ASTROSAT CZTI

Data Quality Report

Orbit 56729

Creation date: 2026-03-24T15:13:55.695843
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_56729cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56729cztM0_level2_quad_clean.evt
Size (bytes)497,347,200108,904,320
Size474.3 MB 103.9 MB
Events in quadrant A5,547,444689,535
Events in quadrant B3,847,178774,895
Events in quadrant C4,573,369661,861
Events in quadrant D3,848,885640,136

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217361
B0170810
C0193060
D0172290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76354385.736739%
B7636610.798848%
C76362973.889471%
D7636420.550026%

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 7635 7635 398 398 5.21% 5.21%
B 7636 7636 30 30 0.39% 0.39%
C 7636 7636 261 261 3.42% 3.42%
D 7636 7636 47 47 0.62% 0.62%

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 851173 4289.01 805 785 198.3
A 3 62 807571 4069.1 805 785 198.3
A 10 251 687681 3464.42 805 785 198.3
B 5 185 314926 1759.11 818 785 178.6
B 4 206 112449 625.29 818 785 178.6
B 10 247 77585 430.06 818 785 178.6
C 15 208 525323 2431.17 781 773 215.8
C 13 3 459752 2127.26 781 773 215.8
C 6 223 225930 1043.55 781 773 215.8
D 2 207 274383 1228.26 789 754 222.8
D 2 249 151061 674.7 789 754 222.8
D 2 252 132941 593.36 789 754 222.8

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