ASTROSAT CZTI

Data Quality Report

Orbit 36575

Creation date: 2024-06-27T21:28:38.475031
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/AS1A11_097T17_9000005222_36575cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36575cztM0_level2_quad_clean.evt
Size (bytes)446,408,64052,413,120
Size425.7 MB 50.0 MB
Events in quadrant A2,774,105308,656
Events in quadrant B2,816,454309,486
Events in quadrant C3,716,772300,614
Events in quadrant D3,840,121284,377

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116343
B0118612
C0145512
D0151452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5477110.200840%
B5477300.547745%
C54771562.848275%
D54772083.797699%

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 7180 5478 2 2 0.03% 0.04%
B 7180 5478 14 14 0.19% 0.26%
C 7180 5478 135 135 1.88% 2.46%
D 7180 5478 153 153 2.13% 2.79%

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 10 83 199148 1519.28 647 636 130.7
A 15 223 51763 391.29 647 636 130.7
A 9 143 12350 89.65 647 636 130.7
B 5 255 161849 1319.2 641 625 122.2
B 0 213 34943 280.8 641 625 122.2
B 0 190 21333 169.44 641 625 122.2
C 0 10 756222 5178.87 622 628 145.9
C 15 214 233448 1595.76 622 628 145.9
C 14 254 168320 1149.37 622 628 145.9
D 12 235 639500 4273.5 617 602 149.5
D 13 249 300414 2005.4 617 602 149.5
D 12 16 116991 778.51 617 602 149.5

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