ASTROSAT CZTI

Data Quality Report

Orbit 27059

Creation date: 2024-06-27T19:36:01.874575
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/AS1A09_120T02_9000003904_27059cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27059cztM0_level2_quad_clean.evt
Size (bytes)700,580,16090,679,680
Size668.1 MB 86.5 MB
Events in quadrant A8,471,560485,801
Events in quadrant B5,321,105599,717
Events in quadrant C3,231,358610,102
Events in quadrant D3,746,960589,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296670
B0201360
C0136430
D0154910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6605205531.112793%
B660577211.688115%
C66051011.529145%
D6605881.332324%

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 6925 6606 1811 1811 26.15% 27.41%
B 6925 6606 535 535 7.73% 8.10%
C 6925 6606 3 3 0.04% 0.05%
D 6925 6606 36 36 0.52% 0.54%

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 14 235 5703890 39952.36 708 695 142.7
A 6 16 34639 237.79 708 695 142.7
A 13 254 9304 60.31 708 695 142.7
B 0 189 1840575 12113.14 781 762 151.9
B 10 246 389794 2561.35 781 762 151.9
B 12 111 18328 115.65 781 762 151.9
C 14 238 125882 675.51 785 791 185.2
C 15 208 24290 126.9 785 791 185.2
C 3 233 16410 84.34 785 791 185.2
D 1 52 565405 2938.27 790 767 192.2
D 2 250 98680 509.52 790 767 192.2
D 12 233 82431 424.96 790 767 192.2

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