ASTROSAT CZTI

Data Quality Report

Orbit 57537

Creation date: 2026-05-17T13:23:54.040854
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_57537cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57537cztM0_level2_quad_clean.evt
Size (bytes)420,016,32099,374,400
Size400.6 MB 94.8 MB
Events in quadrant A3,281,846657,163
Events in quadrant B3,235,361705,459
Events in quadrant C4,387,237617,212
Events in quadrant D4,132,307571,586

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143022
B0140362
C0175602
D0168072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6567931.416172%
B65671251.903457%
C65672644.020101%
D65673284.994670%

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 7627 6568 7 7 0.09% 0.11%
B 7627 6568 19 19 0.25% 0.29%
C 7627 6568 154 154 2.02% 2.34%
D 7627 6568 252 252 3.30% 3.84%

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 3 14 300830 1659.92 735 715 180.8
A 4 249 82593 452.86 735 715 180.8
A 10 251 25728 138.35 735 715 180.8
B 4 67 68856 441.61 722 696 154.3
B 4 206 50286 321.29 722 696 154.3
B 10 247 48270 308.23 722 696 154.3
C 15 224 1198545 6227.47 710 702 192.3
C 12 252 167364 866.46 710 702 192.3
C 14 245 154586 800.03 710 702 192.3
D 15 94 523031 2633.36 704 673 198.4
D 15 142 413935 2083.37 704 673 198.4
D 8 160 129954 651.74 704 673 198.4

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