ASTROSAT CZTI

Data Quality Report

Orbit 58208

Creation date: 2026-07-01T17:11:21.506002
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_042T02_9000006586_58208cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58208cztM0_level2_quad_clean.evt
Size (bytes)463,737,60098,280,000
Size442.3 MB 93.7 MB
Events in quadrant A3,145,202665,692
Events in quadrant B6,010,789634,882
Events in quadrant C3,298,494631,390
Events in quadrant D4,202,728588,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139272
B0222652
C0144192
D0169022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65421632.491593%
B654296914.811984%
C65421462.231733%
D65422433.714460%

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 7632 6542 32 32 0.42% 0.49%
B 7632 6542 699 699 9.16% 10.68%
C 7632 6542 19 19 0.25% 0.29%
D 7632 6542 124 124 1.62% 1.90%

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 103914 551.77 759 741 187.0
A 3 245 77620 411.15 759 741 187.0
A 4 3 15591 79.42 759 741 187.0
B 2 249 1745852 11563.21 705 678 150.9
B 10 128 895071 5926.08 705 678 150.9
B 10 247 159487 1052.24 705 678 150.9
C 15 208 196162 970.91 735 727 201.3
C 12 252 145897 721.2 735 727 201.3
C 6 223 36851 179.46 735 727 201.3
D 12 110 663554 3230.46 731 699 205.2
D 8 160 196849 955.95 731 699 205.2
D 12 248 99742 482.69 731 699 205.2

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