ASTROSAT CZTI

Data Quality Report

Orbit 55436

Creation date: 2025-12-27T09:52:09.114755
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_099T01_9000006536_55436cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55436cztM0_level2_quad_clean.evt
Size (bytes)506,312,640111,919,680
Size482.9 MB 106.7 MB
Events in quadrant A4,885,816703,333
Events in quadrant B3,992,682782,591
Events in quadrant C3,782,220703,395
Events in quadrant D5,467,068649,837

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207021
B01767710
C0171941
D0220961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79035266.655700%
B79001461.848101%
C7904530.670547%
D79043073.884109%

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 7903 7903 317 317 4.01% 4.01%
B 7903 7901 78 78 0.99% 0.99%
C 7904 7904 36 36 0.46% 0.46%
D 7904 7904 263 263 3.33% 3.33%

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 4 159 1444696 7109.36 810 788 203.1
A 3 78 192287 942.88 810 788 203.1
A 4 3 30834 147.94 810 788 203.1
B 0 171 161445 939.55 812 782 171.0
B 10 247 145073 843.8 812 782 171.0
B 12 32 125399 728.75 812 782 171.0
C 14 254 205790 919.28 813 805 223.0
C 13 3 144502 644.43 813 805 223.0
C 9 38 79539 353.09 813 805 223.0
D 11 129 1226336 5450.14 797 761 224.9
D 3 12 360366 1599.17 797 761 224.9
D 8 48 302235 1340.66 797 761 224.9

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