ASTROSAT CZTI

Data Quality Report

Orbit 58123

Creation date: 2026-06-26T00:16:23.922412
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_042T02_9000006586_58123cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58123cztM0_level2_quad_clean.evt
Size (bytes)883,874,88083,793,600
Size842.9 MB 79.9 MB
Events in quadrant A3,261,527704,742
Events in quadrant B8,888,559597,921
Events in quadrant C3,381,697668,054
Events in quadrant D16,639,10575,253

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148622
B0311932
C0153112
D0540932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7052570.808281%
B7052170724.205899%
C7052260.368690%
D7052633889.875213%

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 7667 7054 14 14 0.18% 0.20%
B 7667 7054 1353 1353 17.65% 19.18%
C 7667 7054 6 6 0.08% 0.09%
D 7667 7053 6012 6012 78.41% 85.24%

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 3 245 62997 315.3 798 777 197.3
A 11 3 50362 251.28 798 777 197.3
A 3 14 21189 103.44 798 777 197.3
B 5 172 3419443 21771.96 724 697 157.0
B 10 128 2264771 14418.54 724 697 157.0
B 0 79 84733 535.18 724 697 157.0
C 9 38 77637 363.33 770 760 211.6
C 15 208 68791 321.52 770 760 211.6
C 12 252 61747 288.23 770 760 211.6
D 12 110 14077908 116741.56 419 400 120.6
D 8 160 751054 6225.0 419 400 120.6
D 5 173 28521 233.2 419 400 120.6

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