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DATA PROCESSING AT
PICARD PAYLOAD DATA CENTRE (PPDC)
PPDC PRODUCTS
Abdanour IRBAH
SA / CNRS
Abdanour Irbah – 3/4 December 2008 – NICE
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SODISM DATA PROCESSING
I - PICARD DATA
II - ONBOARD DATA PROCESSING
III - DATA PROCESSING ORGANIGRAMS
IV - SODISM DATA PROCESSING
V - PPDC SODISM PRODUCTS
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I – PICARD DATA
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SODISM DATA
Solar images
- Full images of size 2048x2048 pixels recorded at wavelengths
215, 393, 535, 607 and 782 nm (2 images / orbit)
- Macropixel images of size 256x256 pixels at 535 nm with a cadence
of 1 image each 60 seconds (helioseismology)
Full Image
Macropixel Image
(size : 64x64 macropixels)
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SODISM DATA -IISolar limbs
Solar limbs
- 22 pixels wide limbs recorded at
535 nm with a cadence of 1 limb
each 120 s
(helioseismology studies)
- 40 pixels wide limbs recorded at
215, 393, 535, 607 and 782 nm
at a rate of 2 / orbit / wavelength
Samples of the whole SODISM image are extracted and present with limbs
These samples are used to follow instrument behavior on orbit
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SODISM DATA -III- Flat field and Dark Signal images (size 2048x2048 pixels) : 1/day
- Dark Signal limbs (40 pixels wide limbs) : 4/orbit
- Double stars images (2 windows image of size 768x768 pixels) : 1/month
Dark signal image
Flat Field image
Dark signal limb
Double stars image
Image size are all 2048x2048 pixels
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SOVAP & PREMOS DATA -IVSOVAP : Total Solar Irradiance (TSI) data obtained with
Radiometer : 9 data frames / 90 S leading to 1 TSI data / 3 MN
Bolometer : 1 data / 10 S
ADDITIONAL DATA : HK – Instrumental Status
PREMOS : Spectral and Total solar irradiance with respectively
Spectrophotometers :
High Rate Science : 10 data / 1
S
(UV,  = 210 NM )
Low Rate Science : 6 data frames / 1 MN (266, 535, 607, 782
NM
)
Radiometer : 2 Frames / 1 MN leading to 1 TSI data / 2 MN
ADDITIONAL DATA : HK – Calibration and Instrumental data
USEFUL DATA : SOLAR IMAGES FROM GROUND BASED OBSERVATORIES
(SODISM II, MISOLFA …), SATELLITE ORBIT DATA …
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II – ONBOARD DATA PROCESSING
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ONBOARD SODISM DATA PROCESSING -I-
2000
1500
1500
1000
500
pixels
2000
pixels
pixels
 LIMB AND DEFINED IMAGE SAMPLES EXTRACTION
1000
500
1000
1500
500
2000
500
1000 1500
pixels
2000
Whole SODISM image :
Main and auxiliary solar images
(False color)
500
1000 1500
pixels
2000
Mask
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500
1000 1500
pixels
2000
Extracted solar limb
with some image samples
(False color)
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ONBOARD SODISM DATA PROCESSING -II-
2000
2000
1500
1500
pixels
pixels
 LIMB TRANSFORMATION BEFORE COMPRESSION
1000
500
1000
500
500
1000
pixels
1500
Extracted solar limb (L(M))
2000
…
100
200
300
pixels
400
500
and its transformation (Os(M))
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ONBOARD SODISM DATA PROCESSING -III MACROPIXEL IMAGE

Whole Image I(M)
Macropixel Image IMP(M)
(64 x 64 pixels)
 LIMB , MACROPIXEL AND FULL IMAGE COMPRESSION
Two kinds of compression data :
- Non destructive for transformed limbs, macropixel and some images
- Destructive for full solar images but does not affect scientific objectives
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III - DATA PROCESSING ORGANIGRAMS
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DATA
PACKETS
•
Data processing
DATA PACKET PROCESSINGS
• UNZIPPING DATA
• RESTORING LIMBS
• EXTRACTING AND RESTORING SAMPLE IMAGES
PREMOS
