ASTROSAT CZTI

Data Quality Report

Orbit 20190315_T03_091T01_9000002798_level2

Creation date: 2025-11-28T19:41:26.457635
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/AS1T03_091T01_9000002798cztM0_level2.fits modeM0/AS1T03_091T01_9000002798cztM0_level2_quad_clean.evt
Size (bytes)383,474,880381,522,240
Size365.7 MB 363.8 MB
Events in quadrant A2,350,9002,337,429
Events in quadrant B2,209,7162,222,865
Events in quadrant C2,278,1502,195,963
Events in quadrant D2,007,1642,030,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0832890
B01038370
C0871100
D0880990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08240
B08240
C08240
D08240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A402913510.871162%
B4029124256.018714%
C402915961.479239%
D402914241.052344%

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 46041 40293 0 0 0.00% 0.00%
B 46041 40192 0 0 0.00% 0.00%
C 46041 40291 0 0 0.00% 0.00%
D 46041 40278 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 1999 9.29 613 575 153.3
A 7 110 1950 8.97 613 575 153.3
A 9 19 1782 7.87 613 575 153.3
B 2 9 1830 10.89 584 557 116.9
B 14 254 1524 8.27 584 557 116.9
B 2 8 1514 8.19 584 557 116.9
C 1 81 1694 7.38 600 561 153.4
C 1 80 1663 7.18 600 561 153.4
C 12 241 1594 6.73 600 561 153.4
D 3 14 1484 6.32 571 522 152.1
D 10 190 1462 6.18 571 522 152.1
D 7 3 1425 5.94 571 522 152.1

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