ASTROSAT CZTI

Data Quality Report

Orbit 57411

Creation date: 2026-05-09T02:42:17.776962
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_102T01_9000006572_57411cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57411cztM0_level2_quad_clean.evt
Size (bytes)665,997,12088,801,920
Size635.1 MB 84.7 MB
Events in quadrant A8,942,554527,438
Events in quadrant B3,699,492643,989
Events in quadrant C7,499,737493,959
Events in quadrant D3,962,615529,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315382
B0161662
C0273402
D0169446

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7080149121.059322%
B7080951.341808%
C7080132518.714689%
D70791682.373217%

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 8008 7353 1051 1051 13.12% 14.29%
B 8008 7354 28 28 0.35% 0.38%
C 8008 7352 1095 1095 13.67% 14.89%
D 8007 7353 114 114 1.42% 1.55%

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 0 12 3651357 21583.35 684 668 169.1
A 10 251 2565491 15163.56 684 668 169.1
A 13 248 37398 217.15 684 668 169.1
B 0 216 397617 2524.84 739 710 157.2
B 10 247 65954 415.04 739 710 157.2
B 0 245 63003 396.26 739 710 157.2
C 15 224 3318164 18515.72 653 647 179.2
C 12 249 864502 4821.35 653 647 179.2
C 12 252 310642 1730.14 653 647 179.2
D 8 240 295994 1473.23 709 675 200.5
D 2 249 227476 1131.42 709 675 200.5
D 3 224 174076 865.03 709 675 200.5

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