ASTROSAT CZTI

Data Quality Report

Orbit 53966

Creation date: 2025-09-19T12:58:11.943479
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_057T04_9000006508_53966cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53966cztM0_level2_quad_clean.evt
Size (bytes)670,438,08091,926,720
Size639.4 MB 87.7 MB
Events in quadrant A3,514,672670,237
Events in quadrant B4,055,354691,008
Events in quadrant C6,364,659534,766
Events in quadrant D10,349,885408,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153032
B0170702
C0235962
D0355542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6869680.989955%
B68692944.280099%
C6869121217.644490%
D6869244335.565585%

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 7899 6870 17 17 0.22% 0.25%
B 7899 6870 134 134 1.70% 1.95%
C 7899 6870 1132 1132 14.33% 16.48%
D 7899 6870 2119 2119 26.83% 30.84%

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 15 174 133126 719.26 752 735 184.1
A 8 6 79897 430.08 752 735 184.1
A 8 248 63558 341.31 752 735 184.1
B 5 250 600400 3790.47 739 714 158.2
B 0 213 205413 1293.85 739 714 158.2
B 5 185 71579 447.92 739 714 158.2
C 1 241 3230003 17946.89 653 647 179.9
C 12 2 147689 817.17 653 647 179.9
C 13 3 114561 633.07 653 647 179.9
D 8 176 6097811 36569.02 583 558 166.7
D 6 239 734014 4398.99 583 558 166.7
D 2 165 507410 3039.91 583 558 166.7

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