N0 PRODUCTS
SODISM N0 PRODUCTS
ECLIPSE, ABSOPTION,
MODES : NOMINAL, DARK SIGNAL, STELLAR,
OPTICAL DISTORTION
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SOVAP
N0 PRODUCTS
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SODISM N0 PRODUCTS
(NOMINAL & DARK SIGNAL MODES)
•
DARK SIGNAL IMAGES
SCATERRED LIGHT SAMPLE PRODUCTS
DARK SIGNAL SAMPLE PRODUCTS
THRESHOLD
N0P PRODUCT
N0P_SCO
Data processing
Input parameters
IMAGE ANALYSIS :
MEAN & STANDARD DEVIATION
N0P PRODUCT
(N0P_CO,
BAD PIXEL MASK)
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N0P PRODUCT
N0P_SLP
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SODISM N0 PRODUCTS
CT-SA
N0 DARK SIGNAL LIMB
SODISM CALIBRATION DATA
(N1_CO , N1_FFL[])
FULL IMAGE
N1_RS_WL[]
MASK
•
LIMBS (22 and 40 pixels wide)
FULL SOLAR IMAGES
MACROPIXEL IMAGES
Data processing
Input parameters
CALIBRATION
LIMBS
N1_DL_WL[]
LIMBS
N1_HL_WL535
MACROPIXEL IMAGE
N1_HMP_WL535
AUXILIARY IMAGE EXTRACTION (EI)
AUXILIARY IMAGES
N1_SEI
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NOMINAL MODE : N1 PRODUCTS
( FULL & AUXILIARY IMAGES , LIMBS)
MASK
SOLSPEC DATA
N2A PREMOS
FULL IMAGES
LIMBS
AUXILIARY IMAGES
(N1_RS_WL[])
(N1_HL_WL535, N1_DL_WL[])
(N1_SEI)
MEAN SOLAR
DIAMETER
SCALE
FACTOR
INTENSITY
IMAGE
ORBITAL
FILE
N1P PRODUCTS
(N1P_RS_WL[])
ORBITAL
FILE
•
N2A PRODUCTS
(N2A_HL_RaySolMoy,
N2A_DL_RaySolMoy)
SES DATA
MASK
N1P PRODUCTS
(N1_FE)
DIAMETER : DAILY
MEAN VARIATION
Data processing
Input parameters
N2A PRODUCTS
(N2A_HL_VARIATION)
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NOMINAL MODE : N1 PRODUCTS
•
MACROPIXEL IMAGES , LIMBS)
LIMB WIDTH
SECTORS
Data processing
Input parameters
LIMB
MACROPIXEL IMAGE
MACROPIXEL IMAGE
N1_HL_WL535
N1_HMP_WL535
N1_HMP_WL535
PHOTOMETRY
MACROPIXEL
YLM
PHOTOMETRY
LIMBS
N1 PRODUCTS
N1 PRODUCTS
N1 PRODUCTS
N1_HMP_WL535_PHOT_<J>
<J> = (JJ-14) à JJ
N1_HL_WL535_PHOT_<J>
<J> = (JJ-14) à JJ
N1_HMP_WL535_PHOTLM_<J>
<J> = (JJ-2) à JJ
POWER
SPECTRUM
POWER
SPECTRUM
LMIN
LMAX
LNU
DIAGRAM
N1P PRODUCTS
N1P_HMP_WL535_DS_MPTOT_<JJ-14>_<JJ>
N1P PRODUCTS
N1P PRODUCTS
N1P_HL_WL535_DS_CTOT_<JJ-14>_<JJ>
N1P_HMP_WL535_LNU_MAV_<JJ-2>_<JJ>
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SODISM ALGORITHM NEEDS
Presented algorithms need software developments consisting in :
N0 -
 reconstruction of limbs from their transformed forms
N0P  quick analysis data
 calibration data
 scale factor estimation
N1 - N1P  analysis of helioseismology limbs and macropixel images
 calculation of intensity power spectrum and LNU diagrams
 SODISM image intensity : calculation and comparison
N2A
 mean solar diameter estimation
 daily mean solar diameter variation
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SOVAP ALGORITHM
•
SOVAP N0
PRODUCTS
CALIBRATION FILE
HKTM
HKTM
(SCU)
Processing Block
Parameter inputs
ORBITAL FILE
INSTRUMENTAL FILE
CALIBRATION
DATA SELECTION
DATA PROCESSING
N1 PRODUCT
N2A PRODUCT
DATA GENERATION :
• 10 S BOLOMETRIC DATA
• 3 MN TSI DATA
• DATA TRANSFORMATION
• CONVERTION BINARY – ASCII
FOR VISUALIZATION
N1P PRODUCT
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PREMOS ALGORITHM
PREMOS N0
PRODUCTS
CONVERSION TO
ELECTRICAL VALUES
SPI, TSI AND HK
SOVAP
N2 PRODUCT
N1 PRODUCTS
DATA ANALISYS
ORBITAL FILE
INSTRUMENTAL FILE
•
Processing Block
Parameter inputs
CONVERSION TO
PHYSICAL VALUES
SPI, TSI AND HK
COMPARISON TSI PREMOS - SOVAP
SPI( [  ] ) / SPI( 782 NM )
SPI( [  ] ) / TSI
N2A PRODUCT
N2A PRODUCTS
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IV – SODISM DATA PROCESSING
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N0 DATA PROCESSING
 RECONSTRUCTED LIMBS AFTER DECOMPRESSION
2000
2000
200
1800
400
1600
1000
1200
pixels
pixels
pixels
1400
800
1200
1000
1200
800
400
1600
600
1400
600
1800
800
1400
Os
600
Msq
1600
L
400
1800
200
1000
200
2000
100 200 300 400 500
pixels
