ASTROSAT CZTI

Data Quality Report

Orbit 52540

Creation date: 2025-06-15T06:21:56.084499
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_011T06_9000006478_52540cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52540cztM0_level2_quad_clean.evt
Size (bytes)804,692,16080,055,360
Size767.4 MB 76.3 MB
Events in quadrant A3,253,998623,781
Events in quadrant B6,003,699623,661
Events in quadrant C11,712,365296,719
Events in quadrant D8,321,531432,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144042
B0223682
C0392772
D0291724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6403721.124473%
B640366310.354521%
C6403352255.005466%
D6402168426.304280%

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 7593 6404 43 43 0.57% 0.67%
B 7593 6404 512 512 6.74% 8.00%
C 7593 6404 2924 2924 38.51% 45.66%
D 7592 6403 1482 1482 19.52% 23.15%

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 46 210594 1229.15 673 655 170.8
A 6 233 112855 656.91 673 655 170.8
A 15 174 47632 275.04 673 655 170.8
B 10 254 1454544 10575.95 647 624 137.5
B 10 44 1183077 8601.28 647 624 137.5
B 0 213 174983 1268.3 647 624 137.5
C 15 248 7835418 65041.73 432 428 120.5
C 12 254 649395 5387.36 432 428 120.5
C 13 3 541590 4492.43 432 428 120.5
D 8 176 3184127 19153.21 573 544 166.2
D 15 125 963613 5794.06 573 544 166.2
D 6 42 402462 2418.04 573 544 166.2

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