ASTROSAT CZTI

Data Quality Report

Orbit 36614

Creation date: 2024-06-27T21:29:12.192985
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/AS1A10_073T02_9000005226_36614cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36614cztM0_level2_quad_clean.evt
Size (bytes)869,284,80067,014,720
Size829.0 MB 63.9 MB
Events in quadrant A3,033,952489,514
Events in quadrant B12,314,092236,103
Events in quadrant C3,689,392469,297
Events in quadrant D6,889,963418,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127673
B0405502
C0146682
D0245862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5918310.523826%
B5918440074.349442%
C59181823.075363%
D591874712.622508%

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 7202 5919 14 14 0.19% 0.24%
B 7202 5918 4044 4044 56.15% 68.33%
C 7202 5919 148 148 2.05% 2.50%
D 7202 5919 776 776 10.77% 13.11%

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 227831 1635.71 684 673 138.9
A 15 223 146708 1051.57 684 673 138.9
A 13 254 9337 62.39 684 673 138.9
B 4 171 10804575 179951.95 306 299 60.0
B 5 255 95852 1591.49 306 299 60.0
B 0 213 60347 1000.14 306 299 60.0
C 0 10 541945 3553.75 649 654 152.3
C 15 214 250815 1642.39 649 654 152.3
C 14 254 244667 1602.02 649 654 152.3
D 12 235 3995168 25557.86 633 615 156.3
D 13 171 124575 793.12 633 615 156.3
D 13 249 96211 611.64 633 615 156.3

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