ASTROSAT CZTI

Data Quality Report

Orbit 28467

Creation date: 2024-06-27T19:52:02.606241
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_101T21_9000004090_28467cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28467cztM0_level2_quad_clean.evt
Size (bytes)489,225,600108,472,320
Size466.6 MB 103.4 MB
Events in quadrant A3,322,917736,204
Events in quadrant B2,740,520755,920
Events in quadrant C2,904,134720,130
Events in quadrant D5,454,702667,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136820
B0118610
C0120010
D0199330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58002313.982759%
B5801370.637821%
C5801580.999828%
D580087515.086207%

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 6730 5800 154 154 2.29% 2.66%
B 6731 5801 0 0 0.00% 0.00%
C 6731 5801 0 0 0.00% 0.00%
D 6730 5800 894 894 13.28% 15.41%

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 672268 4866.97 685 671 138.0
A 13 254 8432 56.24 685 671 138.0
A 3 137 6809 44.48 685 671 138.0
B 10 245 43454 330.73 680 663 129.4
B 12 111 16469 122.16 680 663 129.4
B 11 111 15195 112.32 680 663 129.4
C 7 247 219366 1405.47 659 662 155.6
C 14 238 106374 679.35 659 662 155.6
C 3 233 9438 56.4 659 662 155.6
D 1 52 1750483 11351.65 640 622 154.2
D 8 195 1111483 7206.34 640 622 154.2
D 12 233 67730 435.34 640 622 154.2

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