ASTROSAT CZTI

Data Quality Report

Orbit 55463

Creation date: 2025-12-29T01:02:47.086109
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_099T01_9000006536_55463cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55463cztM0_level2_quad_clean.evt
Size (bytes)496,759,68099,541,440
Size473.7 MB 94.9 MB
Events in quadrant A3,568,049669,469
Events in quadrant B3,546,532713,207
Events in quadrant C5,833,713563,703
Events in quadrant D4,898,588581,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157213
B0156713
C0223033
D0196086

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69671131.621932%
B69671081.550165%
C696790112.932396%
D69663925.627333%

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 7812 6969 69 69 0.88% 0.99%
B 7812 6969 30 30 0.38% 0.43%
C 7812 6969 739 739 9.46% 10.60%
D 7811 6968 322 322 4.12% 4.62%

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 78 393968 2157.87 742 720 182.2
A 0 8 158560 866.11 742 720 182.2
A 4 3 40616 218.92 742 720 182.2
B 5 236 244508 1556.78 731 704 156.6
B 0 171 167793 1066.93 731 704 156.6
B 10 247 75725 479.04 731 704 156.6
C 9 38 2041709 10885.9 686 675 187.5
C 13 3 1014227 5405.8 686 675 187.5
C 1 16 31137 162.47 686 675 187.5
D 11 129 721746 3585.65 711 680 201.1
D 8 160 439519 2182.22 711 680 201.1
D 6 239 286064 1419.13 711 680 201.1

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