Where is what in BoA?

Array dimensions

Name used here

Variable name

comment

nInt

data.ScanParam.NInt

Total number of integrations

nChan

data.BolometerArray.NChannels

The total number of channels

nUseChan

data.BolometerArray.NUsedChannels

Number of channels in use, i.e. size of data

nSub

data.ScanParam.NObs

Number of subscans in dataset

nSelectedSubs

len(data.ScanParam.SubscanNum)

Number of selected subscans

nMonPointsHe

len(data.ScanParam.TempHe3)

Number of monitor points for He3 temperature

Astronomical Object

Variable name

datatype

shape or length

typecode

comment

data.ScanParam.Object

string

Object name

data.ScanParam.Equinox

float

Default Equinox J2000

data.ScanParam.Basis

tuple

2

string

Astronomical Basis Frame should be ('ALON-SFL', 'ALAT-SFL')

data.ScanParam.Coord

tuple

2

float

object coordinates in the basis frame

data.ScanParam.RA0

float

Source position in equatorial system

data.ScanParam.Dec0

float

Source position in equatorial system

data.ScanParam.Frames

string

basis + user frames, e.g. "EQEQHO"

data.FileName

string

Bolometer characteristics

Variable name

datatype

shape or length

typecode

comment

data.BolometerArray.FeBe

int

Backend Frontend combination

data.BolometerArray.TransmitionCurve

array

Float32

2D (frequency vs transmition); Never set!

data.BolometerArray.EffectiveFrequency

float

Hz

data.BolometerArray.NChannels

int

The total number of channels

data.BolometerArray.NUsedChannels

int

Number of channels in use, i.e. size of data

data.BolometerArray.RefChannel

int

The reference Channel

data.BolometerArray.UsedChannels

array

(nUseChan)

Int

List of used Channels (to map to data array)

data.BolometerArray.CurrChanList

array

Int

Current list of used array

data.BolometerArray.Offsets

array

(2, nChan)

Float32

The so called RCP in arcsec

data.BolometerArray.FWHM

array

(2, nChan)

Float32

Corresponding FWHM of modelled gaussian (major-minor) (arcsec)

data.BolometerArray.Tilt

array

(nChan)

Float32

with tilt in degree

data.BolometerArray.Gain

array

(nChan)

Float32

Normalized gains

data.BolometerArray.JyPerCount

float

Jy / count conversion factor

data.BolometerArray.Flags

array

(nChan)

Int0

Channels Flags

data.BolometerArray.BEGain

float

Backend attenuation factor (new v. 1.61)

data.BolometerArray.FEGain

float

Frontend amplifier gain (actually the gain

data.BolometerArray.DCOff

array

(nChan)

Float32

DC offsets

data.BolometerArray.BeamSize

float

size of the beam in arcsec

data.BolometerArray.ChannelSep

array

(nChan, nChan)

Float

the separation between channels

data.BolometerArray.FeedType

list

nChan

array defining the type of the used feed

data.BolometerArray.FeedCode

dict

nChan

Dictionnary describing the feed type

General parameters about the SCAN type and geometry

Variable name

datatype

shape or length

typecode

comment

data.ScanParam.ScanNum

int

data.ScanParam.DateObs

string

data.ScanParam.ScanType

string

data.ScanParam.ScanMode

string

data.ScanParam.ScanDir

string

data.ScanParam.LineLen

float

data.ScanParam.LineYsp

float

data.ScanParam.AzVel

float

Arrays representing subscans

Variable name

datatype

shape or length

typecode

comment

data.ScanParam.NObs

int

Number of subscans in dataset

data.ScanParam.SubscanNum

list

nSelectedSubs

list of integers

data.ScanParam.SubscanIndex

array

(2, nSelectedSubs)

Int

Start/end indices of subscans

data.ScanParam.SubscanType

list

nSelectedSubs

List of strings, ('REF', 'ON', 'OFF'...)

data.ScanParam.SubscanTime

list

nSelectedSubs

Time and Telescope coordinates

Variable name

datatype

shape or length

typecode

comment

data.ScanParam.NInt

int

Total number of integrations

data.ScanParam.LST

array

(nInt)

Float32

data.ScanParam.MJD

array

(nInt)

Float

data.ScanParam.UT

array

(nInt)

Float32

data.ScanParam.Az

array

(nInt)

Float32

This is always absolute Az

data.ScanParam.El

array

(nInt)

