ASTROSAT CZTI

Data Quality Report

Orbit 53279

Creation date: 2025-08-04T11:18:38.806867
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/AS1C09_011T08_9000006492_53279cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53279cztM0_level2_quad_clean.evt
Size (bytes)528,978,24091,149,120
Size504.5 MB 86.9 MB
Events in quadrant A3,453,371622,145
Events in quadrant B4,124,095659,423
Events in quadrant C7,701,231469,084
Events in quadrant D3,805,644562,977

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147481
B0166621
C0273451
D0159341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63961362.126329%
B63962153.361476%
C6395149523.377639%
D63951622.533229%

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 7441 6396 70 70 0.94% 1.09%
B 7440 6395 140 140 1.88% 2.19%
C 7440 6395 1434 1434 19.27% 22.42%
D 7440 6395 122 122 1.64% 1.91%

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 3 14 202671 1180.44 680 663 171.1
A 4 249 128550 747.31 680 663 171.1
A 3 62 102018 592.27 680 663 171.1
B 10 28 389455 2709.93 672 649 143.5
B 2 249 326519 2271.27 672 649 143.5
B 4 81 236224 1641.93 672 649 143.5
C 1 241 1855369 11210.62 596 590 165.4
C 10 22 1036057 6258.55 596 590 165.4
C 15 224 956367 5776.89 596 590 165.4
D 3 12 328168 1745.56 662 634 187.6
D 11 245 189643 1007.3 662 634 187.6
D 6 239 142263 754.8 662 634 187.6

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