ASTROSAT CZTI

Data Quality Report

Orbit 54147

Creation date: 2025-10-01T13:01:23.354575
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_012T01_9000006512_54147cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54147cztM0_level2_quad_clean.evt
Size (bytes)1,750,907,520260,415,360
Size1.6 GB 248.4 MB
Events in quadrant A10,267,6681,793,425
Events in quadrant B13,716,8291,840,741
Events in quadrant C11,512,2981,678,814
Events in quadrant D27,794,2971,213,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452253
B0548144
C0494913
D0962783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197033601.827133%
B1970212886.537407%
C197039875.009389%
D19703528926.843628%

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 20893 19706 225 225 1.08% 1.14%
B 20892 19705 934 934 4.47% 4.74%
C 20893 19706 1011 1011 4.84% 5.13%
D 20893 19706 5545 5545 26.54% 28.14%

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 15 174 833380 1643.57 2064 2014 505.8
A 10 253 353916 695.69 2064 2014 505.8
A 3 14 256460 503.03 2064 2014 505.8
B 5 185 2967524 6900.77 2016 1941 429.7
B 4 171 566397 1313.46 2016 1941 429.7
B 15 20 519612 1204.6 2016 1941 429.7
C 1 241 2809807 5164.15 1987 1965 543.7
C 15 233 189670 345.22 1987 1965 543.7
C 1 16 107958 194.94 1987 1965 543.7
D 7 70 16497300 31640.46 1840 1752 521.3
D 8 176 930696 1781.83 1840 1752 521.3
D 2 172 743935 1423.6 1840 1752 521.3

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