500
1000
pixels
1500
2000
500
1000
pixels
1500
2000
 DECOMPRESSION of FULL SOLAR IMAGES
No further data processing's are needed for creating appropriate products
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N0P DATA PROCESSING -I QUICK LOOK ON DAILY DARK SIGNAL IMAGES
 Mean and standard deviation of dark signal image CO
 Number of “bad” pixels (Nb)
CO  mCO ,  CO , Nb  Mask (M ) where Nb  CO( M )  threshold
CCD BAD PIXEL NUMBER
100
Bad pixel number
80
60
40
20
0
0
200
400
600
Time (DAY)
800
1000
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1200
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N0P DATA PROCESSING -II QUICK LOOK ON DARK SIGNAL AND SCATTERED LIGHT SAMPLES
MEAN OF DARK SIGNAL MARKER IMAGES
1.5
1
mean (ADU)
Mean and standard
deviation for each
sample of
- dark signal (SCO)
- scattered light (SLP)
0.5
0
0
500
1000
1500
Time (mn)
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N1 DATA PROCESSING -I SOLAR LIMB AND FULL IMAGE CALIBRATION
Lc( M )   ( ) G ( , M ) [ L( M )  N ( M )] where M  M(x,y)
Ic ( M )   ( ) G ( , M ) [ I ( M )  N ( M )] where M  M(x,y)
L(M) and I(M) are respective ly the solar limb and image
Lc(M) and Lc(M) are the calibrated ones
 ( ) is the calibratio n factor at wavelength  to transform ADU in mW/m 2 / nm
G( , M ) is the CCD gain matrix obtained from flat field images :  G(λ, M )  1
N ( M ) is the CCD dark signal. For limbs : N ( M )  CO( M ) Msq ( M ) or N ( M )  LCO( M )
 SOLAR MACROPIXEL IMAGE CALIBRATION
IcMP ( M )   ( ) GMP ( , M ) [ I MP ( M )  N MP ( M )] where M  M(x,y)
I MP(M) is the macropixel image and IcMP(M) the calibrated one.
The gain matrix GMP ( , M ) and dark signal image N MP ( M ) are calculated in
the same way as macropixel image onboard using G ( , M ) and N ( M ) images
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N1 DATA PROCESSING -II SCALE FACTOR
The Scale Factor SF is obtained by
2000
computing the distance between:
SF
EI
1800
1600
- the maximum of the intercorrelation
1400
function of EI and HI images and
function of the image EI.
pixels
- the maximum of the autocorrelation
1200
1000
800
HI
600
400
Simulation s show that SF is obtained
with an accuracyof a few mas
200
500
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1000
pixels
1500
2000
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N1P DATA PROCESSING -I IMAGE ANALYSIS : COMPARISON WITH SOLSPEC and PREMOS DATA
SIC  
where   215, 535, 607 and 782 nm
SPI [ ]
SIC  
Q2 [ ] 
where   215, 393, 535, 607 and 782 nm
SOLSPEC[ ]
SIC   is the mean pixel intensity of SODISM image recorded at wavelen gth 
Q1[ ] 
SPI [ ] are spectral irradiance data from the PREMOS experiment (N2A products)
SOLSPEC[ ] are solar spectrum data incomming from the SOLSPEC experiment
 IMAGE ANALYSIS : CENTER AND PHOTOCENTER OF SOLAR IMAGES
Geometrical image center and photocenter of each full solar image are
calculated considering a circle fit through some image inflexion points and pixel
image intensities greater than a given threshold.
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N1P DATA PROCESSING -IIHELIOSEISMOLOGY
MONITORING OF LIMB INTENSITY
MONITORING OF MACROPIXEL PHOTOMETRY
ℓ- DIAGRAM DIAGNOSTIC
They will be presented by Catherine RENAUD
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N2A DATA PROCESSING -I DAILY MEAN SOLAR RADIUS
 LIMB FILTERING
Solar radius definition : inflexion point position of the limb darkening function
Second derivative calculatio ns need to reduce noise present in the limb image :
 Lc( M ) * F1 ( M )
LcF ( M )  
T Lc( M ), F2 ( M ) 
(1)
( 2)
where M  M(x,y)
* and F1, 2(M) denote the convolutio n opération and the spatial response filter
Lc and LcF are respectively limbs before and after filtering
(1) will be used in case of low noise in limb images while (2) in the others cases.
