ASTROSAT CZTI

Data Quality Report

Orbit 56073

Creation date: 2026-02-09T17:34:20.425262
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_083T03_9000006548_56073cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56073cztM0_level2_quad_clean.evt
Size (bytes)362,888,64090,144,000
Size346.1 MB 86.0 MB
Events in quadrant A4,011,916568,935
Events in quadrant B2,946,897637,927
Events in quadrant C3,032,789561,176
Events in quadrant D2,951,211522,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164241
B0134251
C0138721
D0137851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62922914.624921%
B6293500.794534%
C6293350.556174%
D6293610.969331%

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 7197 6293 247 247 3.43% 3.92%
B 7198 6294 12 12 0.17% 0.19%
C 7198 6294 37 37 0.51% 0.59%
D 7198 6294 58 58 0.81% 0.92%

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 32 854662 5313.19 643 626 160.7
A 5 242 209219 1297.71 643 626 160.7
A 3 94 122937 760.93 643 626 160.7
B 0 231 151081 1080.18 653 631 139.3
B 10 247 37737 266.41 653 631 139.3
B 0 213 28189 197.86 653 631 139.3
C 15 147 299817 1722.8 629 622 173.7
C 12 252 115475 661.34 629 622 173.7
C 6 223 42976 243.88 629 622 173.7
D 8 240 207646 1180.62 622 593 175.4
D 2 249 53653 302.55 622 593 175.4
D 14 52 53565 302.05 622 593 175.4

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