MDI Observables: mdi.fd_I0

MDI Resident Archive

MDI Observables

mdi.fd_I0_extract

Description

Intensity of the filtergram at the 0-tuning position, nominally furthest from line center, from 30-second observations in full-disc mode, sampled once per minute at second 30 and extracted into subrasters of dimension 1024*500 on the camera. The data are acquired occasionally during certain targeted campaigns. All of the data are acquired in circular polarization.

There is one record per minute during hours when there are any images, to assure continuity of certain ancillary data. Records for which there is no image (fill records) have the high-order bit of the QUALITY keyvalue set, and have DATAVALS = 0. Approximately 16% of the records are fill.

Coverage / Duty Cycle

The fraction of possible time intervals containing partial or complete images during each mission phase is as follows:

	<1996.04.20 (Record count only)	1996.04.20 – 1996.05.22	1996.05.23 – 1998.06.24	1998.10.20 – 1998.12.21	1999.02.03 – 2010.09.14	2010.09.14 – 2011.04.12	>2011.04.12 (Record count only)
Partial	0	0	.0118	.0280	.0016	0	0
Complete	0	0	.0117	.0279	.0016	0	0

Most of the data were obtained during the following campaign intervals:

1996.10.23–24
1996.11.06–09
1997.02.18
1997.12.20–21
1998.05.26 – 06.07
1998.06.12
1998.12.09–10
1998.12.12–16
1999.07.31 – 08.01
1999.08.03–06
2001.02.09
2001.02.16
2003.11.26 – 12.02

Additional data were taken as part of very brief test/validation sequences only at the following times:

1996.10.21 19:05–19:09
1998.11.10 20:03–20:05
2002.03.12 17:11–17:15
2003.11.25 19:16–19:19
2006.07.31 19:57–19:59
2007.03.22 15:00–15:03
2009.09.02 13:47–13:50

Superseded records: 60 in addition to 30900 valid

Data Storage

Statistics of SUMS data storage:

SUMS directories: 515
Average size (MB): 20.706
Minimum size (MB): 0.385
Maximum size (MB): 27.702
Total size (GB): 10.413

DSDS Source Series

sha.dsds[mdi][lev1.5][fd_I0_1024x500_01h]

MDI Product Codes of Contributing Level 0 Data

404b3d00

80000000 (only for fill records with no data)

Keywords

Prime key(s):

T_REC (time) : 30960/30960 valid (30900 distinct):
    range: 1996.10.21_19:00:30_TAI – 2009.09.02_13:59:30_TAI

Variable key(s):

