ASTROSAT CZTI

Data Quality Report

Orbit 57515

Creation date: 2026-05-16T02:45:20.676694
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_113T09_9000006574_57515cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57515cztM0_level2_quad_clean.evt
Size (bytes)523,762,560104,814,720
Size499.5 MB 100.0 MB
Events in quadrant A3,419,320705,805
Events in quadrant B4,102,004746,377
Events in quadrant C6,497,842623,060
Events in quadrant D4,785,012575,594

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158560
B0173610
C0247100
D0198260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7509450.599281%
B75101612.143808%
C751076910.239680%
D751077210.279627%

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 7509 7509 16 16 0.21% 0.21%
B 7510 7510 65 65 0.87% 0.87%
C 7510 7510 586 586 7.80% 7.80%
D 7510 7510 372 372 4.95% 4.95%

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 13 248 117997 584.72 810 784 200.5
A 3 245 77572 383.06 810 784 200.5
A 3 14 53865 264.8 810 784 200.5
B 4 206 406823 2379.73 795 765 170.6
B 5 185 125467 730.82 795 765 170.6
B 0 245 91535 531.96 795 765 170.6
C 15 224 3382812 16671.47 749 742 202.9
C 12 252 46023 223.21 749 742 202.9
C 6 223 45338 219.83 749 742 202.9
D 8 240 1588060 7766.62 719 683 204.4
D 7 96 67227 325.58 719 683 204.4
D 5 173 62686 303.36 719 683 204.4

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