ASTROSAT CZTI

Data Quality Report

Orbit 51402

Creation date: 2025-03-30T17:56:50.087431
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/AS1C07_001T03_9000006456_51402cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51402cztM0_level2_quad_clean.evt
Size (bytes)2,372,382,720208,805,760
Size2.2 GB 199.1 MB
Events in quadrant A22,671,3871,402,107
Events in quadrant B11,066,7341,811,979
Events in quadrant C36,541,815433,457
Events in quadrant D16,080,7941,373,095

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0806803
B0462633
C01215493
D0612793

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18874358819.010279%
B188758294.392053%
C188751473378.055629%
D18875221511.735099%

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 19774 18877 2515 2515 12.72% 13.32%
B 19775 18878 389 389 1.97% 2.06%
C 19775 18878 9323 9323 47.15% 49.39%
D 19775 18878 2051 2051 10.37% 10.86%

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 12 3 5303489 11640.26 1848 1798 455.5
A 15 174 5237709 11495.83 1848 1798 455.5
A 12 250 1461964 3205.9 1848 1798 455.5
B 5 172 1251064 2977.97 1965 1895 419.5
B 5 173 467943 1111.04 1965 1895 419.5
B 5 185 292430 692.62 1965 1895 419.5
C 15 179 17498154 64003.35 984 975 273.4
C 4 12 10852279 39693.24 984 975 273.4
C 10 171 1228124 4488.82 984 975 273.4
D 7 60 4339081 8394.17 1855 1788 516.7
D 15 94 1166269 2253.67 1855 1788 516.7
D 3 12 853801 1648.94 1855 1788 516.7

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