ASTROSAT CZTI

Data Quality Report

Orbit 42040

Creation date: 2024-06-27T22:36:05.600178
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/AS1A12_037T01_9000005736_42040cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42040cztM0_level2_quad_clean.evt
Size (bytes)311,976,00089,467,200
Size297.5 MB 85.3 MB
Events in quadrant A3,128,076607,613
Events in quadrant B2,568,016631,891
Events in quadrant C2,632,474586,269
Events in quadrant D2,828,495531,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124702
B0106971
C0107281
D0117761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5021220.438160%
B5021190.378411%
C502140.079665%
D5021771.533559%

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 7142 5022 14 14 0.20% 0.28%
B 7142 5022 10 10 0.14% 0.20%
C 7142 5022 1 1 0.01% 0.02%
D 7142 5022 73 73 1.02% 1.45%

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 453665 3712.94 594 582 122.0
A 15 222 170505 1392.49 594 582 122.0
A 12 189 107843 878.99 594 582 122.0
B 5 255 103242 906.36 593 578 113.3
B 5 32 67905 594.39 593 578 113.3
B 0 190 33714 292.54 593 578 113.3
C 15 214 209192 1563.8 573 577 133.4
C 7 220 124409 928.26 573 577 133.4
C 8 79 53249 394.84 573 577 133.4
D 12 6 259907 1874.65 568 553 138.3
D 13 249 237059 1709.5 568 553 138.3
D 12 218 75212 539.65 568 553 138.3

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