ASTROSAT CZTI

Data Quality Report

Orbit 53657

Creation date: 2025-08-29T13:02:44.308558
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_022T05_9000006504_53657cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53657cztM0_level2_quad_clean.evt
Size (bytes)846,129,60074,891,520
Size806.9 MB 71.4 MB
Events in quadrant A16,061,85039,410
Events in quadrant B3,959,169671,461
Events in quadrant C5,393,059585,763
Events in quadrant D5,403,652518,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521949
B0160622
C0204572
D0207012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6487620195.591182%
B64872313.560968%
C64874506.936951%
D648769710.744566%

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 7606 6486 5737 5737 75.43% 88.45%
B 7607 6488 121 121 1.59% 1.86%
C 7607 6488 379 379 4.98% 5.84%
D 7607 6488 602 602 7.91% 9.28%

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 63 8957910 143992.22 244 238 62.2
A 14 254 5402573 86841.11 244 238 62.2
A 10 253 315686 5070.74 244 238 62.2
B 5 172 913085 6024.78 704 680 151.4
B 10 254 47064 306.28 704 680 151.4
B 7 252 46579 303.08 704 680 151.4
C 15 224 1766345 9305.07 678 674 189.8
C 1 241 374014 1967.5 678 674 189.8
C 14 80 69904 364.84 678 674 189.8
D 8 176 1818496 9718.23 655 626 187.1
D 10 118 221966 1183.27 655 626 187.1
D 13 153 209438 1116.3 655 626 187.1

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