T(.) denotes non linear filtering asking for use of special processing methods
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N2A DATA PROCESSING -II DAILY MEAN SOLAR RADIUS
 MEAN SOLAR RADIUS
The diameter is obtained from 2 inflexion point positions of radial cuts of the
filtered limb image LcF (M )


1
mr   re1  re 2   rp1  rp 2
2
2000
rp1
1800
1600
1400
1200
pixels
Polar and Equatorial radial
cuts of a limb image give
access to 4 inflexions point
position values
They are used to estimate the
mean solar diameter of the
limb image mr
1000
re1
re2
Equatorial cut
(Xp,Yp)
800
600
400

rp2
200
500
1000
pixels
1500
2000
Polar cut
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N2A DATA PROCESSING -III DAILY MEAN SOLAR RADIUS
Daily m ean solar radius dmr is deduced from mr calculated from limbs of 1 day :
dmr  mr(t )
T 1 day
where
T
denotes a mean average over the period T
dmr has apparent variations due to seasonal Earth motion.
DAILY MEAN SOLAR DIAMETER
940
dmr (arcseconds)
930
920
910
900
890
880
870
860
0
50
100
150
200
250
Time (DAY)
300
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350
400
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N2A DATA PROCESSING -IV DAILY MEAN SOLAR RADIUS
 NOISE AFFECTING MEAN SOLAR RADIUS
The noise affecting dmr is estimated by :
σ dmr 
mr(t )  dmr 2
T
Daily mean position and standard deviation for infle xion point are :
drP  rP (t )
T 1 day
and  P 
rP (t )  drP 2
T
where rP  rP k or re k , k  1,2
 SOLAR RADIUS VARIATION
dmr variations from one day to other is :
Vdmr  mr (t )
T  JJ
- mr (t )
T  JJ 1
where JJ corresponds to a given day
Vdmr will be compared to expected theoretica l variations (IMCCE data)
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IV – PPDC SODISM PRODUCTS
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PRODUCTS : FILENAME
Filename :
PIC_<INS>_<LEVEL>[_<MODE>]_<TYPE>[_<ID>]_<DATE>_<VER>.<EXT>
Example
: PIC_SOD_N0_MTE_HL_WL535_ 20071121_1400_v01.fits
Mission : PICARD
Instrument : SODISM
Level processing : N0
Observation mode : MNM, DCO, MAB, MNT, MDO, MES, MTE
Data type : HL (Narrow limb)
Picard identifier : WL535 (535nm wavelength)
Date of acquisition (YYYYMMDD_HHMM) : 20071121_1400
File release : v01
Extension : fits (or fits.gz)
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PRODUCTS : FORMAT
File format : FITS (Flexible Image Transport System) or TXT (SOVAP, N0 PREMOS)
A FITS file is composed with 1 or several HDU (Header + Data) units.
Kind of PPDC Data
 Simple images (Header + data image)
– Full CCD images
: 2048x2048 pixels (or 2060x2053 with overscans)
– Solar limbs
: 2048x2048 pixels
– Dark signal windows : 256x256 pixels
– Macropixels Images : 256x256 pixels
 Multi-FITS images
– Samples images extracted from limbs are in HDU’s
 Data tables
– Values obtained from quick looks or data analysis are in tables
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PRODUCTS : FITS HEADER
General information and used abbreviations
COMMENT ****************************************************
COMMENT --- General Information --FILENAME= 'PIC_SOD_N1_HL_WL535_20091223_1431_v01.fits' / File name
AUTHOR = 'LATMOS '
/ Responsible institute of Processing
REVISION= 'v01
'
/ File revision number
DATE
= '2008-11-27T16:33:49' / file creation date (YYYY-MM-DDThh:mm:ss UT)
ORIGIN = 'CMS-P
'
/ Origin of the data file
INSTRUME= 'PICARD '
/ Instrument
TELESCOP= 'SODISM '
/ Telescope
DATE-OBS= '2009-12-23T14:31:00.000' / Date of start image exposure
COMMENT ****************************************************
COMMENT --- Used Abbreviations --COMMENT
nc = non-calibrated
COMMENT
AU = Astronomical Units
COMMENT
px = pixels
COMMENT
