ASTROSAT CZTI

Data Quality Report

Orbit 53850

Creation date: 2025-09-12T10:28:49.601538
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_53850cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53850cztM0_level2_quad_clean.evt
Size (bytes)74,162,88010,523,520
Size70.7 MB 10.0 MB
Events in quadrant A411,14374,923
Events in quadrant B440,97684,015
Events in quadrant C719,88259,970
Events in quadrant D1,106,85535,532

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029381123
B030731138
C051562468
D083934633

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279
B0268
C0257
D02812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87320.229095%
B893111.231803%
C797769.535759%
D68424635.964912%

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 5410 1035 3 3 0.06% 0.29%
B 5465 1055 5 5 0.09% 0.47%
C 5198 952 82 82 1.58% 8.61%
D 5146 784 271 271 5.27% 34.57%

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 8 249 25054 1022.3 91 88 24.4
A 3 62 16365 666.51 91 88 24.4
A 4 249 4854 195.16 91 88 24.4
B 0 213 42055 1922.7 93 90 21.8
B 0 171 10457 474.98 93 90 21.8
B 5 185 6495 293.46 93 90 21.8
C 15 224 267583 11628.05 77 76 23.0
C 1 241 144271 6267.9 77 76 23.0
C 1 16 4400 187.96 77 76 23.0
D 15 93 723549 40666.78 57 55 17.8
D 8 240 50642 2843.44 57 55 17.8
D 3 224 26557 1489.65 57 55 17.8

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