ASTROSAT CZTI

Data Quality Report

Orbit 54419

Creation date: 2025-10-19T19:14:47.168266
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_54419cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54419cztM0_level2_quad_clean.evt
Size (bytes)631,779,84094,916,160
Size602.5 MB 90.5 MB
Events in quadrant A3,711,993674,611
Events in quadrant B3,431,131721,065
Events in quadrant C4,341,865610,306
Events in quadrant D11,334,301359,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162470
B0156410
C0184340
D0387450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7300290.397260%
B7300360.493151%
C73003825.232877%
D7300312442.794521%

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 7300 7300 21 21 0.29% 0.29%
B 7300 7300 30 30 0.41% 0.41%
C 7300 7300 387 387 5.30% 5.30%
D 7299 7299 3009 3009 41.22% 41.22%

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 7 206 505049 2680.44 758 739 188.1
A 11 3 72509 381.46 758 739 188.1
A 0 8 69748 366.79 758 739 188.1
B 5 185 157780 977.06 747 719 160.7
B 10 247 95226 587.92 747 719 160.7
B 0 171 69060 425.14 747 719 160.7
C 1 241 899371 4535.73 720 712 198.1
C 13 3 338252 1703.64 720 712 198.1
C 14 254 132676 666.05 720 712 198.1
D 8 176 4817506 30966.43 542 517 155.6
D 7 70 3339199 21463.01 542 517 155.6
D 15 108 384504 2468.49 542 517 155.6

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