ASTROSAT CZTI

Data Quality Report

Orbit 56302

Creation date: 2026-02-23T12:33:43.635736
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_049T01_9000006552_56302cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56302cztM0_level2_quad_clean.evt
Size (bytes)701,991,36084,648,960
Size669.5 MB 80.7 MB
Events in quadrant A12,362,604301,928
Events in quadrant B4,124,542670,661
Events in quadrant C4,786,115580,466
Events in quadrant D4,207,181555,868

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412351
B0168831
C0187931
D0170431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6509369756.798279%
B65093375.177447%
C65095488.419112%
D65092694.132739%

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 7604 6510 3494 3494 45.95% 53.67%
B 7604 6510 171 171 2.25% 2.63%
C 7604 6510 379 379 4.98% 5.82%
D 7604 6510 240 240 3.16% 3.69%

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 32 8564123 65958.81 515 502 129.8
A 7 64 673986 5187.32 515 502 129.8
A 4 206 236473 1817.5 515 502 129.8
B 5 185 730033 4919.19 696 669 148.3
B 5 172 387650 2609.99 696 669 148.3
B 10 247 61615 411.05 696 669 148.3
C 5 250 1398907 7591.17 675 668 184.2
C 12 252 251491 1361.74 675 668 184.2
C 15 198 209444 1133.46 675 668 184.2
D 8 160 535007 2788.59 677 647 191.6
D 2 249 482979 2517.08 677 647 191.6
D 3 144 99008 513.3 677 647 191.6

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