Complete list of EIS FITS keywords
Table 1. Main header keywords
|
Keyword |
Format |
Description |
Example |
Unit |
Origin |
|
XTENSION |
String |
FITS file has
extensions |
"BINTABLE" |
|
FITS |
|
BITPIX |
Byte |
Nr. of bits pr.
Pixel |
16 |
|
FITS |
|
NAXIS |
Byte |
Nr. of data
array dimensions |
2 |
|
FITS |
|
NAXIS1 |
Integer |
Bytes pr. Row |
163856 |
|
FITS |
|
NAXIS2 |
Integer |
Nr. of rows |
100 |
|
FITS |
|
PCOUNT |
Integer |
Random
parameter count |
0 |
|
FITS |
|
GCOUNT |
Integer |
Group count |
1 |
|
FITS |
|
TFIELDS |
Integer |
Nr. of columns |
16 |
|
FITS |
|
DATE |
String |
Date file was
written |
"YYYY-MM-DD" |
UTC |
FITSGEN[1] |
|
ORIGIN |
String |
Inst. File was
written |
"ITA-UiO" |
|
FITSGEN |
|
DATA_LEV |
Integer |
FITS level (0,
1, 2) |
0 |
|
FITSGEN |
|
DATE_RF0 |
String |
Date of level 0
reformat |
"YYYY-MM-DDThh-mm-ss.sss" |
UTC |
FITSGEN |
|
ORIG_RF0 |
String |
Where level 0
was written |
"JAXA/ISAS" |
|
FITSGEN |
|
DATE_RF1 |
String |
Date of level 1
reformat |
"YYYY-MM-DDThh-mm-ss.sss" |
UTC |
FITSGEN |
|
ORIG_RF1 |
String |
Where level 1
was written |
"ITA-UiO" |
|
FITSGEN |
|
VER_RF1 |
String |
Version of
reformatter program. |
"EIS_Lev1_Reformatter
Ver. 1.0b" |
|
FITSGEN |
|
VER_RF0 |
String |
Version of
reformatter program. |
"EIS_Lev0_Reformatter
Ver. 1.0b" |
|
FITSGEN |
|
TELESCOP |
String |
Telescope |
"Solar-B" |
|
FITSGEN |
|
INSTRUME |
String |
Instrument |
"EIS" |
|
FITSGEN |
|
OBSTITLE |
String |
Title of the observation |
"Oscillations
in sunspot umbrae" |
|
PT[2] |
|
TARGET |
String |
Target of Obs.
(AR, QS...) |
"AR" |
|
PT |
|
RAST_ACR |
String |
Raster acronym |
"OSLO_spot_1" |
|
PT |
|
STUD_ACR |
String |
Study Acronym |
"SUNSPOT_STUDY" |
|
PT |
|
|
|
|
|
|
|
|
OBS_DEC |
String |
A few sentences
describing the properties of the obs. |
� Filters and time resolution are optimized for
Temperature Analysis. |
|
PT |
|
JOIN_SB |
String |
Indicates joint
obs between the insttuments of not |
ESX, ES, EX,
SX, E, S, X |
|
PT |
|
OBS_NUM |
Integer |
Sequential
numbering of observation |
100 |
|
PT |
|
JOP_ID |
Integer |
Joint obs.
