ASTROSAT CZTI

Data Quality Report

Orbit 54467

Creation date: 2025-10-23T11:51:08.706795
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_126T19_9000006518_54467cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54467cztM0_level2_quad_clean.evt
Size (bytes)2,271,058,560214,130,880
Size2.1 GB 204.2 MB
Events in quadrant A9,047,4231,666,632
Events in quadrant B10,153,0061,771,374
Events in quadrant C22,898,6861,271,618
Events in quadrant D40,555,411510,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404553
B0430293
C0807053
D01330253

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183204332.363537%
B183214422.412532%
C18321420122.929971%
D183211272269.439441%

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 19800 18322 204 204 1.03% 1.11%
B 19801 18321 108 108 0.55% 0.59%
C 19801 18321 3727 3727 18.82% 20.34%
D 19801 18321 12672 12672 64.00% 69.17%

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 667399 1404.19 1937 1891 473.9
A 0 8 302724 634.74 1937 1891 473.9
A 8 9 166401 347.11 1937 1891 473.9
B 7 0 1484475 3641.19 1912 1843 407.2
B 5 185 464314 1135.78 1912 1843 407.2
B 0 213 316519 772.81 1912 1843 407.2
C 7 64 10084649 21830.34 1703 1688 461.9
C 12 2 3287202 7113.38 1703 1688 461.9
C 4 5 2114000 4573.31 1703 1688 461.9
D 8 176 27983577 89276.92 1106 1056 313.4
D 10 199 6531713 20835.76 1106 1056 313.4
D 7 70 555520 1768.99 1106 1056 313.4

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