@ -1,15 +1,18 @@
#!/usr/bin/python3
#!/opt/local/bin/python3
####!/usr/bin/python3
"""
Python port of Bob Campbell ' s IDL script to make nominal tsys tables.
It takes the nominal SEFD values from the sefd_values . txt table and generates an ANTAB file using
these values . Gains will be set to 1 / SEFD , and all Tsys to 1.0 .
Note that it will overwrite any existing ANTAB file in the current path .
Version : 4.0
Version : 4.2
Date : June 2018
Author : Benito Marcote ( marcote @jive . eu ) & Jay Blanchard ( blanchard @jive . eu )
version 4.2 changes
- Explicit error if antenna or freq . is not known
version 4.1 changes
- Minor issues ( ordering input arguments , version )
version 4.0 changes
@ -29,7 +32,7 @@ from math import floor
from collections import defaultdict
__version__ = 4.2
help_str = """ Writes a nominal SEFD ANTAB file. Gain will be set to 1/SEFD, and all Tsys to 1.0.
It will overwrite any previous antab file in the current path .
antabfs_nominal . py uses the SEFD information from sefd_values . txt to compute the nominal values .
@ -40,7 +43,7 @@ parser = argparse.ArgumentParser(description=help_str, prog='antabfs_nominal.py'
parser . add_argument ( ' antenna ' , type = str , default = None , help = ' Antenna name (two-letters syntax, except for Jb1 Jb2 Ro7 Ro3) ' )
parser . add_argument ( ' experiment ' , type = str , default = None , help = ' Experiment name ' )
parser . add_argument ( ' start ' , type = str , default = None , help = ' Start time (DOY/HH:MM, YYYY/DOY/HH:MM or YYYY/MM/DD/HH:MM) ' )
parser . add_argument ( ' -v ' , ' --version ' , action = ' version ' , version = ' %(prog)s 4.1 ' )
parser . add_argument ( ' -v ' , ' --version ' , action = ' version ' , version = ' %(prog)s {} ' . format ( __version__ ) )
parser . add_argument ( ' -b ' , ' --band ' , type = str , default = None , help = ' Observed band (in cm). REQUIRED unless SEFD provided ' )
parser . add_argument ( ' -d ' , ' --duration ' , type = float , default = 24 , help = ' Duration of the experiment (in hours). Default: 24 h ' )
parser . add_argument ( ' -fr ' , ' --freqrange ' , type = str , default = ' 100,100000 ' , help = ' Frequency range where the ANTAB is applicable (lower and upper limit, in MHz). Default 100,100000 (please, do not use spaces between the numbers). ' )
@ -52,14 +55,14 @@ args = parser.parse_args()
i_already_warn_about_seconds = False
# def read_sefd_table(tablename='sefd_values.txt'):#' /jop83_0/pipe/in/marcote/scripts/sefd_values.txt'):
def read_sefd_table ( tablename = ' /jop83_0/pipe/in/marcote/scripts/ sefd_values.txt' ) :
# def read_sefd_table(tablename='/jop83_0/pipe/in/marcote/scripts/sefd_values.txt'):
def read_sefd_table ( tablename = ' sefd_values.txt ' ) :
sefd_table = open ( tablename , ' r ' )
titles = sefd_table . readline ( ) . strip ( ) . split ( ' | ' )
titles = [ t . strip ( ) for t in titles ]
sefd_dict = defaultdict ( dict )
for an_ant in sefd_table . readlines ( ) :
values = [ t . strip ( ) for t in an_ant . strip ( ) . split ( ' | ' ) ]
values = [ t . strip ( ) for t in an_ant . strip ( ) . split ( ' | ' ) ]
for i in range ( 1 , len ( values ) ) :
if values [ i ] != ' ' :
sefd_dict [ values [ 0 ] . lower ( ) ] [ titles [ i ] ] = float ( values [ i ] )
@ -68,15 +71,16 @@ def read_sefd_table(tablename='/jop83_0/pipe/in/marcote/scripts/sefd_values.txt'
def read_sefd_values ( table , antenna , band ) :
try :
return table [ antenna ] [ band ]
except KeyError :
if antenna not in table :
print ( ' ERROR: {} is not available. \n ' . format ( antenna ) )
print ( ' The available antennas are: ' , ' ' . join ( table . keys ( ) ) )
else :
print ( ' ERROR: antenna {} does not have SEFD information for {} -cm observations ' . format ( antenna , band ) )
if antenna not in table :
print ( ' ERROR: {} is not available. \n ' . format ( antenna ) )
print ( ' The available antennas are: {} ' . format ( ' ' . join ( table . keys ( ) ) ) )
sys . exit ( 1 )
elif band not in table [ antenna ] :
print ( ' ERROR: antenna {} does not have SEFD information for {} -cm observations ' . format ( antenna , band ) )
print ( ' {} only has SEFD information for {} cm ' . format ( antenna , ' , ' . join ( table [ antenna ] . keys ( ) ) ) )
sys . exit ( 1 )
else :
return table [ antenna ] [ band ]
def index_header ( ) :
@ -96,8 +100,9 @@ def get_header(antenna, gain, freqrange):
The gain ( in 1 / Jy ) for this antenna
"""
generic_header = ''' !
! Nominal calibration data for { ant } by tsys_nominal . py .
! tsys_nominal . py version 2.0 , 2016 August 3 , BM & JB
! Nominal calibration data for { ant } created by
! antabfs_nominal . py ( version { version } )
! Script at JIVE done by Benito Marcote & Jay Blanchard
!
GAIN { ant } ELEV DPFU = { gain } , { gain } POLY = 1.0 FREQ = { freqrange }
/
@ -105,7 +110,7 @@ TSYS {ant} FT=1.0 TIMEOFF=0
INDEX = { indexes }
/ '''
return generic_header . format ( ant = antenna [ : 2 ] . upper ( ) , gain = gain , indexes = index_header ( ) ,
freqrange = ' , ' . join ( [ str ( i ) for i in freqrange ] ) )
version = __version__ , freqrange = ' , ' . join ( [ str ( i ) for i in freqrange ] ) )
def hm2hhmmss ( hhmm ) :
@ -123,6 +128,7 @@ def hm2hhmmss(hhmm):
second = int ( ( minute - floor ( minute ) ) * 60 )
return int ( hour ) , int ( floor ( minute ) ) , second
def date2datetime ( date ) :
""" Convert the given date to DOY, HH, MM.
Inputs :
@ -140,12 +146,11 @@ def date2datetime(date):
year , month , day , hhmm = date . split ( ' / ' )
return dt . datetime ( int ( year ) , int ( month ) , int ( day ) , * hm2hhmmss ( hhmm ) )
else :
print ( ' Error : date must have the following format: DOY/HH:MM, YYYY/DOY/HH:MM or YYYY/MM/DD:HH:MM ' )
print ( ' ERROR : date must have the following format: DOY/HH:MM, YYYY/DOY/HH:MM or YYYY/MM/DD:HH:MM ' )
raise SyntaxError
def date2string ( datetime ) :
""" Return a string with the date in the correct ANTAB format
"""
@ -196,7 +201,6 @@ if not (args.freqrange[0] < 30*1000/float(args.band) < args.freqrange[1]):
sefd_info = read_sefd_table ( )
start_time = date2datetime ( args . start )
end_time = start_time + dt . timedelta ( args . duration / 24. )
a_time = date2datetime ( args . start )
Benito Marcote
4 years ago