ASTROSAT CZTI

Data Quality Report

Orbit 58672

Creation date: 2026-08-02T12:53:41.914751
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_004T06_9000006594_58672cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58672cztM0_level2_quad_clean.evt
Size (bytes)450,576,00097,099,200
Size429.7 MB 92.6 MB
Events in quadrant A4,005,537630,550
Events in quadrant B3,505,207688,817
Events in quadrant C3,140,329625,769
Events in quadrant D5,541,190558,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01652744
B01475453
C01371240
D02083190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62603755.990415%
B62611532.443699%
C62621201.916321%
D62525498.781190%

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 7400 6268 249 249 3.36% 3.97%
B 7405 6269 19 19 0.26% 0.30%
C 7408 6272 42 42 0.57% 0.67%
D 7396 6260 505 505 6.83% 8.07%

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 17 563341 3198.99 712 694 175.9
A 4 249 547621 3109.61 712 694 175.9
A 10 251 91229 514.75 712 694 175.9
B 2 249 182351 1210.77 705 678 150.0
B 8 234 150053 995.52 705 678 150.0
B 0 171 142358 944.24 705 678 150.0
C 14 254 170482 875.67 706 697 193.9
C 12 254 64907 331.17 706 697 193.9
C 15 147 47703 242.44 706 697 193.9
D 2 249 1355177 6959.03 686 653 194.6
D 8 240 749102 3845.25 686 653 194.6
D 8 160 369132 1893.11 686 653 194.6

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