ASTROSAT CZTI

Data Quality Report

Orbit 52158

Creation date: 2025-05-20T14:55:32.841363
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/AS1C09_011T08_9000006472_52158cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52158cztM0_level2_quad_clean.evt
Size (bytes)815,938,56066,496,320
Size778.1 MB 63.4 MB
Events in quadrant A5,149,831560,261
Events in quadrant B3,823,249605,134
Events in quadrant C8,615,773408,969
Events in quadrant D12,128,0181,500

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197740
B0156860
C0299300
D0403720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62592634.201949%
B62592103.355169%
C6259199731.906055%
D6259624699.792299%

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 7019 6259 180 180 2.56% 2.88%
B 7019 6259 114 114 1.62% 1.82%
C 7019 6259 1870 1870 26.64% 29.88%
D 7018 6258 2966 2966 42.26% 47.40%

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 4 3 1071888 6582.26 648 630 162.7
A 3 95 366027 2245.15 648 630 162.7
A 4 95 237626 1456.2 648 630 162.7
B 10 44 274166 1999.98 641 619 136.8
B 10 254 253133 1846.2 641 619 136.8
B 4 171 163573 1191.4 641 619 136.8
C 15 224 4208892 27973.48 541 535 150.4
C 0 192 1063825 7067.82 541 535 150.4
C 3 233 506293 3361.84 541 535 150.4
D 12 1 10160296 573976.47 55 52 17.7
D 6 42 1537247 86839.82 55 52 17.7
D 12 3 43493 2454.09 55 52 17.7

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