Float32

This is always absolute El

data.ScanParam.LonOff

array

(nInt)

Float32

Offsets in User native frame

data.ScanParam.LatOff

array

(nInt)

Float32

data.ScanParam.BasLon

array

(nInt)

Float32

Absolute positions in Astron. basis frame

data.ScanParam.BasLat

array

(nInt)

Float32

data.ScanParam.Rot

array

(nInt)

Float32

data.ScanParam.LonPole

array

(nInt)

Float32

data.ScanParam.LatPole

array

(nInt)

Float32

data.ScanParam.NoddingState

array

(nInt)

Int0

data.ScanParam.AddLonWT

int

add wobbler throw to get right azimuth offset?

data.ScanParam.AddLatWT

int

add wobbler throw to get right elev. offset?

data.ScanParam.AzOff

array

(nInt)

Float32

Offsets in horizontal system

data.ScanParam.ElOff

array

(nInt)

Float32

Offsets in horizontal system

data.ScanParam.RAOff

array

(nInt)

Float32

Offsets in equatorial system

data.ScanParam.DecOff

array

(nInt)

Float32

Offsets in equatorial system

data.ScanParam.RA

array

(nInt)

Float32

Telescope positions in equatorial system (source + offsets)

data.ScanParam.Dec

array

(nInt)

Float32

Telescope positions in equatorial system (source + offsets)

data.ScanParam.ParAngle

array

(nInt)

Float32

rotation between HO and EQ

data.ScanParam.Mcrval1

array

(nInt)

Float32

Source coordinates in basis frame for a moving target

data.ScanParam.Mcrval2

array

(nInt)

Float32

Source coordinates in basis frame for a moving target

data.ScanParam.Flags

array

(nInt)

Int0

Flags by integration (independant of channels)

Bolometer Data

Variable name

datatype

shape or length

typecode

comment

data.Data

array

(nInt, nUseChan)

Float32

data.DataBackup

array

(nInt, nUseChan)

Float32

The backup copy of data

data.CorrelatedNoise

array

(nInt, nUseChan)

Float32

The associated noise array

data.DataFlags

array

(nInt, nUseChan)

Int0

array of smallest possible integers

data.DataWeights

array

(nInt, nUseChan)

Float32

data.CorMatrix

array

(nUseChan, nUseChan)

Float32

data.FFCF_CN

array

(nUseChan, nUseChan)

Float32

data.FFCF_Gain

array

(nUseChan, nUseChan)

Float32

data.Weight

array

(nUseChan, nUseChan)

Float32

data.ChanRms

array

(nUseChan)

Float32

data.ChanMean

array

(nUseChan)

Float32

data.ChanMed

array

(nUseChan)

Float32

data.ChanRms_s

array

(nUseChan, nSub)

Float32

data.ChanMean_s

array

(nUseChan, nSub)

Float32

data.ChanMed_s

array

(nUseChan, nSub)

Float32

Wobbler

Variable name

datatype

shape or length

typecode

comment

data.ScanParam.WobUsed

int

data.ScanParam.WobMode

string

data.ScanParam.WobThrow

float

data.ScanParam.WobCycle

float

data.ScanParam.WobblerSta

list

nSelectedSubs

string

data.ScanParam.WobblerPos

array

(nInt)

Float32

data.ScanParam.OnOffPairs

list

[int, int]

pairs of On-Off integration numbers

Pointing and Focus

Variable name

datatype

shape or length

typecode

comment

data.ScanParam.Nula

float

status at scan start

data.ScanParam.Nule

float

status at scan start

data.ScanParam.Colstart

float

status at scan start

data.ScanParam.FocX

array

(nInt)

Float32

data.ScanParam.FocY

array

(nInt)

Float32

data.ScanParam.FocZ

array

(nInt)

Float32

data.ScanParam.PhiX

array

(nInt)

Float32

data.ScanParam.PhiY

array

(nInt)

Float32

Additional data

Variable name

datatype

shape or length

typecode

comment

data.ScanParam.Refraction

list

nSelectedSubs

Refraction: one value per subscan; Never set!

data.ScanParam.TempHe3

list

nMonPointsHe

He3 temperature: values

data.ScanParam.TimeHe3

list

nMonPointsHe

He3 temperature: timestamps

boawiki: Documentation/Boa_Quick_User_Guide/Documentation/DataMembers (last edited 2009-12-17 15:40:27 by localhost)