ASTROSAT CZTI

Data Quality Report

Orbit 53897

Creation date: 2025-09-14T15:57:31.916369
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_53897cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53897cztM0_level2_quad_clean.evt
Size (bytes)813,337,92082,200,960
Size775.7 MB 78.4 MB
Events in quadrant A3,542,410657,377
Events in quadrant B4,215,118692,822
Events in quadrant C6,142,179569,499
Events in quadrant D15,664,78182,603

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156661
B0171970
C0230780
D0513060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69801141.633238%
B69821782.549413%
C698280311.501003%
D6982619588.728158%

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 6981 6981 83 83 1.19% 1.19%
B 6982 6982 84 84 1.20% 1.20%
C 6982 6982 658 658 9.42% 9.42%
D 6981 6981 4968 4968 71.16% 71.16%

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 364326 1935.31 757 737 187.9
A 4 249 44156 231.11 757 737 187.9
A 3 114 40414 211.19 757 737 187.9
B 7 0 519600 3246.11 741 715 159.8
B 0 213 324893 2028.04 741 715 159.8
B 4 171 98298 610.47 741 715 159.8
C 15 224 2517181 12994.27 696 689 193.7
C 13 3 449635 2318.2 696 689 193.7
C 15 147 215781 1110.66 696 689 193.7
D 8 176 14044979 182145.77 266 254 77.1
D 6 239 165364 2141.31 266 254 77.1
D 12 6 121766 1575.89 266 254 77.1

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