[0-index px] = Pixel index origin is 0
COMMENT
[1-index px] = Pixel index origin is 1
COMMENT
frac px = Fractionnal pixel index
COMMENT
Deg = degrees
COMMENT
Std = Standard deviation
COMMENT
Max = Maximum
COMMENT ****************************************************
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PRODUCTS : FITS HEADER
Housekeeping
COMMENT --- Mechanism Status
MES_TPS = 'GOOD
'
TPSOUVV1=
814.6693
TPSFERV1=
814.6693
…
NPRAZRF2=
-124
COMMENT
COMMENT --- Thermal Servitude
MODECCD = 'NOMINAL '
TEMP01 =
68.77077
TEMP02 =
67.33517
…
COMMENT --- CCD Servitude
T_VOD
=
24.6509
…
COMMENT
COMMENT --- Pointing Servitude
POINTAGE= 'ON
'
PIEZO_WR= 'NOMINAL '
TPS_POSE=
64352
P3
=
1.344706E-05
P1X
=
6800.241
…
COMMENT
/ Measure quality of the shutter blade times
/ [s] Opening time of the 1st shutter blade
/ [s] Closing time of the 1st shutter blade
/ Wheel 2 : difference of steps from the origin
/ Thermal card mode
/ [Deg] Sensor 1 : Primary mirror M1
/ [Deg] Sensor 2 : Cupro plate / radiative M1
/ [V] CCD VOD voltage
/
/
/
/
/
EPS card mode
Piezos working range during exposure
[ms] Piezos working time during exposure
[A] Mean solar flux on the 4 photodiodes
[arcsec2] Std of X-axis correction signal
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PRODUCTS : FITS HEADER
Image parameters
COMMENT --- Image Parameters
OBS_MODE= 'MNM
'
/ Nominal mode
OBS_TYPE= 'HL
'
/ Narrow limb
LEVEL
= 'N1
'
/ Processing level
LAMBDA =
535.75 / [nm] Wavelenght (0 if unknown)
CADENCE =
120 / [s] Sampling time
COMPRESS= 'PLLC
'
/ Lossless data compression
…
EXPOSURE=
1.01 / [s] Exposure time
…
LOST_PQT=
0 / Incomplete image indicator (missing packets)
…
E_LIMBE =
22 / [px] Thickness of the limb mask
IMSQ
=
25 / Number of the limb mask
IM_SCALE=
1.06 / [arcsec] Pixel size
SCALE_F =
2046.37 / [px] Geometrical distance reference
NOIMAGE =
F / Absence of the Sun on the CCD
NOFULL =
F / Truncated solar image on the CCD
XCENTER =
940.5128 / [frac px] Center of the Sun image abscissa
YCENTER =
986.4594 / [frac px] Center of the Sun image ordinate
R_SUN
=
923.8931 / [px] Apparent radius of the Sun image
NEGPXNBR=
17959 / Number of px with negative intensities
…
COMMENT
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PRODUCTS : FITS HEADER
Auxiliary image coordinates and calibration information :
COMMENT ****************************************************
COMMENT --- Coordinates of auxiliary images
COMMENT
EI1 = { ( 175,1681); ( 246,1752); ( 262,1736); ( 191,1665) }
COMMENT
EI2 = { (1636,1753); (1707,1682); (1691,1666); (1620,1737) }
COMMENT
EI3 = { (1620, 236); (1691, 307); (1707, 291); (1636, 220) }
COMMENT
EI4 = { ( 190, 307); ( 261, 236); ( 245, 220); ( 174, 291) }
COMMENT
COMMENT --- Calibration information
REV_IN = 'v01
'
/ Product input version
FILE_CO = 'PIC_SOD_N1_CO_20080124_0000_v01.fits'
FILE_LCO= 'PIC_SOD_N0_LCO_20091223_1705_v01.fits'
FILE_FFL= 'PIC_SOD_N1_FFL_WL535_20080124_0000_v01.fits'
XMLFILE1= 'CONFIGURATION_20081002.xml' / File used to calibrate image
XMLFILE2= 'CONFIGURATION_20081002.xml' / File used to calibrate HKTM
RPLCO_CO=
1.976285 / Mean ratio between LCO and CO pixel intensities
DARK_LCO= 'NOMINAL '
/ Limb dark signal level
USE_LCO =
F / Indicator of dark current file
RPSCO_CO=
1.980945 / Mean ratio between SCO and CO pixel intensities
DARK_SCO= 'NOMINAL '
/ Dark signal level
WLCALFIL= 'WL535HL '
/ Wavelength filter used for Calibration
CALFAC =
0.7264 / Calibration coefficient : ADU to mW/m2/nm
D_LAMBDA=
0.5 / [nm] Wavelength filter bandwidth
COMMENT
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PRODUCTS : FITS HEADER
Satellite and Sun data - History
COMMENT --- Satellite position
OBS_LON =
