ASTROSAT CZTI

Data Quality Report

Orbit 04119

Creation date: 2024-06-27T14:37:40.188650
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/AS1G05_167T01_9000000528_04119cztM0_level2.evt modeM0/AS1G05_167T01_9000000528_04119cztM0_level2_quad_clean.evt
Size (bytes)1,580,319,360251,982,720
Size1.5 GB 240.3 MB
Events in quadrant A12,465,6931,528,575
Events in quadrant B11,245,4131,532,147
Events in quadrant C10,541,0381,521,293
Events in quadrant D12,048,3771,461,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04682
B04682
C04682
D04680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052282120
B048244104
C047423104
D052133109

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230854131.789041%
B230863661.585376%
C230862471.069913%
D230875872.542556%

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 25366 23095 26 26 0.10% 0.11%
B 25365 23096 9 9 0.04% 0.04%
C 25365 23097 3 3 0.01% 0.01%
D 25365 23098 282 282 1.11% 1.22%

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 0 199 1478947 2667.29 2715 2659 553.5
A 0 226 156729 278.37 2715 2659 553.5
A 0 50 105148 185.17 2715 2659 553.5
B 15 204 368722 698.21 2742 2682 524.3
B 7 252 97427 180.72 2742 2682 524.3
B 3 0 61996 113.14 2742 2682 524.3
C 9 144 133874 214.44 2643 2664 611.9
C 10 65 27872 41.2 2643 2664 611.9
C 8 128 27343 40.33 2643 2664 611.9
D 2 37 620628 982.78 2613 2540 628.9
D 13 239 616092 975.56 2613 2540 628.9
D 13 46 494542 782.3 2613 2540 628.9

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