ASTROSAT CZTI

Data Quality Report

Orbit 56347

Creation date: 2026-02-26T12:20:27.178482
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_56347cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56347cztM0_level2_quad_clean.evt
Size (bytes)784,958,40079,614,720
Size748.6 MB 75.9 MB
Events in quadrant A5,592,525576,842
Events in quadrant B4,862,227642,521
Events in quadrant C8,097,743399,002
Events in quadrant D10,026,044360,624

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208371
B0186691
C0283311
D0340261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61795048.156660%
B61793936.360252%
C6179220335.653018%
D6179244939.634245%

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 7329 6179 389 389 5.31% 6.30%
B 7329 6180 206 206 2.81% 3.33%
C 7329 6180 1693 1693 23.10% 27.39%
D 7329 6179 2209 2209 30.14% 35.75%

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 7 64 920475 5631.85 664 649 163.3
A 3 14 639565 3911.91 664 649 163.3
A 4 95 365356 2233.0 664 649 163.3
B 5 172 1200305 8515.71 672 648 140.9
B 5 185 269202 1906.32 672 648 140.9
B 4 171 265917 1883.0 672 648 140.9
C 15 230 3677897 24589.67 548 543 149.5
C 12 254 1779897 11898.15 548 543 149.5
C 13 3 300531 2005.95 548 543 149.5
D 2 62 5067369 30574.17 578 550 165.7
D 12 3 876150 5283.54 578 550 165.7
D 6 239 639935 3858.17 578 550 165.7

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