269.4971 / [Deg] Satellite longitude (positive Eastwards)
OBS_LAT =
3.958945 / [Deg] Satellite latitude (positive Northwards)
OBS_ALT =
7108.262 / [km] Satellite altitude from Earth center
DSUN
=
0.9836353 / [AU] Satellite-Sun Distance
LOS_ALT =
725.8525 / [km] Line of sight altitude
EAP_IND =
1 / Earth's atmostphere position index
COMMENT
COMMENT --- Solar data
EARTH_D =
0.9836336 / [AU] Earth-Sun Distance
EARTH_CR=
2092 / Heliographic rotation number for EARTH_L0
EARTH_B0=
-2.01064 / [Deg] Heliographic Latitude of Earth center
EARTH_L0=
143.6399 / [Deg] Heliographic Longitude of Earth center
OBS_CR =
2092 / Carrington rotation number for OBS_L0
OBS_B0 =
-2.01064 / [Deg] Heliographic Latitude of the observer
OBS_L0 =
143.6399 / [Deg] Heliographic Longitude of the observer
SOLAR_P =
6.15484 / [Deg] Position angle of the solar north pole
SEMIDIAM=
0.00473 / [rad] Semi-diameter in radians
P_ANGLE =
0.63042 / [Deg] Location of the solar north pole on CCD
COMMENT
COMMENT --- Quality index
INDQ
=
27 / Product quality index (lower values means good)
CODE_HK = '11110111111111111111111001111100' / Quality index binary code
COMMENT
HISTORY Parametre_Entete_N1.exe (v0.9) -xml TM.xml -out PIC_SOD_N0 -v 1 -in TM_H
HISTORY L.bin
Abdanour Irbah – 3/4 December 2008 – NICE
40
Example : Narrow Limb 1/6
SIMPLE
BITPIX
NAXIS
NAXIS1
NAXIS2
EXTEND
COMMENT
COMMENT
=
=
=
=
=
=
T / file does conform to FITS standard
-32 / number of bits per data pixel
2 / number of data axes
2048 / length of data axis 1
2048 / length of data axis 2
T / FITS dataset may contain extensions
FITS (Flexible Image Transport System) format is defined in 'Astronomy
and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
BUNIT
= 'mW/m2/nm'
/ Physical units
COMMENT Physical pixel values are given for 1 second
COMMENT
COMMENT --- General Information
FILENAME= 'PIC_SOD_N1_HL_WL535_20091223_1431_v01.fits' / File name
AUTHOR = 'LATMOS '
/ Responsible institute of Processing
REVISION= 'v01
'
/ File revision number
DATE
= '2008-11-27T16:33:49' / file creation date (YYYY-MM-DDThh:mm:ss UT)
ORIGIN = 'CMS-P
'
/ Origin of the data file
INSTRUME= 'PICARD '
/ Instrument
TELESCOP= 'SODISM '
/ Telescope
DATE-OBS= '2009-12-23T14:31:00.000' / Date of start image exposure
COMMENT ****************************************************
COMMENT --- Used Abbreviations --COMMENT
nc = non-calibrated
COMMENT
AU = Astronomical Units
COMMENT
px = pixels
COMMENT
[0-index px] = Pixel index origin is 0
COMMENT
[1-index px] = Pixel index origin is 1
COMMENT
frac px = Fractionnal pixel index
COMMENT
Deg = degrees
COMMENT
Std = Standard deviation
COMMENT
Max = Maximum
COMMENT ****************************************************
COMMENT
Abdanour Irbah – 3/4 December 2008 – NICE
41
Narrow Limb 2/6
COMMENT --- Mechanism Status
MES_TPS = 'GOOD
'
TPSOUVV1=
814.6693
TPSFERV1=
814.6693
TPSOUVV2=
814.6693
TPSFERV2=
814.6693
IND_RBD =
1
TARBD1V1=
814.6693
TDRBD1V1=
814.6693
TARBD2V1=
814.6693
TDRBD2V1=
814.6693
TARBD1V2=
814.6693
TDRBD1V2=
814.6693
TARBD2V2=
814.6693
TDRBD2V2=
814.6693
NPRAZRF1=
-124
NPRAZRF2=
-124
COMMENT
COMMENT --- Thermal Servitude
MODECCD = 'NOMINAL '
TEMP01 =
68.77077
TEMP02 =
67.33517
TEMP03 =
68.77077
TEMP04 =
68.77077
…
…
TEMP46 =
68.77077
TEMP47 =
68.77077
VREF15V =
14.72415
VREFM15V=
-14.81361
VREF20C =
67.33517
VREFM40C=
67.33517
COMMENT
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
Measure quality of the shutter blade times
[s] Opening time of the 1st shutter blade
[s] Closing time of the 1st shutter blade
[s] Opening time of the 2nd shutter blade
[s] Closing time of the 2nd shutter blade
Indicator of rebound (=1)
[s] Blade 1 : 1st rebound appearance time
