ASTROSAT CZTI

Data Quality Report

Orbit 20210508_A10_053T14_9000004362_level2

Creation date: 2025-12-25T05:29:17.740131
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/AS1A10_053T14_9000004362cztM0_level2.fits modeM0/AS1A10_053T14_9000004362cztM0_level2_quad_clean.evt
Size (bytes)529,050,240449,317,440
Size504.5 MB 428.5 MB
Events in quadrant A3,307,7502,621,065
Events in quadrant B3,109,8702,603,074
Events in quadrant C3,206,6542,499,505
Events in quadrant D2,789,7262,275,366

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010700
B010700
C010700
D010700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01123890
B01597190
C01148440
D01296340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525717051.341044%
B5257114122.685891%
C5257114642.784805%
D5257128925.501132%

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 60131 52570 0 0 0.00% 0.00%
B 60131 52564 0 0 0.00% 0.00%
C 60131 52566 0 0 0.00% 0.00%
D 60131 52559 0 0 0.00% 0.00%

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 29 3237 11.44 861 809 212.2
A 7 110 2577 8.33 861 809 212.2
A 9 19 2499 7.96 861 809 212.2
B 2 9 2493 10.47 822 786 163.0
B 3 80 2129 8.24 822 786 163.0
B 5 255 2085 7.97 822 786 163.0
C 12 241 2245 6.8 848 796 213.0
C 3 126 2205 6.62 848 796 213.0
C 3 187 2131 6.27 848 796 213.0
D 15 46 2048 6.26 796 726 211.3
D 3 14 1951 5.8 796 726 211.3
D 10 189 1949 5.79 796 726 211.3

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