MDI Observables: fd

MDI Resident Archive

MDI Observables

mdi.fd_Ic

Description

Intensity of the computed continuum, from both 60-second and 30-second observations in full-disc mode, sampled once per minute at second 00 The data are acquired as part of certain MDI Dynamics Campaigns and partly as part of the daily monitoring program. All images were cropped to a radius of about 504 pixels, just beyond the maximum nominal solar radius, prior to telemetry 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 90% 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	279	.006	.129	.078	.016	.107	0
Complete	240	.005	.123	.059	.013	.105	0

Superseded records: 420 in addition to 3108226 valid.

Data Storage

Statistics of SUMS data storage:

SUMS directories: 51,883
Average size (MB): 5.146
Minimum size (MB): 0.037
Maximum size (MB): 61.652
Total size (GB): 260.740

DSDS Source Series

sha.dsds[mdi][lev1.5][fd_Ic_01h]

MDI Product Codes of Contributing Level 0 Data

80000000 (only for fill records with no data)

46020fc0

46051fc0

46061fc0

46451fc0

46481fc0

Keywords

Prime key(s):

T_REC (time) : 3108646/3108646 valid (3108226 distinct):
    range: 1996.03.19_17:00:00_TAI – 2011.04.11_14:59:00_TAI

Variable key(s):

