ASTROSAT CZTI

Data Quality Report

Orbit 53414

Creation date: 2025-08-14T14:51:20.244683
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_011T09_9000006494_53414cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53414cztM0_level2_quad_clean.evt
Size (bytes)805,066,56083,508,480
Size767.8 MB 79.6 MB
Events in quadrant A4,100,537636,693
Events in quadrant B6,579,669606,649
Events in quadrant C13,131,877276,304
Events in quadrant D5,470,532542,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169302
B0242115
C0436024
D0210812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66912353.512181%
B6689110716.549559%
C6690399559.715994%
D669170510.536542%

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 7716 6692 190 190 2.46% 2.84%
B 7716 6692 724 724 9.38% 10.82%
C 7716 6691 3831 3831 49.65% 57.26%
D 7716 6692 679 679 8.80% 10.15%

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 63 889108 5174.59 691 672 171.7
A 15 174 122527 709.73 691 672 171.7
A 0 8 66547 383.68 691 672 171.7
B 4 206 2386626 17318.82 652 629 137.8
B 4 171 897963 6513.32 652 629 137.8
B 14 167 113277 817.66 652 629 137.8
C 1 241 5532103 44961.22 448 444 123.0
C 15 224 3983879 32377.28 448 444 123.0
C 9 38 872990 7092.04 448 444 123.0
D 11 245 1980614 10679.14 656 625 185.4
D 3 12 216909 1166.54 656 625 185.4
D 2 153 176184 946.88 656 625 185.4

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