ASTROSAT CZTI

Data Quality Report

Orbit 41321

Creation date: 2024-06-27T22:27:32.095588
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/AS1A12_025T16_9000005650_41321cztM0_level2.fits modeM0/AS1A12_025T16_9000005650_41321cztM0_level2_quad_clean.evt
Size (bytes)380,174,40097,790,400
Size362.6 MB 93.3 MB
Events in quadrant A3,156,840662,995
Events in quadrant B3,058,407672,097
Events in quadrant C3,251,974622,905
Events in quadrant D4,138,121583,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129963
B0131212
C0134322
D0164912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6007110.183120%
B6007600.998835%
C60071953.246213%
D60071943.229566%

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 7289 6008 3 3 0.04% 0.05%
B 7289 6008 34 34 0.47% 0.57%
C 7289 6008 178 178 2.44% 2.96%
D 7289 6008 159 159 2.18% 2.65%

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 545047 3929.91 667 654 138.5
A 13 6 12475 85.33 667 654 138.5
A 12 189 11220 76.27 667 654 138.5
B 5 255 339057 2620.92 658 640 129.1
B 0 190 83804 644.08 658 640 129.1
B 0 155 34444 261.8 658 640 129.1
C 0 10 508688 3379.79 637 640 150.3
C 15 214 252751 1677.17 637 640 150.3
C 15 159 7440 45.24 637 640 150.3
D 2 120 580954 3668.32 644 625 158.2
D 2 249 327673 2067.3 644 625 158.2
D 13 249 303362 1913.63 644 625 158.2

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