ASTROSAT CZTI

Data Quality Report

Orbit 10825

Creation date: 2024-06-27T16:04:13.222011
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/AS1A03_086T01_9000001568_10825cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10825cztM0_level2_quad_clean.evt
Size (bytes)621,207,36081,659,520
Size592.4 MB 77.9 MB
Events in quadrant A5,489,589499,164
Events in quadrant B5,465,141501,980
Events in quadrant C3,317,350514,831
Events in quadrant D4,089,684491,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209923
B0206632
C0139782
D0163852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66783855.765199%
B667868810.302486%
C6678540.808625%
D66791362.036233%

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 7898 6679 222 222 2.81% 3.32%
B 7898 6679 415 415 5.25% 6.21%
C 7898 6680 0 0 0.00% 0.00%
D 7899 6680 57 57 0.72% 0.85%

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 8 5 1984730 11345.47 865 849 174.9
A 13 251 139156 790.95 865 849 174.9
A 15 174 29325 162.85 865 849 174.9
B 4 239 1812718 11337.09 845 830 159.8
B 10 245 200023 1246.36 845 830 159.8
B 0 214 44136 270.97 845 830 159.8
C 13 61 6288 27.75 850 858 195.7
C 14 234 3669 14.36 850 858 195.7
C 3 202 2216 6.94 850 858 195.7
D 8 195 307906 1499.38 851 832 204.8
D 1 52 231329 1125.47 851 832 204.8
D 5 222 75835 366.22 851 832 204.8

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