ASTROSAT CZTI

Data Quality Report

Orbit 56766

Creation date: 2026-03-26T17:56:15.530086
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_083T05_9000006560_56766cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56766cztM0_level2_quad_clean.evt
Size (bytes)397,552,32093,545,280
Size379.1 MB 89.2 MB
Events in quadrant A3,490,130609,507
Events in quadrant B3,854,257651,059
Events in quadrant C3,658,289569,613
Events in quadrant D3,215,627556,166

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146261
B0158071
C0156581
D0139621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63951101.720094%
B63962173.392745%
C63963124.878049%
D6396721.125704%

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 7400 6396 48 48 0.65% 0.75%
B 7401 6397 96 96 1.30% 1.50%
C 7401 6397 259 259 3.50% 4.05%
D 7401 6397 16 16 0.22% 0.25%

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 3 14 509869 2953.21 692 673 172.4
A 15 33 146050 843.15 692 673 172.4
A 10 251 96146 553.72 692 673 172.4
B 5 185 414154 2817.99 674 649 146.7
B 10 247 243308 1653.7 674 649 146.7
B 4 206 215142 1461.75 674 649 146.7
C 15 230 865420 4797.39 659 652 180.3
C 9 38 95033 523.59 659 652 180.3
C 6 223 38482 209.87 659 652 180.3
D 5 113 145126 762.35 672 639 189.5
D 2 249 92425 484.29 672 639 189.5
D 2 62 77272 404.34 672 639 189.5

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