ASTROSAT CZTI

Data Quality Report

Orbit 41899

Creation date: 2024-06-27T22:34:10.002359
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/AS1A12_099T01_9000005716_41899cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41899cztM0_level2_quad_clean.evt
Size (bytes)364,780,80090,717,120
Size347.9 MB 86.5 MB
Events in quadrant A3,827,877597,752
Events in quadrant B2,814,260626,613
Events in quadrant C3,232,979576,086
Events in quadrant D3,190,069552,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149563
B0123822
C0132432
D0134822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56232073.681309%
B5623731.298239%
C56232754.890628%
D56231121.991819%

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 7026 5624 170 170 2.42% 3.02%
B 7026 5624 48 48 0.68% 0.85%
C 7026 5624 258 258 3.67% 4.59%
D 7026 5624 131 131 1.86% 2.33%

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 10 83 540744 4349.02 601 590 124.2
A 6 10 540732 4348.92 601 590 124.2
A 14 24 355991 2861.49 601 590 124.2
B 5 255 396646 3371.13 600 582 117.5
B 0 190 38514 322.86 600 582 117.5
B 12 111 15071 123.32 600 582 117.5
C 0 10 763889 5670.72 570 573 134.6
C 15 214 217374 1610.63 570 573 134.6
C 0 15 26670 193.88 570 573 134.6
D 10 199 303907 2112.0 585 568 143.6
D 12 6 228266 1585.35 585 568 143.6
D 13 249 116379 806.33 585 568 143.6

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