ASTROSAT CZTI

Data Quality Report

Orbit 58081

Creation date: 2026-06-23T04:33:22.330672
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_031T01_9000006584_58081cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58081cztM0_level2_quad_clean.evt
Size (bytes)602,625,600112,703,040
Size574.7 MB 107.5 MB
Events in quadrant A3,832,669763,191
Events in quadrant B8,678,063706,832
Events in quadrant C4,005,673721,579
Events in quadrant D5,168,427663,424

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174221
B0314691
C0178121
D0211061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8019991.234568%
B8019127115.849857%
C80191111.384212%
D80193254.052874%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8264 8021 38 38 0.46% 0.47%
B 8264 8021 894 894 10.82% 11.15%
C 8264 8021 92 92 1.11% 1.15%
D 8264 8020 260 260 3.15% 3.24%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 251 319000 1444.71 892 865 220.2
A 3 61 18862 81.73 892 865 220.2
A 4 3 13783 58.66 892 865 220.2
B 10 128 4618256 26217.47 819 788 176.1
B 4 171 251246 1422.07 819 788 176.1
B 2 249 169825 959.77 819 788 176.1
C 12 254 268853 1143.21 855 846 234.4
C 12 252 142094 602.51 855 846 234.4
C 15 201 82660 348.98 855 846 234.4
D 12 1 914285 3858.16 841 802 236.8
D 12 110 244893 1030.94 841 802 236.8
D 2 249 194192 816.8 841 802 236.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter