ASTROSAT CZTI

Data Quality Report

Orbit 56289

Creation date: 2026-02-22T15:23:39.067855
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_049T01_9000006552_56289cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56289cztM0_level2_quad_clean.evt
Size (bytes)762,776,64085,043,520
Size727.4 MB 81.1 MB
Events in quadrant A11,885,280365,288
Events in quadrant B3,498,582692,930
Events in quadrant C7,198,580510,961
Events in quadrant D5,153,777556,325

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398172
B0145792
C0258302
D0198242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6447320749.744067%
B64472093.241818%
C6447144322.382503%
D64475067.848612%

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 7566 6446 3029 3029 40.03% 46.99%
B 7567 6447 27 27 0.36% 0.42%
C 7566 6446 1222 1222 16.15% 18.96%
D 7567 6447 396 396 5.23% 6.14%

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 8 176 3127792 21053.41 597 583 148.5
A 15 32 2958013 19910.4 597 583 148.5
A 4 95 1643929 11063.55 597 583 148.5
B 5 185 144251 950.97 714 690 151.0
B 0 63 138330 911.75 714 690 151.0
B 0 213 118498 780.38 714 690 151.0
C 12 254 3041417 17298.62 649 644 175.8
C 5 250 725998 4126.46 649 644 175.8
C 12 252 436152 2477.56 649 644 175.8
D 12 31 1429050 7344.49 692 659 194.5
D 2 249 438279 2250.15 692 659 194.5
D 5 32 129314 661.52 692 659 194.5

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