ASTROSAT CZTI

Data Quality Report

Orbit 56466

Creation date: 2026-03-06T13:16:17.889992
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_060T01_9000006556_56466cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56466cztM0_level2_quad_clean.evt
Size (bytes)851,178,24084,758,400
Size811.7 MB 80.8 MB
Events in quadrant A16,493,474162,575
Events in quadrant B3,516,403726,883
Events in quadrant C4,362,503634,130
Events in quadrant D6,574,050538,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537513
B0154063
C0181763
D0245033

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7236566978.344389%
B72361972.722499%
C72363404.698729%
D723699713.778331%

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 7811 7237 5381 5381 68.89% 74.35%
B 7811 7239 7 7 0.09% 0.10%
C 7811 7239 193 193 2.47% 2.67%
D 7811 7238 795 795 10.18% 10.98%

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 12 3 7087593 64638.06 437 425 109.6
A 4 95 5463666 49827.14 437 425 109.6
A 12 194 886884 8084.89 437 425 109.6
B 0 63 100712 588.46 795 766 169.8
B 5 172 51473 298.55 795 766 169.8
B 0 213 44393 256.87 795 766 169.8
C 13 3 490501 2304.21 778 769 212.5
C 15 230 460641 2163.72 778 769 212.5
C 6 223 189927 890.0 778 769 212.5
D 12 4 2136270 10301.91 734 701 207.3
D 2 249 547865 2639.5 734 701 207.3
D 8 129 400952 1930.8 734 701 207.3

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