Program ID nr. |
20 |
|
PT |
|
STUDY_ID |
Long |
Study ID |
10 |
|
PT |
|
ST_AUTH |
String |
Study author
("owner" of st.) |
"Viggo
Hansteen" |
|
PT |
|
LL_ACR |
String |
Line List
Acronym |
"LL_OSLO_SPOT1" |
|
PT |
|
LL_ID |
Integer |
Line List ID
(unique) |
20 |
|
PT |
|
SOLB_SCI |
String |
Description of
Solar-B science objectives |
"Search for
nanoflares in the corona" |
|
PT |
|
EIS_SC |
String |
Description of
EIS Science Objectives |
"Search for
nanoflares in the corona" |
|
PT |
|
OBSERVER |
String |
Name of chief
observer |
"HANSTEEN
Viggo" |
|
PT |
|
PLANNER |
String |
Name of chief
planner |
"WIKSTØL,
Øivind" |
|
PT |
|
TOHBANS |
String |
Name of TOHBANS |
NANASHINO
Gonbei, HENOHENO Moheji |
|
PT |
|
NOAA_NUM |
Integer |
Active region
nr. |
11315 |
|
PT |
|
SCI_OBJ |
String |
Target
phenomena. Selected from a list |
AR, AFL, FL,
AFS |
|
PT |
|
DATATYPE |
String |
Type of data
(SCI ENG) |
"SCI" |
|
PT |
|
TIMESYS |
String |
Time System of
FITS file |
"UTC" |
|
FITSGEN |
|
DATE_OBS |
String |
Raster start
time |
"2006-22-11T18:00:00" |
UTC |
MDH/TC[3] |
|
DATE_END |
String |
Raster end time |
"2006-22-11T19:00:01" |
UTC |
MDH |
|
OBT_TIME |
Long |
On-board raster
start time (shutter open time of first exp.) |
12345.543 |
TI |
MDH |
|
OBT_END |
Long |
On-board raster
end time (shutter close time of last exp.) |
54321.123 |
TI |
MDH |
|
MAIN_ID |
Integer |
Raster Counter |
1 |
|
MDH |
|
MDPACK |
Byte |
# telemetry
packets pr. exposure |
10 |
|
MDH |
|
SEQ_NR |
Byte |
Sequence table
nr. |
47 |
|
MDH |
|
SLIT_NR |
Integer |
Slit nr. |
2 |
|
MDH |
|
SLIT_ID |
String |
Slit ID (1",
2", 40", 266") |
"266"" |
|
MDH[4] |
|
LL_NR |
Byte |
Line List nr. |
11 |
|
MDH |
|
NWIN |
Byte |
Number of line
windows |
25 |
|
MDH |
|
TL_ID |
Long |
Unique nr. for
each time line entry (aka sequence) |
48879 |
|
MDH |
|
RAST_ID |
Integer |
Unique nr. for
each raster |
22136 |
|
MDH |
|
TR_MODE |
String |
Tracking mode
of SC/Instr. |
"TR1" |
|
SC[5]/HK? |
|
FMIR_SS |
Integer |
Fine mirror
step size |
0 for
sit-and-stare > 0 for
scanning |
FMIR |
MDH |
|
RAST_REQ |
Integer |
Number of
raster exposures required |
200 |
|
MDH |
|
NEXP |
Long |
Number of
exposures performed in raster |
200 |
|
MDH |
|
NEXP_PRP |
Byte |
Number of exp.
Pr. Raster pos. |
8 |
|
MDH |
|
NRASTER |
Long |
Number of
unique raster positions (1 for sit-and-stare) |
1 for
sit-and-stare nexp/nexp_prp
for scanning |
|
MDH |
|
RREP_REQ |
Integer |
Number of
raster repeats required |
2 |
|
MDH |
|
RREP_PFD |
Integer |
Number of
raster repeats performed |
2 |
|
MDH |
|
SREP_REQ |
Byte |
Number of
sequence repeats required |
2 |
|
MDH |
|
SREP_PFD |
Byte |
Number of
sequence repeats performed |
2 |
|
MDH |
|
CCDXL |
Integer |
Max CCD length
incl scan pix. |
2097 |
Pixels |
MDH |
|
XWS |
Integer |
HW (Cam)
x-window start pix. |
400 |
Pixels |
MDH |
|
XW |
Integer |
HW (Cam)
x-window width |
32 |
Pixels |
MDH |
|
YWS |
Integer |
y-window start
pixel |
512 |
Pixels |
MDH |
|
YW |
Integer |
y-window width |
512 |
Pixels |
MDH |
|
XCEN |
Float |
Actual poitning
of center of image |
0.0 |
Arcsec |
SC |
|
YCEN |
Float |
Actual poitning
