ASTROSAT CZTI

Data Quality Report

Orbit 59194

Creation date: 2026-09-07T11:25:11.637697
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/AS1T05_271T01_9000006604_59194cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59194cztM0_level2_quad_clean.evt
Size (bytes)517,685,760110,822,400
Size493.7 MB 105.7 MB
Events in quadrant A3,459,452744,850
Events in quadrant B4,303,397788,458
Events in quadrant C3,941,718712,538
Events in quadrant D6,902,916611,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152742
B0176152
C0165272
D0255102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71591061.480654%
B71602193.058659%
C7160951.326816%
D71606799.483240%

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 9409 7161 8 8 0.09% 0.11%
B 9410 7162 61 61 0.65% 0.85%
C 9410 7162 14 14 0.15% 0.20%
D 9410 7162 465 465 4.94% 6.49%

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 24 115313 560.96 835 812 204.1
A 10 251 55422 267.54 835 812 204.1
A 15 233 43923 211.21 835 812 204.1
B 4 171 350601 1992.92 819 787 175.5
B 5 236 273200 1551.96 819 787 175.5
B 10 247 123121 696.95 819 787 175.5
C 3 233 403800 1803.64 819 812 223.4
C 12 252 99562 441.97 819 812 223.4
C 14 254 70641 312.53 819 812 223.4
D 12 110 2368084 10879.0 768 737 217.6
D 2 249 655996 3011.2 768 737 217.6
D 8 160 520463 2388.37 768 737 217.6

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

TCT plots

Parameter TCT0 TCT_healed
Tct