ASTROSAT CZTI

Data Quality Report

Orbit 20220924_A10_103T06_9000005348_level2

Creation date: 2022-09-29T12:53:37.009061
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_103T06_9000005348cztM0_level2_bc.evt modeM0/AS1A10_103T06_9000005348cztM0_level2_quad_clean.evt
Size (bytes)3,062,548,800913,199,040
Size2.9 GB 870.9 MB
Events in quadrant A19,341,6745,876,169
Events in quadrant B22,692,1905,831,392
Events in quadrant C17,834,8005,934,588
Events in quadrant D28,273,8875,372,411

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01498500
B01701550
C01429940
D01920550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013860
B013860
C013860
D013860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A677222630.388352%
B6772221153.123062%
C677222250.332241%
D6772346636.885401%

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 95317 67736 19 19 0.02% 0.03%
B 95317 67722 159 159 0.17% 0.23%
C 95317 67722 48 48 0.05% 0.07%
D 95317 67712 1130 1130 1.19% 1.67%

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 3435355 4410.39 3538 3491 778.1
A 15 222 1222847 1567.03 3538 3491 778.1
A 9 143 502182 640.88 3538 3491 778.1
B 5 172 3120133 4464.67 3521 3447 698.1
B 10 246 1827449 2612.89 3521 3447 698.1
B 0 229 1694933 2423.06 3521 3447 698.1
C 15 214 2888468 3684.46 3462 3447 783.0
C 0 10 611219 776.19 3462 3447 783.0
C 0 207 502580 637.44 3462 3447 783.0
D 13 249 5654031 7104.39 3392 3302 795.4
D 5 222 2253242 2828.74 3392 3302 795.4
D 2 249 1100907 1379.97 3392 3302 795.4

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