ASTROSAT CZTI

Data Quality Report

Orbit 53908

Creation date: 2025-09-16T10:43:46.157459
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_53908cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53908cztM0_level2_quad_clean.evt
Size (bytes)688,256,64089,280,000
Size656.4 MB 85.1 MB
Events in quadrant A3,514,955655,562
Events in quadrant B3,511,261705,526
Events in quadrant C6,731,898567,291
Events in quadrant D11,190,823300,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154352
B0150972
C0246732
D0379572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68012133.131892%
B68011602.352595%
C680197814.380238%
D6801352351.801206%

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 7736 6802 83 83 1.07% 1.22%
B 7736 6803 33 33 0.43% 0.49%
C 7736 6803 859 859 11.10% 12.63%
D 7736 6801 3112 3112 40.23% 45.76%

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 259503 1373.47 764 743 188.4
A 0 8 171031 903.87 764 743 188.4
A 8 246 32302 167.51 764 743 188.4
B 7 0 121307 740.62 761 734 162.8
B 4 171 75363 458.41 761 734 162.8
B 10 247 54466 330.05 761 734 162.8
C 1 241 1691155 8672.82 708 700 194.9
C 15 224 1665328 8540.31 708 700 194.9
C 9 38 183317 936.91 708 700 194.9
D 8 176 5434727 39885.08 476 455 136.2
D 10 181 3062005 22470.38 476 455 136.2
D 3 12 546099 4004.78 476 455 136.2

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