cparms_sg000 (string) : all 3108646 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 3108646 default: = 0 (0)
data_bscale (double) : all 3108646 default: = 1 (1)
T_OBS (time) : 284202/3108646 valid (284183 distinct):
    range: 1996.03.19_17:14:00_TAI – 2011.04.11_14:30:00_TAI
    2824444 default: = 'NaN' (nan)
DATE__OBS (time) : 284202/3108646 valid (284183 distinct):
    range: 1996-03-19T17:13:00Z – 2011-04-11T14:29:11Z
    2824444 default: = 'NaN' (nan)
CDELT1 (float) : 284202/3108646 valid (18867 distinct):
    range: 1.977283 – 1.986302
    2824444 default: = 'NaN' (nan)
CDELT2 (float) : 284202/3108646 valid (18867 distinct):
    range: 1.977283 – 1.986302
    2824444 default: = 'NaN' (nan)
CRPIX1 (float) : 284202/3108646 valid (18385 distinct):
    range: 511.247 – 514.359
    2824444 default: = 'NaN' (nan)
CRPIX2 (float) : 284202/3108646 valid (36998 distinct):
    range: 510.252 – 514.046
    2824444 default: = 'NaN' (nan)
CROTA2 (float) : 284202/3108646 valid (13002 distinct):
    range: -145.0 – 180.0
    2824444 default: = 'NaN' (nan)
CAR_ROT (int) : 3108646/3108646 valid (198 distinct):
    range: 1907 – 2108
CRLN_OBS (float) : 3108646/3108646 valid (2905036 distinct):
    range: 0.000 – 360.000
CRLT_OBS (float) : 3108646/3108646 valid (2925146 distinct):
    range: -7.3030 – 7.2937
DSUN_OBS (double) : 3108646/3108646 valid (3108150 distinct):
    range: 145493590812.22 – 150817911673.99
OBS_VR (double) : 3108646/3108646 valid (3108226 distinct):
    range: -588.730664 – 587.618347
OBS_VW (double) : 3108646/3108646 valid (3108180 distinct):
    range: 28556.841071 – 30079.387972
OBS_VN (double) : 3108646/3108646 valid (3108219 distinct):
    range: -3827.541231 – 3722.207934
RSUN_OBS (double) : 3108646/3108646 valid (3108209 distinct):
    range: 951.881730 – 986.715991
R_SUN (float) : 284202/3108646 valid (224930 distinct):
    range: 479.279 – 498.872
    2824444 default: = 'NaN' (nan)
X0 (float) : 284202/3108646 valid (31464 distinct):
    range: 510.247 – 513.359
    2824444 default: = 'NaN' (nan)
Y0 (float) : 284202/3108646 valid (51933 distinct):
    range: 509.252 – 513.046
    2824444 default: = 'NaN' (nan)
EARTH_DT (float) : 284202/3108646 valid (265268 distinct):
    range: 4.095437 – 5.654331
    2824444 default: = 'NaN' (nan)
DATAVALS (int) : 3108646/3108646 valid (4557 distinct):
    range: 0 – 798020
MISSVALS (int) : 284202/3108646 valid (4557 distinct):
    range: 0 – 798020
    2824444 default: = -2147483648 (-2147483648)
DATAMIN (float) : 284202/3108646 valid (647 distinct):
    range: -115.0 – 6984.0
    2824444 default: = 'NaN' (nan)
DATAMAX (float) : 284202/3108646 valid (4808 distinct):
    range: 0.0 – 39540.0
    2824444 default: = 'NaN' (nan)
DATAMEDN (float) : 284202/3108646 valid (162886 distinct):
    range: -1.893 – 26673.518
    2824444 default: = 'NaN' (nan)
DATAMEAN (float) : 284202/3108646 valid (236352 distinct):
    range: 0.000 – 27065.393
    2824444 default: = 'NaN' (nan)
DATARMS (float) : 284202/3108646 valid (270935 distinct):
    range: 0.000000 – 14587.042000
    2824444 default: = 'NaN' (nan)
DATASKEW (float) : 284202/3108646 valid (261145 distinct):
    range: -2.662 – 14.287
    2824444 default: = 'NaN' (nan)
DATAKURT (float) : 284202/3108646 valid (279190 distinct):
    range: -1.934 – 220.741
    2824444 default: = 'NaN' (nan)
INTERVAL (float) : 284202/3108646 valid (2 distinct):
    60.00
    30.00
    2824444 default: = 'NaN' (nan)
BLD_VERS (string) : 284202/3108646 valid (2 distinct):
    V6R1X
    V6R0X
    2824444 default: = '' ()
DATE (time) : 3108646/3108646 valid (104753 distinct):
    range: 2012-04-04T23:00Z – 2012-04-07T03:26Z
RUNTIME (time) : 284202/3108646 valid (46379 distinct):
    range: 1997.05.31_07:42_UTC – 2011.05.23_20:39_UTC
    2824444 default: = 'NaN' (nan)
SOURCE (string) : 284202/3108646 valid (283911 distinct):
    range: prog:mdi,level:lev0[1],series:46020fc0_01h[28169] – prog:mdi,level:lev1[9],series:46481fc0_01h[36959],sel:[9]
    2824444 default: = '' ()
BLDVER15 (string) : 266221/3108646 valid (30 distinct):
    range: -50500 – 60100
    2842425 default: = '' ()
CALTBLS (string) : 283923/3108646 valid (1 distinct):
    mdi.caltables_intensity[fd_vers_1]
    2824723 default: = '' ()
TBLXYUPD (time) : 284202/3108646 valid (820 distinct):
    range: 1997.05.31_02:42:43_UTC – 2011.05.23_19:05:04_UTC
    2824444 default: = 'NaN' (nan)
XY_FROM (string) : 284202/3108646 valid (2 distinct):
    ????
    2824444 default: = '' ()
XY_QUAL (int) : 284202/3108646 valid (2 distinct):
    0
    -1
    2824444 default: = -2147483648 (-2147483648)
HISTORY (string) : all 3108646 default: = '' ()
DPC (int) : 284204/3108646 valid (5 distinct):
    0x46061fc0
    0x46481fc0
    0x46020fc0
    0x46051fc0
    0x46451fc0
    2824442 default: = -2147483648 (0x80000000)
QUALITY (int) : 3108646/3108646 valid (48 distinct):
    range: 0x80000000 – 0x40000200

Constant key(s):

CAMERA (string) : MDI
CONTENT (string) : MDI Full Disk Intensity Continuum
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
POLSTATE (string) : LP
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
CROP_RAD (float) : 504.0
COMMENT (string) : Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO)

Special Notes

this page last modified 24 Jul 2015, 16:43-0700