ASTROSAT CZTI

Data Quality Report

Orbit 52259

Creation date: 2025-07-21T18:51:50.197526
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_9000006472_52259cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52259cztM0_level2_quad_clean.evt
Size (bytes)2,339,524,800191,301,120
Size2.2 GB 182.4 MB
Events in quadrant A10,589,2141,597,267
Events in quadrant B24,128,3881,323,544
Events in quadrant C36,373,795185,406
Events in quadrant D14,112,1681,438,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045025448
B084725326
C01214721051
D055460671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03662
B03650
C03664
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181004982.751381%
B18115509228.109302%
C180671640790.811978%
D180848264.567574%

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 19857 18131 331 331 1.67% 1.83%
B 19857 18150 3381 3381 17.03% 18.63%
C 19857 18091 9114 9114 45.90% 50.38%
D 19858 18111 738 738 3.72% 4.07%

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 3 79 989638 2143.61 1845 1803 460.8
A 4 249 614288 1329.1 1845 1803 460.8
A 11 3 376731 813.6 1845 1803 460.8
B 12 32 8069282 22876.05 1650 1586 352.7
B 10 254 2790158 7907.03 1650 1586 352.7
B 7 0 2701922 7656.84 1650 1586 352.7
C 15 158 21744687 96447.9 794 784 225.4
C 15 224 5059407 22438.18 794 784 225.4
C 15 178 2655213 11774.06 794 784 225.4
D 11 176 1959306 3898.01 1768 1688 502.2
D 6 42 1203036 2392.13 1768 1688 502.2
D 8 176 1101391 2189.73 1768 1688 502.2

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