ASTROSAT CZTI

Data Quality Report

Orbit 03250

Creation date: 2024-06-27T14:26:43.322903
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_104T01_9000000440_03250cztM0_level2.evt modeM0/AS1G05_104T01_9000000440_03250cztM0_level2_quad_clean.evt
Size (bytes)399,951,36069,010,560
Size381.4 MB 65.8 MB
Events in quadrant A2,641,269436,269
Events in quadrant B3,035,744433,107
Events in quadrant C2,647,421430,712
Events in quadrant D3,413,264404,296

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117192
B0124151
C0116731
D0140381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55112454.445654%
B55112414.373072%
C55111673.030303%
D55112724.935583%

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 5526 5512 13 13 0.24% 0.24%
B 5526 5512 1 1 0.02% 0.02%
C 5526 5512 8 8 0.14% 0.15%
D 5526 5512 168 168 3.04% 3.05%

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 0 118 76841 561.36 654 640 135.7
A 0 50 27205 195.7 654 640 135.7
A 0 226 13752 96.59 654 640 135.7
B 15 204 426525 3278.8 665 649 129.9
B 2 249 17059 126.34 665 649 129.9
B 3 209 11266 81.74 665 649 129.9
C 14 223 51807 337.8 640 644 151.5
C 14 48 38244 248.25 640 644 151.5
C 15 208 20812 133.16 640 644 151.5
D 13 114 798808 5101.49 631 611 156.5
D 13 239 78211 495.96 631 611 156.5
D 13 223 78010 494.68 631 611 156.5

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
Veto Counter