ASTROSAT CZTI

Data Quality Report

Orbit 20220322_A10_057T01_9000005022_level2

Creation date: 2022-03-25T14:49:31.007446
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_057T01_9000005022cztM0_level2_bc.evt modeM0/AS1A10_057T01_9000005022cztM0_level2_quad_clean.evt
Size (bytes)3,143,352,960885,706,560
Size2.9 GB 844.7 MB
Events in quadrant A14,564,9025,819,277
Events in quadrant B19,540,2505,715,479
Events in quadrant C18,094,2975,692,263
Events in quadrant D38,595,3865,158,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01338760
B01571130
C01400070
D02193710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013240
B013240
C013240
D013240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A647581330.205380%
B6475825153.883690%
C647585170.798357%
D6475840246.213904%

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 88872 64771 13 13 0.01% 0.02%
B 88871 64748 74 74 0.08% 0.11%
C 88871 64758 134 134 0.15% 0.21%
D 88871 64758 655 655 0.74% 1.01%

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 682468 900.26 3418 3362 754.3
A 15 174 180769 235.18 3418 3362 754.3
A 9 143 152519 197.73 3418 3362 754.3
B 5 172 4098659 6140.45 3379 3304 666.9
B 5 200 1051975 1572.35 3379 3304 666.9
B 0 190 597741 891.28 3379 3304 666.9
C 15 214 2531492 3299.94 3343 3325 766.1
C 0 10 686817 892.14 3343 3325 766.1
C 1 23 572589 743.04 3343 3325 766.1
D 8 195 13240277 17076.12 3260 3166 775.2
D 13 249 2480663 3196.02 3260 3166 775.2
D 10 118 1602523 2063.2 3260 3166 775.2

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