ASTROSAT CZTI

Data Quality Report

Orbit 53969

Creation date: 2025-09-19T14:11:48.814650
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_53969cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53969cztM0_level2_quad_clean.evt
Size (bytes)838,177,920116,490,240
Size799.3 MB 111.1 MB
Events in quadrant A4,619,978829,911
Events in quadrant B5,387,724868,765
Events in quadrant C11,356,708540,628
Events in quadrant D8,978,221674,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200040
B0220500
C0398430
D0329880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88291511.710273%
B88293213.635746%
C8830298133.759909%
D8830121313.737259%

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 8829 8829 57 57 0.65% 0.65%
B 8829 8829 96 96 1.09% 1.09%
C 8830 8830 2508 2508 28.40% 28.40%
D 8830 8830 957 957 10.84% 10.84%

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 12 17 195234 804.59 985 959 241.5
A 7 14 139966 575.7 985 959 241.5
A 8 246 104651 429.44 985 959 241.5
B 5 250 795153 3800.78 974 939 209.0
B 0 213 249962 1191.72 974 939 209.0
B 5 185 180403 858.84 974 939 209.0
C 1 241 6861482 30559.61 821 816 224.5
C 4 5 813408 3619.55 821 816 224.5
C 12 2 140769 623.4 821 816 224.5
D 8 176 3189948 12535.51 906 869 254.4
D 6 239 1238269 4863.93 906 869 254.4
D 10 172 198330 776.17 906 869 254.4

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