ASTROSAT CZTI

Data Quality Report

Orbit 53460

Creation date: 2025-08-16T05:40:33.891838
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_002T06_9000006496_53460cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53460cztM0_level2_quad_clean.evt
Size (bytes)909,374,40097,862,400
Size867.2 MB 93.3 MB
Events in quadrant A5,421,263734,211
Events in quadrant B4,735,149823,050
Events in quadrant C18,119,870181,353
Events in quadrant D4,773,367675,338

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217862
B0196402
C0592222
D0199162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78965446.889564%
B78962833.584093%
C7896620578.584093%
D78962082.634245%

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 8321 7898 445 445 5.35% 5.63%
B 8321 7898 70 70 0.84% 0.89%
C 8321 7896 5611 5611 67.43% 71.06%
D 8321 7898 158 158 1.90% 2.00%

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 1487928 7026.41 857 833 211.6
A 3 63 345866 1630.26 857 833 211.6
A 0 8 63015 293.81 857 833 211.6
B 4 171 576560 3068.22 868 835 187.6
B 8 234 130692 692.05 868 835 187.6
B 5 185 122857 650.29 868 835 187.6
C 1 241 7466296 59014.8 462 457 126.5
C 7 64 2884912 22800.59 462 457 126.5
C 9 38 2189455 17303.25 462 457 126.5
D 2 153 420905 1759.33 847 810 238.8
D 8 176 244819 1021.89 847 810 238.8
D 3 12 198006 825.84 847 810 238.8

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