ASTROSAT CZTI

Data Quality Report

Orbit 53842

Creation date: 2025-09-11T02:08:02.410496
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_057T04_9000006508_53842cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53842cztM0_level2_quad_clean.evt
Size (bytes)2,379,021,120212,068,800
Size2.2 GB 202.2 MB
Events in quadrant A13,269,9781,568,581
Events in quadrant B14,235,3101,642,681
Events in quadrant C26,145,9211,078,386
Events in quadrant D33,006,056870,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0518679
B05515418
C09028929
D011068938

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1828214347.843781%
B1827717369.498277%
C18277621834.020901%
D18278832745.557501%

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 19576 18286 1044 1044 5.33% 5.71%
B 19575 18284 1237 1237 6.32% 6.77%
C 19575 18284 5915 5915 30.22% 32.35%
D 19574 18284 8472 8472 43.28% 46.34%

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 4 249 2535917 5321.76 1915 1866 476.2
A 8 249 1836116 3852.11 1915 1866 476.2
A 0 8 668201 1399.37 1915 1866 476.2
B 5 172 4141912 10269.3 1894 1826 403.2
B 0 213 611041 1511.13 1894 1826 403.2
B 5 185 560560 1385.92 1894 1826 403.2
C 1 241 10114447 23352.93 1584 1573 433.0
C 15 224 5008960 11563.2 1584 1573 433.0
C 9 38 979307 2257.81 1584 1573 433.0
D 15 93 17685561 39844.41 1548 1476 443.8
D 10 172 4638781 10448.42 1548 1476 443.8
D 2 172 2010461 4526.49 1548 1476 443.8

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