ASTROSAT CZTI

Data Quality Report

Orbit 57628

Creation date: 2026-05-25T09:06:56.319815
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_070T08_9000006576_57628cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57628cztM0_level2_quad_clean.evt
Size (bytes)523,393,92097,493,760
Size499.1 MB 93.0 MB
Events in quadrant A3,686,966660,745
Events in quadrant B3,399,396713,952
Events in quadrant C6,727,320517,511
Events in quadrant D5,028,789583,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154741
B0149501
C0247211
D0196441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68401211.769006%
B68411522.221897%
C6841141720.713346%
D68413525.145447%

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 7675 6841 5 5 0.07% 0.07%
B 7676 6842 32 32 0.42% 0.47%
C 7676 6842 1234 1234 16.08% 18.04%
D 7676 6842 266 266 3.47% 3.89%

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 3 14 711332 3873.25 743 722 183.5
A 7 64 53503 287.69 743 722 183.5
A 3 245 41594 222.78 743 722 183.5
B 10 247 114658 728.52 731 703 156.4
B 0 213 113245 719.49 731 703 156.4
B 0 171 57314 361.92 731 703 156.4
C 9 38 3349045 19611.58 626 617 170.7
C 15 224 417129 2439.49 626 617 170.7
C 6 223 205520 1200.11 626 617 170.7
D 8 160 1145094 5711.97 715 683 200.4
D 8 240 449079 2238.03 715 683 200.4
D 15 142 246789 1228.36 715 683 200.4

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