ASTROSAT CZTI

Data Quality Report

Orbit 11712

Creation date: 2024-06-27T16:17:14.862993
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/AS1A04_227T01_9000001724_11712cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11712cztM0_level2_quad_clean.evt
Size (bytes)380,983,68065,275,200
Size363.3 MB 62.3 MB
Events in quadrant A2,783,684415,466
Events in quadrant B2,893,944411,876
Events in quadrant C2,197,425422,223
Events in quadrant D3,339,914393,229

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112681
B0115311
C098051
D0128391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47471272.675374%
B47472154.529176%
C4747410.863703%
D47471843.876132%

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 5878 4750 5 5 0.09% 0.11%
B 5878 4750 95 95 1.62% 2.00%
C 5878 4750 0 0 0.00% 0.00%
D 5878 4750 118 118 2.01% 2.48%

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 323191 2731.18 579 568 118.1
A 1 162 73428 616.8 579 568 118.1
A 1 178 40079 334.48 579 568 118.1
B 4 239 512717 4543.49 574 560 112.7
B 15 204 33229 289.82 574 560 112.7
B 3 64 28359 246.61 574 560 112.7
C 13 61 4171 27.37 563 567 131.7
C 14 234 2649 15.81 563 567 131.7
C 8 222 1784 9.24 563 567 131.7
D 8 195 367994 2701.63 555 538 136.0
D 7 80 365680 2684.61 555 538 136.0
D 4 95 245807 1803.28 555 538 136.0

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