ASTROSAT CZTI

Data Quality Report

Orbit 20190820_A05_101T03_9000003112_level2

Creation date: 2019-08-23T10:40:43.352251
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_101T03_9000003112cztM0_level2_bc.evt modeM0/AS1A05_101T03_9000003112cztM0_level2_quad_clean.evt
Size (bytes)620,663,040221,400,000
Size591.9 MB 211.1 MB
Events in quadrant A3,864,8971,381,424
Events in quadrant B4,284,7591,436,527
Events in quadrant C3,783,0301,386,618
Events in quadrant D5,681,0721,310,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03540
C03540
D03540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362180
B0376240
C0363320
D0418970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172691080.625398%
B172692181.262378%
C172691981.146563%
D172693111.800915%

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 22434 17269 0 0 0.00% 0.00%
B 22434 17270 7 7 0.03% 0.04%
C 22434 17269 0 0 0.00% 0.00%
D 22434 17269 92 92 0.41% 0.53%

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 12 96 27045 122.26 995 978 213.2
A 13 254 21580 96.63 995 978 213.2
A 0 226 6406 25.46 995 978 213.2
B 0 219 128535 672.74 1025 1002 189.6
B 7 220 72471 377.0 1025 1002 189.6
B 3 64 70596 367.11 1025 1002 189.6
C 3 9 9477 37.33 982 979 227.6
C 13 61 5498 19.85 982 979 227.6
C 14 238 3281 10.11 982 979 227.6
D 7 238 673441 3052.97 975 944 220.3
D 1 52 604734 2741.06 975 944 220.3
D 9 1 448507 2031.83 975 944 220.3

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