ASTROSAT CZTI

Data Quality Report

Orbit 12370

Creation date: 2024-06-27T16:26:15.538726
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/AS1G08_072T03_9000001836_12370cztM0_level2.evt modeM0/AS1G08_072T03_9000001836_12370cztM0_level2_quad_clean.evt
Size (bytes)518,964,48087,321,600
Size494.9 MB 83.3 MB
Events in quadrant A4,123,511552,906
Events in quadrant B3,709,071559,893
Events in quadrant C3,422,049551,591
Events in quadrant D4,009,592514,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168673
B0154422
C0147612
D0165542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66771201.797214%
B66771261.887075%
C6677650.973491%
D66772413.609405%

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 8468 6678 21 21 0.25% 0.31%
B 8467 6677 70 70 0.83% 1.05%
C 8468 6679 43 43 0.51% 0.64%
D 8467 6677 218 218 2.57% 3.26%

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 15 258717 1617.76 776 759 159.5
A 1 162 218640 1366.42 776 759 159.5
A 13 251 202743 1266.72 776 759 159.5
B 4 239 320039 2127.05 782 762 150.1
B 10 245 230349 1529.53 782 762 150.1
B 2 32 58936 387.56 782 762 150.1
C 15 208 472154 2670.79 756 762 176.5
C 13 61 5480 26.73 756 762 176.5
C 12 4 3226 13.96 756 762 176.5
D 1 52 1132449 6339.25 737 715 178.5
D 10 199 28095 153.37 737 715 178.5
D 2 234 23005 124.85 737 715 178.5

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