ASTROSAT CZTI

Data Quality Report

Orbit 57519

Creation date: 2026-05-16T09:46:51.676927
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_113T09_9000006574_57519cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57519cztM0_level2_quad_clean.evt
Size (bytes)488,589,12098,110,080
Size466.0 MB 93.6 MB
Events in quadrant A3,358,807666,087
Events in quadrant B3,442,021703,101
Events in quadrant C6,571,040531,085
Events in quadrant D4,167,510581,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152502
B0151192
C0243882
D0174132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70261081.537148%
B70261652.348420%
C7026123617.591802%
D70263314.711073%

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 8462 7028 3 3 0.04% 0.04%
B 8462 7028 29 29 0.34% 0.41%
C 8462 7028 866 866 10.23% 12.32%
D 8462 7028 230 230 2.72% 3.27%

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 13 248 228444 1196.76 767 744 190.3
A 3 14 88073 458.99 767 744 190.3
A 7 14 56158 291.25 767 744 190.3
B 4 206 137176 839.2 757 726 162.6
B 9 251 81682 497.9 757 726 162.6
B 7 252 55243 335.29 757 726 162.6
C 15 224 2590315 13985.97 682 674 185.2
C 6 223 882313 4761.5 682 674 185.2
C 14 254 225936 1216.58 682 674 185.2
D 8 240 477924 2345.43 728 696 203.5
D 0 19 417331 2047.64 728 696 203.5
D 3 12 126918 620.34 728 696 203.5

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