ASTROSAT CZTI

Data Quality Report

Orbit 54709

Creation date: 2025-11-13T16:13:01.160662
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_103T01_9000006524_54709cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54709cztM0_level2_quad_clean.evt
Size (bytes)543,407,040122,016,960
Size518.2 MB 116.4 MB
Events in quadrant A4,110,161807,109
Events in quadrant B5,130,375845,857
Events in quadrant C5,663,898718,096
Events in quadrant D4,540,256724,205

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187251
B0215441
C0232041
D0200022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8632730.845690%
B86323163.660797%
C86326367.367933%
D8631780.903719%

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 9172 8633 21 21 0.23% 0.24%
B 9172 8633 139 139 1.52% 1.61%
C 9172 8633 355 355 3.87% 4.11%
D 9171 8632 56 56 0.61% 0.65%

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 11 3 154054 673.55 917 893 227.4
A 0 8 143603 627.59 917 893 227.4
A 3 14 79378 345.15 917 893 227.4
B 2 249 880720 4498.4 906 873 195.6
B 4 171 328260 1673.83 906 873 195.6
B 10 247 85304 431.67 906 873 195.6
C 15 219 1415884 5926.92 868 861 238.7
C 4 5 231631 966.6 868 861 238.7
C 13 3 209752 874.95 868 861 238.7
D 3 12 375018 1454.87 890 846 257.2
D 11 129 351874 1364.88 890 846 257.2
D 15 43 86592 333.4 890 846 257.2

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