ASTROSAT CZTI

Data Quality Report

Orbit 56182

Creation date: 2026-02-15T11:33:40.391798
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_083T04_9000006550_56182cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56182cztM0_level2_quad_clean.evt
Size (bytes)612,086,40097,041,600
Size583.7 MB 92.5 MB
Events in quadrant A11,047,917463,848
Events in quadrant B3,593,462723,529
Events in quadrant C3,921,163638,776
Events in quadrant D3,528,571604,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378662
B0159682
C0171642
D0159092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7288268436.827662%
B72882142.936334%
C72892483.402387%
D72891261.728632%

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 8643 7290 2056 2056 23.79% 28.20%
B 8643 7290 14 14 0.16% 0.19%
C 8644 7291 95 95 1.10% 1.30%
D 8644 7291 7 7 0.08% 0.10%

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 0 212 3565658 21151.16 675 655 168.5
A 15 32 2840229 16847.19 675 655 168.5
A 7 64 803782 4764.95 675 655 168.5
B 10 247 158168 931.6 788 758 169.0
B 4 171 101151 594.16 788 758 169.0
B 5 172 52489 306.16 788 758 169.0
C 12 252 486744 2339.07 771 762 207.8
C 6 223 226656 1087.25 771 762 207.8
C 12 254 100426 479.69 771 762 207.8
D 2 249 170196 783.27 771 737 216.3
D 11 129 70483 322.38 771 737 216.3
D 5 173 64134 293.03 771 737 216.3

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