[s] Blade 1 : 1st rebound disappearance time
[s] Blade 1 : 2nd rebound appearance time
[s] Blade 1 : 2nd rebound disappearance time
[s] Blade 2 : 1st rebound appearance time
[s] Blade 2 : 1st rebound disappearance time
[s] Blade 2 : 2nd rebound appearance time
[s] Blade 2 : 2nd rebound disappearance time
Wheel 1 : difference of steps from the origin
Wheel 2 : difference of steps from the origin
/
/
/
/
/
Thermal card
[Deg] Sensor
[Deg] Sensor
[Deg] Sensor
[Deg] Sensor
/
/
/
/
/
/
[Deg] Sensor 46 : Thermal electr. control (ETH)
[Deg] Sensor 47 : Thermal electr. control (ETH)
[V] Value of the reference voltage +15v
[V] Value of the reference voltage -15v
[Deg] 20 deg reference temperature
[Deg] -40 deg reference temperature
mode
1 : Primary mirror M1
2 : Cupro plate / radiative M1
3 : Mirror M2 / Face +Z
4 : Mirror M2 / Face -Z
Abdanour Irbah – 3/4 December 2008 – NICE
42
Narrow Limb 3/6
COMMENT --- CCD Servitude
T_VOD
=
24.6509
T_VOGL =
6.361524
T_TVGM =
31.80762
T_TVDM =
31.80762
OFFSET_D=
64352
OFFSET_G=
64352
BRUIT_D =
64352
BRUIT_G =
64352
COMMENT
COMMENT --- Pointing Servitude
POINTAGE= 'ON
'
PIEZO_WR= 'NOMINAL '
TPS_POSE=
64352
P3
=
1.344706E-05
P1X
=
6800.241
P1Y
=
6800.241
P2X
=
13.39412
P2Y
=
13.39412
P5X
=
1805.311
P5Y
=
-1924.116
P4
=
3.984314E-05
COMMENT
COMMENT --- Image Parameters
OBS_MODE= 'MNM
'
OBS_TYPE= 'HL
'
LEVEL
= 'N1
'
LAMBDA =
535.75
CADENCE =
120
COMPRESS= 'PLLC
'
NMSB
=
10
/
/
/
/
/
/
/
/
[V] CCD VOD voltage
[V] CCD VOGL voltage
[V] Mean value of the left video signal
[V] Mean value of the right video signal
[ADU] Mean value of the right channel offset
[ADU] Mean value of the left channel offset
[ADU] Std of right channel offset
[ADU] Std of left channel offset
/
/
/
/
/
/
/
/
/
/
/
EPS card mode
Piezos working range during exposure
[ms] Piezos working time during exposure
[A] Mean solar flux on the 4 photodiodes
[arcsec2] Std of X-axis correction signal
[arcsec2] Std of Y-axis correction signal
[arcsec] Max amplitude of X correction signal
[arcsec] Max amplitude of Y correction signal
[arcsec] X mean position mirror during exposure
[arcsec] Y mean position mirror during exposure
[m] Mean displacement position of M1 mirror
/
/
/
/
/
/
/
Nominal mode
Narrow limb
Processing level
[nm] Wavelenght (0 if unknown)
[s] Sampling time
Lossless data compression
Parameter used for PLLC compression
Abdanour Irbah – 3/4 December 2008 – NICE
43
Narrow Limb 4/6
IMG_DIV =
T
CONS_EXP=
1.
EXPOSURE=
1.01
CONS_PF1=
0
CONS_PF2=
0
LOST_PQT=
0
OVERSCAN=
F
ICOL_C =
941
ILIG_C =
987
ICOL_LP =
1015
ILIG_LP =
1015
RI_LIMBE=
913
E_LIMBE =
22
IMSQ
=
25
IM_SCALE=
1.06
SCALE_F =
2046.37
NOIMAGE =
F
NOFULL =
F
XCENTER =
940.5128
YCENTER =
986.4594
R_SUN
=
923.8931
NEGPXNBR=
17959
COMMENT NBCOL_CCD
= 2048
COMMENT NBLIG_CCD
= 2048
COMMENT NBCOL_TEMOIN_LP = 20
COMMENT NBLIG_TEMOIN_LP = 100
COMMENT NBCOL_TEMOIN_CO = 20
COMMENT NBLIG_TEMOIN_CO = 20
NIM_EI =
4
COMMENT
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
Original data coded with 15 (T) or 16 (F) bits
[s] Exposure time command
[s] Exposure time
Step number command for filter wheel 1
Step number command for filter wheel 2
Incomplete image indicator (missing packets)
Indicator of overscans in image
[1-index px] Mask center abscissa
[1-index px] Mask center ordinate
[1-index px] Light scattered sample abscissa
[1-index px] Light scattered sample ordinate
[px] Internal radius of the limb mask
[px] Thickness of the limb mask
Number of the limb mask
[arcsec] Pixel size
[px] Geometrical distance reference
Absence of the Sun on the CCD
Truncated solar image on the CCD
[frac px] Center of the Sun image abscissa
[frac px] Center of the Sun image ordinate
[px] Apparent radius of the Sun image
