ASTROSAT CZTI

Data Quality Report

Orbit 17976

Creation date: 2024-06-27T17:43:22.054286
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/AS1A05_019T01_9000002672_17976cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17976cztM0_level2_quad_clean.evt
Size (bytes)526,884,480112,527,360
Size502.5 MB 107.3 MB
Events in quadrant A3,388,915771,029
Events in quadrant B3,579,438771,007
Events in quadrant C3,426,677717,970
Events in quadrant D5,123,492697,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142362
B0147862
C0141472
D0195172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6465731.129157%
B6466851.314569%
C6466991.531086%
D64665167.980204%

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 7750 6466 8 8 0.10% 0.12%
B 7751 6467 18 18 0.23% 0.28%
C 7751 6467 15 15 0.19% 0.23%
D 7751 6467 439 439 5.66% 6.79%

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 15 174 85703 496.03 858 844 171.1
A 0 226 7709 40.13 858 844 171.1
A 0 31 6471 32.89 858 844 171.1
B 7 220 123064 775.86 845 825 157.6
B 0 182 58328 364.98 845 825 157.6
B 0 197 25946 159.44 845 825 157.6
C 14 238 124854 666.41 802 807 186.1
C 0 207 91089 485.02 802 807 186.1
C 3 233 71902 381.94 802 807 186.1
D 7 238 1434823 7108.52 804 782 201.7
D 11 176 421995 2087.95 804 782 201.7
D 5 222 45636 222.34 804 782 201.7

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