params.MIN_MAX_DIFFERENCE:
logger.error("Max difference {0} is less than {1}".format(stats["max"], self.job_params.MIN_MAX_DIFFERENCE))
return
header = data.readline()
headers = header.split(csv_delimiter)
ids = {}
for field in required_fields:
if required_fields[field] in headers:
ids[field] = headers.index(required_fields[field])
if len(ids) != len(required_fields):
print "can't find all required fields in the catalogue."
sys.exit()
print " z(TAO) d(TAO) d(z) d(DM) diff %"
for i in range(0,n):
line = data.readline()
values = line.split(csv_delimiter)
z = float(values[ids['z']])
d = float(values[ids['d']])
b_abs = float(values[ids['b_abs']])
b_app = float(values[ids['b_app']])
r_app = float(values[ids['r_app']])
d_z = z2d(z, 1) # [Mpc/h]
color = b_app - r_app
k_corr = calc_kcor('B', z, 'B - Rc', color)
dm = b_app - b_abs - k_corr # distance modulus
d_lum = math.pow(10, 0.2*dm + 1)/1e6 # luminosity distance [Mpc]
d_m = h*d_lum/(1+z) # co-moving distance [Mpc/h]
diff = 100*d_m/d - 100; # %
print "%e\t%e\t%e\t%e\t%.2f" % (z, d, d_z, d_m, diff)