ASTROSAT CZTI

Data Quality Report

Orbit 20200319_A07_160T05_9000003580_level2

Creation date: 2025-12-10T05:03:12.039491
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/AS1A07_160T05_9000003580cztM0_level2.fits modeM0/AS1A07_160T05_9000003580cztM0_level2_quad_clean.evt
Size (bytes)501,946,560436,124,160
Size478.7 MB 415.9 MB
Events in quadrant A3,175,0002,645,100
Events in quadrant B3,021,5242,622,069
Events in quadrant C2,974,8362,341,586
Events in quadrant D2,638,6242,206,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010060
B010060
C010060
D010060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01029490
B01030470
C01143610
D01207670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494267441.505281%
B494268341.687371%
C4942618523.747016%
D4942610052.033343%

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 57486 49422 0 0 0.00% 0.00%
B 57486 49421 0 0 0.00% 0.00%
C 57486 49396 0 0 0.00% 0.00%
D 57486 49423 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 2993 10.93 826 780 202.4
A 7 110 2452 8.26 826 780 202.4
A 9 19 2401 8.01 826 780 202.4
B 2 9 2384 10.4 800 768 155.4
B 2 8 2023 8.08 800 768 155.4
B 5 128 1990 7.87 800 768 155.4
C 12 241 2073 6.66 786 738 200.4
C 3 126 2065 6.62 786 738 200.4
C 12 250 1989 6.24 786 738 200.4
D 3 14 1909 6.04 754 687 202.2
D 15 46 1884 5.92 754 687 202.2
D 6 231 1873 5.87 754 687 202.2

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