ASTROSAT CZTI

Data Quality Report

Orbit 36522

Creation date: 2024-06-27T21:27:54.664554
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/AS1A11_089T02_9000005216_36522cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36522cztM0_level2_quad_clean.evt
Size (bytes)256,809,60039,300,480
Size244.9 MB 37.5 MB
Events in quadrant A1,219,050273,897
Events in quadrant B1,293,587272,881
Events in quadrant C1,379,089262,301
Events in quadrant D3,731,543218,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050032
B052361
C054101
D0126481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224360.267499%
B2243301.337494%
C2243753.343736%
D224382636.825680%

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 4366 2244 4 4 0.09% 0.18%
B 4366 2244 14 14 0.32% 0.62%
C 4366 2244 47 47 1.08% 2.09%
D 4366 2244 852 852 19.51% 37.97%

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 91757 1555.86 285 281 58.8
A 9 143 21152 354.98 285 281 58.8
A 13 254 3889 61.37 285 281 58.8
B 5 172 74498 1350.8 279 273 54.9
B 0 189 58694 1063.19 279 273 54.9
B 0 190 18178 325.85 279 273 54.9
C 0 10 231632 3645.95 269 272 63.5
C 15 214 96101 1510.15 269 272 63.5
C 13 61 1785 23.84 269 272 63.5
D 12 227 2335466 37759.03 246 240 61.8
D 13 249 92235 1487.5 246 240 61.8
D 12 235 77260 1245.36 246 240 61.8

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