DATAMEAN (float) : 25821/30960 valid (22328 distinct):
    range: 0.000 – 2891.233
    5139 default: = 'NaN' (nan)
DATARMS (float) : 25821/30960 valid (21507 distinct):
    range: 0.000000 – 1392.729610
    5139 default: = 'NaN' (nan)
cparms_sg000 (string) : all 30960 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 30960 default: = 0 (0)
data_bscale (double) : all 30960 default: = 1 (1)
T_OBS (time) : 25821/30960 valid (25761 distinct):
    range: 1996.10.21_19:05:30_TAI – 2009.09.02_13:50:28_TAI
    5139 default: = 'NaN' (nan)
DATE__OBS (time) : 25821/30960 valid (25761 distinct):
    range: 1996-10-21T19:04:45Z – 2009-09-02T13:49:39Z
    5139 default: = 'NaN' (nan)
DATASKEW (float) : 25821/30960 valid (24828 distinct):
    range: -2.772 – 4.741
    5139 default: = 'NaN' (nan)
CDELT1 (float) : 25821/30960 valid (367 distinct):
    range: 1.977373 – 1.986029
    5139 default: = 'NaN' (nan)
CDELT2 (float) : 25821/30960 valid (367 distinct):
    range: 1.977373 – 1.986029
    5139 default: = 'NaN' (nan)
CRPIX1 (float) : 25821/30960 valid (5830 distinct):
    range: -348.615 – 513.350
    5139 default: = 'NaN' (nan)
CRPIX2 (float) : 25821/30960 valid (16726 distinct):
    range: -261299.203 – 512.779
    5139 default: = 'NaN' (nan)
CROTA2 (float) : 25821/30960 valid (4 distinct):
    0.0
    -9.82110
    -9.82107
    180.0
    5139 default: = 'NaN' (nan)
CAR_ROT (int) : 30960/30960 valid (16 distinct):
    range: 1915 – 2087
CRLN_OBS (float) : 30960/30960 valid (30893 distinct):
    range: 1.485 – 359.281
CRLT_OBS (float) : 30960/30960 valid (30900 distinct):
    range: -7.2385 – 7.1841
DSUN_OBS (double) : 30960/30960 valid (30900 distinct):
    range: 145605969906.58 – 150569686312.19
OBS_VR (double) : 30960/30960 valid (30900 distinct):
    range: -558.392503 – 564.876416
OBS_VW (double) : 30960/30960 valid (30900 distinct):
    range: 28755.402948 – 29919.762869
OBS_VN (double) : 30960/30960 valid (30900 distinct):
    range: -3774.181296 – 3711.604559
RSUN_OBS (double) : 30960/30960 valid (30900 distinct):
    range: 953.450989 – 985.954435
R_SUN (float) : 25821/30960 valid (24082 distinct):
    range: 481.247 – 498.135
    5139 default: = 'NaN' (nan)
X0 (float) : 25821/30960 valid (8891 distinct):
    range: -349.615 – 512.350
    5139 default: = 'NaN' (nan)
Y0 (float) : 25821/30960 valid (16742 distinct):
    range: -261300.203 – 511.779
    5139 default: = 'NaN' (nan)
EARTH_DT (float) : 25821/30960 valid (23932 distinct):
    range: 4.140712 – 5.641010
    5139 default: = 'NaN' (nan)
DATAVALS (int) : 30960/30960 valid (256 distinct):
    range: 0 – 512000
MISSVALS (int) : 25821/30960 valid (256 distinct):
    range: 0 – 512000
    5139 default: = -2147483648 (-2147483648)
DATAMIN (float) : 25821/30960 valid (4 distinct):
    -94.0
    -92.0
    0.0
    -93.0
    5139 default: = 'NaN' (nan)
DATAMAX (float) : 25821/30960 valid (1019 distinct):
    range: 0.0 – 32750.0
    5139 default: = 'NaN' (nan)
DATAMEDN (float) : 25821/30960 valid (3734 distinct):
    range: 0.000 – 3143.979
    5139 default: = 'NaN' (nan)
DPC (int) : 30960/30960 valid (2 distinct):
    0x404b3d00
    0xffffffff80000000
DATAKURT (float) : 25821/30960 valid (25021 distinct):
    range: -1.822 – 100.370
    5139 default: = 'NaN' (nan)
BLD_VERS (string) : 25821/30960 valid (1 distinct):
    V7R0X
    5139 default: = '' ()
DATE (time) : 30960/30960 valid (5256 distinct):
    range: 2012-09-06T01:27Z – 2012-09-06T03:03Z
RUNTIME (time) : 25821/30960 valid (515 distinct):
    range: 2001.02.05_17:46_UTC – 2009.10.01_16:40_UTC
    5139 default: = 'NaN' (nan)
SOURCE (string) : 25821/30960 valid (25761 distinct):
    range: prog:mdi,level:lev1[1],series:404b3d00_01h[119035],sel:[0] – prog:mdi,level:lev1[5],series:404b3d00_01h[47452],sel:[9]
    5139 default: = '' ()
BLDVER15 (string) : 25821/30960 valid (5 distinct):
    60100
    40705
    41200
    -50500
    50900
    5139 default: = '' ()
CALTBLS (string) : 25821/30960 valid (1 distinct):
    mdi.caltables_intensity[fd_vers_0]
    5139 default: = '' ()
TBLXYUPD (time) : 25821/30960 valid (12 distinct):
    range: 2001.02.02_23:59:35_UTC – 2009.09.29_19:44:47_UTC
    5139 default: = 'NaN' (nan)
XY_FROM (string) : 25821/30960 valid (1 distinct):
    SMOOTH
    5139 default: = '' ()
XY_QUAL (int) : 25821/30960 valid (1 distinct):
    0
    5139 default: = -2147483648 (-2147483648)
HISTORY (string) : all 30960 default: = '' ()
POLSTATE (string) : all 30960 default: = 'UNK' (UNK)
COMMENT (string) : 30960/30960 valid (1 distinct):
    Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO).
QUALITY (int) : 30960/30960 valid (15 distinct):
    range: 0x80000000 – 0x000002bd

Constant key(s):

INTERVAL (float) : 30.00
CAMERA (string) : MDI
CONTENT (string) : MDI High Resolution Continuum Filtergram Extract
CRVAL1 (float) : 0.000
CRVAL2 (float) : 0.000
CTYPE1 (string) : HPLN-TAN
CTYPE2 (string) : HPLT-TAN
CUNIT1 (string) : arcsec
CUNIT2 (string) : arcsec
WCSAXES (int) : 2
WCSNAME (string) : Helioprojective-cartesian
BUNIT (string) : Arbitrary intensity units
CADENCE (float) : 60.0
INSTRUME (string) : MDI
TELESCOP (string) : SOHO
WAVELNTH (int) : 6768
ORIGIN (string) : SOI Science Support Center
ROLL_TBL (string) : mdi.roll_table
RSUN_REF (double) : 696000000
T_REC_epoch (time) : 1977.01.01_00:33:13_TAI
T_REC_step (float) : 60.0

Special Notes

DP 404b3d00 was always acquired in conjunction with DP 42472d00 (mdi.fd_V_extract) and 48472d00 (mdi.fd_M_extract).

this page last modified 9 Mar 2016, 10:24-0800