ASTROSAT CZTI

Data Quality Report

Orbit 32740

Creation date: 2024-06-27T20:41:27.671483
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_057T04_9000004728_32740cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32740cztM0_level2_quad_clean.evt
Size (bytes)346,213,44059,757,120
Size330.2 MB 57.0 MB
Events in quadrant A2,422,334375,141
Events in quadrant B2,252,202396,025
Events in quadrant C1,936,272391,772
Events in quadrant D3,597,391359,578

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098272
B093371
C085021
D0135011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40631613.962589%
B4063310.762983%
C4063140.344573%
D40632516.177701%

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 5855 4064 131 131 2.24% 3.22%
B 5855 4064 19 19 0.32% 0.47%
C 5855 4064 6 6 0.10% 0.15%
D 5855 4064 192 192 3.28% 4.72%

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 15 249 484702 5163.41 468 461 93.8
A 0 254 66732 706.64 468 461 93.8
A 15 237 50878 537.59 468 461 93.8
B 3 26 136755 1498.15 479 469 91.0
B 0 199 57168 623.28 479 469 91.0
B 0 219 53849 586.79 479 469 91.0
C 8 35 41749 382.55 463 466 107.9
C 8 79 26053 237.1 463 466 107.9
C 3 233 18624 168.26 463 466 107.9
D 8 195 603103 5566.3 448 438 108.3
D 7 80 256453 2364.59 448 438 108.3
D 2 250 206876 1906.69 448 438 108.3

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