ASTROSAT CZTI

Data Quality Report

Orbit 56097

Creation date: 2026-02-09T17:01:19.568670
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_083T03_9000006548_56097cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56097cztM0_level2_quad_clean.evt
Size (bytes)662,362,56087,163,200
Size631.7 MB 83.1 MB
Events in quadrant A11,199,274372,044
Events in quadrant B3,108,646683,158
Events in quadrant C3,778,717602,870
Events in quadrant D5,910,656513,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378692
B0139912
C0162622
D0221922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6710303445.216095%
B67101221.818182%
C67102353.502235%
D671087713.070045%

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 7690 6711 2673 2673 34.76% 39.83%
B 7690 6711 7 7 0.09% 0.10%
C 7690 6711 126 126 1.64% 1.88%
D 7690 6711 846 846 11.00% 12.61%

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 12 115 8375476 55514.92 605 590 150.9
A 15 32 170925 1129.11 605 590 150.9
A 7 64 76962 506.25 605 590 150.9
B 4 21 108857 700.85 719 692 154.3
B 5 172 35805 227.51 719 692 154.3
B 10 247 25390 160.03 719 692 154.3
C 12 254 750564 3877.06 702 695 193.4
C 12 252 113547 583.48 702 695 193.4
C 6 223 73683 377.37 702 695 193.4
D 8 129 2390797 12519.55 678 648 190.9
D 8 240 305647 1597.58 678 648 190.9
D 2 62 146749 765.27 678 648 190.9

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