ASTROSAT CZTI

Data Quality Report

Orbit 54849

Creation date: 2025-11-17T17:04:20.200871
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_039T06_9000006526_54849cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54849cztM0_level2_quad_clean.evt
Size (bytes)414,950,40081,930,240
Size395.7 MB 78.1 MB
Events in quadrant A2,629,655559,919
Events in quadrant B6,251,754483,600
Events in quadrant C2,902,238530,110
Events in quadrant D3,121,154498,824

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121751
B0227171
C0130271
D0134291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5844821.403149%
B5844133922.912389%
C58451202.053037%
D58451161.984602%

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 6914 5845 13 13 0.19% 0.22%
B 6914 5844 1104 1104 15.97% 18.89%
C 6915 5846 77 77 1.11% 1.32%
D 6915 5846 59 59 0.85% 1.01%

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 0 8 56616 360.19 631 617 155.5
A 3 14 29445 185.43 631 617 155.5
A 5 241 24210 151.75 631 617 155.5
B 5 172 3605532 29231.03 570 547 123.3
B 5 185 149748 1209.8 570 547 123.3
B 2 249 112452 907.38 570 547 123.3
C 6 223 335303 2006.37 607 601 166.8
C 12 250 37122 218.93 607 601 166.8
C 12 252 26716 156.55 607 601 166.8
D 10 181 206278 1177.74 611 583 174.7
D 3 12 112803 642.53 611 583 174.7
D 14 52 110994 632.17 611 583 174.7

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