ASTROSAT CZTI

Data Quality Report

Orbit 02951

Creation date: 2024-06-27T14:22:37.478037
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_238T04_9000000416_02951cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02951cztM0_level2_common_clean.evt
Size (bytes)472,985,28061,430,400
Size451.1 MB 58.6 MB
Events in quadrant A2,719,201381,475
Events in quadrant B2,790,542381,312
Events in quadrant C2,734,154372,801
Events in quadrant D5,720,250353,521

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115623
B0116002
C0117032
D0206632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5317771.448185%
B5317440.827534%
C5317140.263306%
D531779815.008463%

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 7442 5318 58 58 0.78% 1.09%
B 7442 5318 27 27 0.36% 0.51%
C 7442 5318 10 10 0.13% 0.19%
D 7442 5318 654 654 8.79% 12.30%

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 14 238 150488 1228.9 607 595 122.0
A 14 249 98405 801.9 607 595 122.0
A 0 50 48513 392.86 607 595 122.0
B 2 249 174376 1474.74 616 604 117.8
B 3 27 76659 645.45 616 604 117.8
B 0 205 46202 386.97 616 604 117.8
C 1 192 153084 1118.47 586 586 136.3
C 6 80 104884 764.95 586 586 136.3
C 0 219 84088 612.43 586 586 136.3
D 7 80 2163407 16182.64 554 540 133.7
D 14 113 367550 2745.98 554 540 133.7
D 1 31 324244 2421.96 554 540 133.7

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
Veto Counter