of center of image |
0.0 |
Arcsec |
SC |
|
CMIRR |
Integer |
Coarse mirror
position |
1 |
|
MDH |
|
CRPIX1 |
Float |
Reference Pixel
in Solar-X |
50.5 |
Pixel |
PT |
|
CRPIX2 |
Float |
Reference Pixel
in Solar-Y |
512.5 |
Pixel |
PT |
|
CRVAL1 |
Float |
Coordinate
value of CRPIX1 |
0.0 |
Arcsec |
SC |
|
CRVAL2 |
Float |
Coordinate
value of CRPIX2 |
0.0 |
Arcsec |
SC |
|
CDELT1 |
Float |
Pixel size in
Solar-X |
1.0 |
arcsec |
Cal[6] |
|
CDELT2 |
Float |
Pixel size in
Solar-Y |
1.0 |
arcsec |
Cal |
|
CDELT3 |
Float |
Pixel size in
wavelength (dispersion) |
0.0222750 |
Å/pix |
Cal |
|
CUNIT1 |
String |
Definition of
unit of axis 1 |
Arcsec/time |
|
FITSGEN[7] |
|
CUNIT2 |
String |
Definition of
unit of axis 2 |
Arcsec |
|
FITSGEN |
|
CUNIT3 |
String |
Definition of
unit of axis 3Å |
Angstrom |
|
FITSGEN |
|
CTYPE1 |
String |
Label for axis
1 |
"Solar-X" |
|
FITSGEN |
|
CTYPE2 |
String |
Label for axis
2 |
"Solar-Y" |
|
FITSGEN |
|
CTYPE3 |
String |
Label for axis3 |
"Wavelength" |
|
FITSGEN |
|
INST_ROT |
Float |
Instrument
rotation angle |
0.05 |
Degrees |
FITSGEN/ Cal |
|
SAT_ROT |
Float |
Satellite
rotation angle |
0.03 |
Degrees |
SC |
|
CROTA1 |
Float |
INST_ROT+SAT_ROT |
0.08 |
Degrees |
SC |
|
CROTA2 |
Float |
INST_ROT+SAT_ROT |
0.08 |
Deg |
SC |
|
FOVX |
Float |
Width of Field
of view in Solar X |
250.34 |
Deg |
SC/Cal |
|
FOVY |
Float |
Width of field
of view in Solar Y |
512.0 |
Deg |
SC/CAL? |
|
EISTFLXS |
Byte |
Sign of EIS
translation of XRT flare X coordinate |
1 |
0=pos 1=neg |
MDH |
|
EISTXFLX |
Integer |
EIS translation
of XRT flare X (relative EIS
FOV centre) |
10 |
Arcsec |
MDH |
|
EISTFLYS |
Byte |
Sign of EIS
translation of XRT flare Y coordinate |
0 |
0=neg. 1=pos. |
MDH |
|
EISTXFLY |
Integer |
EIS translation
of XRT flare Y (relative to EIS FOV centre) |
20 |
Arcsec |
MDH |
|
EISFLTX |
Integer |
EIS flare
trigger X-coordinate |
10 |
Arcsec |
MDH |
|
EISFLTY |
Integer |
EIS flare
trigger Y-coordinate |
35 |
Arcsec |
MDH |
|
EISEVTX |
Integer |
EIS event
trigger X-location |
1200 |
FMP[8] |
MDH |
|
EISEVTY |
Integer |
EIS event
trigger Y-position |
250 |
CCD Y |
MDH |
|
CAL_DC |
Integer |
Calibration
status, Dark current (1=done, 0=not done) |
1 |
|
DA[9] |
|
CAL_FF |
Integer |
Calibration
Status, Flat Field. (1=done, 0=not done) |
0 |
|
DA |
|
CAL_CR |
Integer |
Calibration
Status, Cosmic rays (1=done, 0=not done) |
0 |
|
DA |
|
CAL_WVL |
Integer |
Calibration
status, wavelength |
0 |
|
DA |
|
CAL_ABS |
Integer |
Calibration
status, absolute calibration (photometric) (1=done, 0=not done) |
0 |
|
DA |
|
BITCOMP1 |
Byte |
Bit compression
mode |
8 |
|
MDH |
|
IMGCOMP1 |
Byte |
Image
compression mode |
3 |
|
MDH |
|
BITC_VER |
Integer |
Bit compression
table number |
|
|
MDH |
|
ACHF_TAB |
Byte |
Huffman AC
table number |
0 |
|
MDH |
|
ACHF_VER |
Integer |
Huff AC table
version nr |
0 |
|
MDH |
|
DCHF_TAB |
Byte |
Huffman DC
table |
1 |
|
MDH |
|
DCHF_VER |
Integer |
Huff DC table
version nr |
1 |
|
MDH |
|
QUAN_TAB |
Byte |
Quantization
table |
2 |
|
MDH |
|
QTAB_VER |
Integer |
Qtab serial nr |
3 |
|
MDH |
|
SAA |
String |
Satellite in
SAA or not |
OUT |
