ASTROSAT CZTI

Data Quality Report

Orbit 55916

Creation date: 2026-01-30T21:10:11.225585
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_030T02_9000006544_55916cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55916cztM0_level2_quad_clean.evt
Size (bytes)523,733,760109,975,680
Size499.5 MB 104.9 MB
Events in quadrant A3,440,876722,932
Events in quadrant B3,702,450782,256
Events in quadrant C4,280,115689,171
Events in quadrant D7,347,729584,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162240
B0169850
C0187600
D0273200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A792380.100972%
B7924450.567895%
C79242403.028773%
D792499112.506310%

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 7923 7923 2 2 0.03% 0.03%
B 7924 7924 5 5 0.06% 0.06%
C 7924 7924 203 203 2.56% 2.56%
D 7924 7924 890 890 11.23% 11.23%

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 7 64 64658 311.11 830 808 205.2
A 4 3 33088 157.28 830 808 205.2
A 12 115 32537 154.6 830 808 205.2
B 7 0 174078 968.91 828 794 178.8
B 2 249 149481 831.38 828 794 178.8
B 7 252 32113 175.12 828 794 178.8
C 12 252 579476 2621.26 810 801 220.8
C 15 199 369400 1669.66 810 801 220.8
C 13 3 79227 355.25 810 801 220.8
D 11 129 3431944 16082.8 761 728 213.3
D 12 16 597735 2798.29 761 728 213.3
D 7 96 150370 701.4 761 728 213.3

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