Number of px with negative intensities
[px] CCD image width (2060 with overscan)
[px] CCD image height (2053 with overscan)
[px] Light scattered sample width
[px] Light scattered sample height
[px] Dark signal sample width
[px] Dark signal sample height
Number of auxiliary images
Abdanour Irbah – 3/4 December 2008 – NICE
44
Narrow Limb 5/6
COMMENT --- Coordinates of auxiliary images
COMMENT
EI1 = { ( 175,1681); ( 246,1752); ( 262,1736); ( 191,1665) }
COMMENT
EI2 = { (1636,1753); (1707,1682); (1691,1666); (1620,1737) }
COMMENT
EI3 = { (1620, 236); (1691, 307); (1707, 291); (1636, 220) }
COMMENT
EI4 = { ( 190, 307); ( 261, 236); ( 245, 220); ( 174, 291) }
COMMENT
COMMENT --- Calibration information
REV_IN = 'v01
'
/ Product input version
FILE_CO = 'PIC_SOD_N1_CO_20080124_0000_v01.fits'
FILE_LCO= 'PIC_SOD_N0_LCO_20091223_1705_v01.fits'
FILE_FFL= 'PIC_SOD_N1_FFL_WL535_20080124_0000_v01.fits'
XMLFILE1= 'CONFIGURATION_20081002.xml' / File used to calibrate image
XMLFILE2= 'CONFIGURATION_20081002.xml' / File used to calibrate HKTM
RPLCO_CO=
1.976285 / Mean ratio between LCO and CO pixel intensities
DARK_LCO= 'NOMINAL '
/ Limb dark signal level
USE_LCO =
F / Indicator of dark current file
RPSCO_CO=
1.980945 / Mean ratio between SCO and CO pixel intensities
DARK_SCO= 'NOMINAL '
/ Dark signal level
WLCALFIL= 'WL535HL '
/ Wavelength filter used for Calibration
CALFAC =
0.7264 / Calibration coefficient : ADU to mW/m2/nm
D_LAMBDA=
0.5 / [nm] Wavelength filter bandwidth
COMMENT
COMMENT --- Satellite position
OBS_LON =
269.4971 / [Deg] Satellite longitude (positive Eastwards)
OBS_LAT =
3.958945 / [Deg] Satellite latitude (positive Northwards)
OBS_ALT =
7108.262 / [km] Satellite altitude from Earth center
DSUN
=
0.9836353 / [AU] Satellite-Sun Distance
LOS_ALT =
725.8525 / [km] Line of sight altitude
EAP_IND =
1 / Earth's atmostphere position index
COMMENT
Abdanour Irbah – 3/4 December 2008 – NICE
45
Narrow Limb 6/6
COMMENT --- Solar data
EARTH_D =
0.9836336 / [AU] Earth-Sun Distance
EARTH_CR=
2092 / Heliographic rotation number for EARTH_L0
EARTH_B0=
-2.01064 / [Deg] Heliographic Latitude of Earth center
EARTH_L0=
143.6399 / [Deg] Heliographic Longitude of Earth center
OBS_CR =
2092 / Carrington rotation number for OBS_L0
OBS_B0 =
-2.01064 / [Deg] Heliographic Latitude of the observer
OBS_L0 =
143.6399 / [Deg] Heliographic Longitude of the observer
SOLAR_P =
6.15484 / [Deg] Position angle of the solar north pole
SEMIDIAM=
0.00473 / [rad] Semi-diameter in radians
P_ANGLE =
-0.13042 / [Deg] Location of the solar north pole on CCD
COMMENT
COMMENT --- Quality index
INDQ
=
27 / Product quality index (lower values means good)
CODE_HK = '11110111111111111111111001111100' / Quality index binary code
COMMENT
HISTORY Parametre_Entete_N0.exe (v0.9) -xml TM.xml -out PIC_SOD_N0 -v 1 -in TM_H
HISTORY L.bin
HISTORY
HISTORY Etalonnage_Limbe.exe (v1.0) -in PIC_SOD_N0_HL_WL535_20091223_1431_v01.fi
HISTORY ts -ffl PIC_SOD_N1_FFL_WL535_20080124_0000_v01.fits -co PIC_SOD_N1_CO_20
HISTORY 080124_0000_v01.fits -lco PIC_SOD_N0_LCO_20091223_1705_v01.fits -msq msq
HISTORY _limbe_20091223_HL00025.fits.gz -bad PIC_SOD_MSQ_CO_20091222_1800_v01.fi
HISTORY ts.gz -imcce IMCCE_EARTH_20091223.txt -orbite DETERMINATED_ORBIT_PIC_200
HISTORY 91223_20091223_J2000 -xml CONFIGURATION_20081002.xml -out PIC_SOD_N1
HISTORY
HISTORY Parametre_Entete_N1.exe (v1.0) -in PIC_SOD_N1_HL_WL535_20091223_1431_TMP
HISTORY .fits -imcce IMCCE_SAT_2009_12_23.txt -att PIC_ORBITAL_FILE_20091223.txt
HISTORY -fe PIC_SOD_N1_FE_20091223_v01.fits -tf BDS_PICARD.tcl -xml CONFIGURATI
HISTORY ON_20081002.xml -out PIC_SOD_N1 -v 1
END
Abdanour Irbah – 3/4 December 2008 – NICE
46