ASTROSAT CZTI

Data Quality Report

Orbit 57354

Creation date: 2026-05-05T06:41:41.688134
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_102T01_9000006572_57354cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57354cztM0_level2_quad_clean.evt
Size (bytes)520,695,360101,839,680
Size496.6 MB 97.1 MB
Events in quadrant A3,553,606673,073
Events in quadrant B4,316,293711,485
Events in quadrant C5,401,449592,632
Events in quadrant D5,394,509561,203

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164912
B0184662
C0217582
D0214802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139966466824232139964394242094
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7832430.549030%
B78322403.064351%
C78325186.613892%
D78324515.758427%

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 8120 8106 21 21 0.26% 0.26%
B 8120 8106 115 115 1.42% 1.42%
C 8120 8106 411 411 5.06% 5.07%
D 8120 8106 385 385 4.74% 4.75%

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 3 67125 317.96 849 827 208.5
A 3 14 58917 278.6 849 827 208.5
A 0 12 52690 248.73 849 827 208.5
B 5 185 408333 2294.01 832 799 177.7
B 1 223 317810 1784.46 832 799 177.7
B 7 252 87484 487.95 832 799 177.7
C 15 224 1387942 6435.34 792 785 215.6
C 12 252 262519 1214.24 792 785 215.6
C 13 3 252714 1168.76 792 785 215.6
D 8 240 976023 4382.93 794 759 222.5
D 2 249 820290 3683.05 794 759 222.5
D 7 96 91675 408.58 794 759 222.5

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