ASTROSAT CZTI

Data Quality Report

Orbit 50992

Creation date: 2025-03-03T01:05:35.951852
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_001T02_9000006452_50992cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50992cztM0_level2_quad_clean.evt
Size (bytes)725,941,440106,911,360
Size692.3 MB 102.0 MB
Events in quadrant A5,603,869706,665
Events in quadrant B5,853,397741,768
Events in quadrant C6,558,306643,023
Events in quadrant D8,254,595604,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219660
B0230222
C0247990
D0299570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77842783.571429%
B77845537.104317%
C77847129.146968%
D77847649.815005%

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 7783 7783 211 211 2.71% 2.71%
B 7784 7784 369 369 4.74% 4.74%
C 7783 7783 629 629 8.08% 8.08%
D 7784 7784 716 716 9.20% 9.20%

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 547010 2742.89 806 787 199.1
A 12 3 241344 1207.97 806 787 199.1
A 4 3 241061 1206.55 806 787 199.1
B 4 81 1249875 7358.29 790 762 169.8
B 12 32 605313 3561.29 790 762 169.8
B 0 171 353193 2076.1 790 762 169.8
C 1 44 781677 3695.72 766 760 211.3
C 13 3 556722 2631.11 766 760 211.3
C 4 12 434452 2052.46 766 760 211.3
D 7 39 1624037 7588.23 760 733 213.9
D 10 181 1037348 4845.72 760 733 213.9
D 12 191 539655 2519.22 760 733 213.9

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