ASTROSAT CZTI

Data Quality Report

Orbit 56249

Creation date: 2026-02-19T23:32:32.374308
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_049T01_9000006552_56249cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56249cztM0_level2_quad_clean.evt
Size (bytes)906,117,12090,800,640
Size864.1 MB 86.6 MB
Events in quadrant A13,445,768410,919
Events in quadrant B4,281,518740,096
Events in quadrant C5,351,037645,453
Events in quadrant D9,900,298445,156

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0449835
B0178780
C0211280
D0345020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7286348247.790283%
B72861702.333242%
C72873745.132428%
D7287227031.151365%

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 7286 7286 3380 3380 46.39% 46.39%
B 7286 7286 74 74 1.02% 1.02%
C 7287 7287 296 296 4.06% 4.06%
D 7287 7287 1976 1976 27.12% 27.12%

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 8 176 4944934 29888.92 665 648 165.4
A 15 32 3376073 20404.93 665 648 165.4
A 12 115 1031702 6232.87 665 648 165.4
B 4 171 601900 3590.4 782 753 167.4
B 10 247 126811 752.89 782 753 167.4
B 7 252 87519 518.22 782 753 167.4
C 12 254 1545366 7591.76 748 743 203.5
C 13 3 477163 2341.58 748 743 203.5
C 5 250 198707 972.98 748 743 203.5
D 8 129 5641158 30059.39 653 621 187.6
D 2 249 1043664 5558.55 653 621 187.6
D 14 52 187907 998.08 653 621 187.6

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