|
ISACS-PLN |
|
HLZ |
String |
Satellite in
HLZ or not |
IN |
|
ISACS-PLN |
|
FLFLG |
String |
XRT flare
trigger status ("FLR" or "NON") |
"FLR" |
|
MDH |
|
XOCB |
Byte |
On-chip binning
X |
0 |
|
MDH |
|
YOCB |
Byte |
On-chip binning
Y |
0 |
|
MDH |
|
RONCCDAR |
Byte |
CCD-A right
read-out-node selected |
0=disabled 1=selected |
|
MDH |
|
RONCCDAL |
Byte |
CCD-A left RON
selected |
|
|
MDH |
|
RONCCDBR |
Byte |
CCD-B right RON
selected |
|
|
MDH |
|
RONCCDBL |
Byte |
CCD-B left RON
selected |
|
|
MDH |
|
EISAEC |
Byte |
EIS AEC status |
T=enabled F=disabled |
|
MDH |
|
EISEVTR |
Byte |
EIS event
trigger status |
T=enabled F=disabled |
|
MDH |
|
EISFLTR |
Byte |
EIS flare
trigger status |
T=enabled F=disabled |
|
MDH |
|
ASRCDIR |
Byte |
Anti Solar
Rotation Compensation (ASRC) dir. |
0=forward
1=backward |
|
MDH |
|
ASRCNR |
Byte |
ASRC number of
steps |
2 |
FMIR |
MDH |
|
ASRCSKIP |
Byte |
ASRC frequency |
1 |
Rasters |
MDH |
Table 2. Binary Table
Extension Keywords
|
Keyword |
Format |
Description |
Example |
Unit |
Origin |
|
TFORMn |
Integer |
Nr of bytes in column(?) |
"131072I" |
Byte |
FITS |
|
TTYPEn |
String |
Line ID |
"Fe IX 195.03" |
|
PT |
|
TDIMn |
String |
Array dimensions for column |
"(256,512)" |
|
FITSGEN |
|
TUNITn |
String |
Unit of pixel data |
"ADC" |
|
FITSGEN |
|
TDESCn |
String |
Description of data dimensions |
"(Wavelength, solar_x, solar_y)" |
|
FITS |
|
TCUNIn |
String |
Descrition of data units |
"(Angstrom, arcsec, arcsec)" |
|
FITS |
|
TDMINn |
Integer |
Minimum value of column |
0 |
|
FITSGEN |
|
TDMAXn |
Integer |
Maximum value of column |
16344 |
|
FITSGEN |
|
TDELTn |
String |
Axis increments |
"(0.02275,1,1)" |
TCUNIn |
FITS/Cal |
|
TDETXn |
Integer |
Line window start X-position |
1109 |
Pixel |
MDH |
|
TDETXWn |
Integer |
Line window X-width |
32 |
pixels |
MDH |
|
TDETYn |
Integer |
Line window start Y-position |
200 |
Pixel |
MDH |
|
TWAVEn |
Float |
Principal wavelength |
195.32 |
Å |
PT |
|
TWMINn |
Float |
(Preliminary) minimum wavelength of line window |
195.03 |
Å |
FITS/Cal[10] |
|
TWMAXn |
Float |
(Preliminary) maximum wavelength of line window |
195.61 |
Å |
FITS/Cal |
|
TWBNDn |
String |
Wavelength band |
"A" or "B" |
|
FITSGEN |
|
CCDRONn |
Byte |
CCD Read Out Node |
1 |
|
MDH |
|
WINHDRn |
Byte |
Line window header |
3 |
|
MDH |
|
|
|
|
|
|
|
Table
3. Binary Table Extensions
[1] Keyword set by the EIS FITS production software
[2] Information retrieved from the As-planned database.
[3] MDH – Mission data header. Contains time of exposures in TI units. To convert to UTC we need time conversion algorithm.
[4] SLIT_NR converted to actual width of slit
[5] Spacecraft data – Comes from separate spacecraft data telemetry packets
[6] This value
should be read from an updated archive of calibration data.
[7] Depends on
sit-and-stare or scanning. Determind from FMIR_SS
[8] Fine Mirror Position (0-2400 steps)
[9] Updated by the data analysis/Calibration software
[10] A preliminary wavelength scale is obtained from the dispersion. If wavelength calibration is performed later, this value could be updated in higher level FITS files.