ASTROSAT CZTI

Data Quality Report

Orbit 53335

Creation date: 2025-08-08T12:24:35.268104
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_53335cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53335cztM0_level2_quad_clean.evt
Size (bytes)618,232,32098,850,240
Size589.6 MB 94.3 MB
Events in quadrant A5,070,478653,457
Events in quadrant B4,123,622713,653
Events in quadrant C8,894,591533,048
Events in quadrant D4,252,424603,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198022
B0170682
C0313542
D0173692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70203224.586895%
B70201732.464387%
C7020144720.612536%
D70201161.652422%

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 7915 7021 275 275 3.47% 3.92%
B 7915 7021 87 87 1.10% 1.24%
C 7915 7021 1257 1257 15.88% 17.90%
D 7915 7021 72 72 0.91% 1.03%

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 15 174 732171 3927.05 747 726 186.3
A 12 115 523528 2806.87 747 726 186.3
A 0 8 308967 1654.91 747 726 186.3
B 1 255 182126 1149.82 740 715 157.8
B 4 81 177174 1118.43 740 715 157.8
B 10 28 121266 764.08 740 715 157.8
C 15 224 2814955 15023.46 674 668 187.3
C 1 241 1168514 6234.29 674 668 187.3
C 15 158 955698 5098.22 674 668 187.3
D 2 62 350049 1661.24 730 698 210.3
D 1 3 179905 852.17 730 698 210.3
D 2 249 139029 657.79 730 698 210.3

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