ASTROSAT CZTI

Data Quality Report

Orbit 55302

Creation date: 2025-12-18T05:10:12.835102
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_009T01_9000006534_55302cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55302cztM0_level2_quad_clean.evt
Size (bytes)390,628,80088,943,040
Size372.5 MB 84.8 MB
Events in quadrant A3,123,422579,032
Events in quadrant B2,955,731623,251
Events in quadrant C3,357,530548,130
Events in quadrant D4,513,607486,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142792
B0138192
C0150762
D0182022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6546600.916590%
B6546450.687443%
C65451412.154316%
D65452543.880825%

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 7911 6822 53 53 0.67% 0.78%
B 7911 6822 8 8 0.10% 0.12%
C 7910 6821 122 122 1.54% 1.79%
D 7910 6815 276 276 3.49% 4.05%

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 8 323877 1922.9 680 663 168.1
A 3 78 29049 168.88 680 663 168.1
A 12 18 28052 162.95 680 663 168.1
B 0 199 87551 599.53 677 652 144.9
B 7 252 47194 321.1 677 652 144.9
B 9 254 39286 266.54 677 652 144.9
C 9 38 174379 943.48 670 664 184.1
C 14 254 163978 886.99 670 664 184.1
C 13 3 139062 751.66 670 664 184.1
D 11 129 872466 4672.07 659 631 186.6
D 11 176 530237 2838.1 659 631 186.6
D 6 239 276488 1478.29 659 631 186.6

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