ASTROSAT CZTI

Data Quality Report

Orbit 36564

Creation date: 2024-06-27T21:28:26.673724
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_049T02_9000005220_36564cztM0_level2.evt modeM0/AS1A11_049T02_9000005220_36564cztM0_level2_quad_clean.evt
Size (bytes)403,110,72076,757,760
Size384.4 MB 73.2 MB
Events in quadrant A2,820,932501,168
Events in quadrant B2,972,760503,943
Events in quadrant C3,108,885494,848
Events in quadrant D2,963,788471,679

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113343
B0118622
C0122302
D0118052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5026100.198965%
B5026681.352965%
C50261342.666136%
D5026310.616793%

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 7059 5027 5 5 0.07% 0.10%
B 7059 5027 27 27 0.38% 0.54%
C 7059 5027 87 87 1.23% 1.73%
D 7059 5027 23 23 0.33% 0.46%

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 196717 1497.89 663 653 130.9
A 15 223 34723 260.29 663 653 130.9
A 9 143 21173 156.77 663 653 130.9
B 5 172 322930 2662.2 649 635 121.1
B 0 189 22145 177.68 649 635 121.1
B 0 182 20405 163.3 649 635 121.1
C 0 10 322542 2212.23 634 640 145.5
C 15 214 219200 1502.03 634 640 145.5
C 14 254 86872 592.62 634 640 145.5
D 2 137 111119 702.33 644 628 157.3
D 2 153 97769 617.47 644 628 157.3
D 2 250 83607 527.45 644 628 157.3

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