ASTROSAT CZTI

Data Quality Report

Orbit 20220826_T05_048T01_9000005318_level2

Creation date: 2022-08-29T14:37:53.719116
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/AS1T05_048T01_9000005318cztM0_level2_bc.evt modeM0/AS1T05_048T01_9000005318cztM0_level2_quad_clean.evt
Size (bytes)5,135,330,8801,005,753,600
Size4.8 GB 959.2 MB
Events in quadrant A20,146,0926,529,150
Events in quadrant B24,103,3006,573,259
Events in quadrant C22,868,7476,640,421
Events in quadrant D82,968,1255,217,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01689540
B01911950
C01757980
D04006470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016400
B016400
C016400
D016400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02930
B02930
C02930
D02940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A801222020.252116%
B8012425533.186311%
C801218411.049662%
D801252128426.563495%

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 108897 80143 22 22 0.02% 0.03%
B 108896 80124 272 272 0.25% 0.34%
C 108896 80127 300 300 0.28% 0.37%
D 108896 80127 5674 5674 5.21% 7.08%

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 3379042 3723.19 4062 3995 906.5
A 13 248 353135 385.15 4062 3995 906.5
A 9 143 194108 209.72 4062 3995 906.5
B 5 255 3054281 3789.71 4082 3987 804.9
B 5 172 2083873 2584.07 4082 3987 804.9
B 4 171 654085 807.69 4082 3987 804.9
C 15 214 3190760 3434.3 4030 4005 927.9
C 1 23 1844740 1983.72 4030 4005 927.9
C 0 10 652720 699.11 4030 4005 927.9
D 12 235 52299196 60068.85 3640 3530 870.6
D 12 227 6159392 7070.86 3640 3530 870.6
D 2 249 3153408 3618.07 3640 3530 870.6

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