ASTROSAT CZTI

Data Quality Report

Orbit 28355

Creation date: 2024-06-27T19:50:51.201623
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_116T01_9000004082_28355cztM0_level2.evt modeM0/AS1A10_116T01_9000004082_28355cztM0_level2_quad_clean.evt
Size (bytes)202,970,88048,162,240
Size193.6 MB 45.9 MB
Events in quadrant A1,370,903336,220
Events in quadrant B1,160,822350,017
Events in quadrant C1,081,387321,670
Events in quadrant D2,386,819295,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114004203523972046
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054800
B048510
C046070
D085460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2133251.172058%
B2133130.609470%
C2133150.703235%
D213324511.486170%

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 2133 2133 28 28 1.31% 1.31%
B 2133 2133 2 2 0.09% 0.09%
C 2133 2133 0 0 0.00% 0.00%
D 2133 2133 226 226 10.60% 10.60%

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 240754 4170.9 285 281 57.7
A 12 96 28883 496.09 285 281 57.7
A 13 254 4068 65.68 285 281 57.7
B 0 230 12273 217.06 285 279 55.3
B 10 246 9710 170.67 285 279 55.3
B 12 0 8588 150.37 285 279 55.3
C 14 238 44399 697.61 266 268 63.3
C 13 61 1736 23.21 266 268 63.3
C 0 10 767 7.89 266 268 63.3
D 1 52 889830 14387.8 256 249 61.8
D 8 195 481474 7783.18 256 249 61.8
D 2 250 32878 527.73 256 249 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