ASTROSAT CZTI

Data Quality Report

Orbit 20190223_A05_199T01_9000002732_level2

Creation date: 2019-02-26T12:05:24.355804
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_199T01_9000002732cztM0_level2_bc.evt modeM0/AS1A05_199T01_9000002732cztM0_level2_quad_clean.evt
Size (bytes)7,120,756,8002,860,430,400
Size6.6 GB 2.7 GB
Events in quadrant A44,147,12118,217,359
Events in quadrant B54,017,00118,559,310
Events in quadrant C41,966,24318,080,003
Events in quadrant D61,338,98117,521,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04355240
B04701950
C04329950
D04826580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042440
B042440
C042440
D042440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03310
B03310
C03310
D03310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20828927091.300597%
B20828954252.604554%
C20828934061.635228%
D20828941832.008267%

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 241079 208283 46 46 0.02% 0.02%
B 241079 208278 269 269 0.11% 0.13%
C 241079 208281 6 6 0.00% 0.00%
D 241079 208278 477 477 0.20% 0.23%

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 4 2 934186 392.77 10814 10604 2351.4
A 15 174 774086 324.69 10814 10604 2351.4
A 14 238 702996 294.46 10814 10604 2351.4
B 10 245 10507720 5098.36 10962 10678 2058.9
B 0 189 399111 188.66 10962 10678 2058.9
B 0 244 336027 158.02 10962 10678 2058.9
C 3 233 833863 332.39 10567 10506 2477.0
C 9 54 380671 149.44 10567 10506 2477.0
C 13 61 62065 20.81 10567 10506 2477.0
D 1 52 7514781 3047.82 10666 10287 2462.2
D 12 110 4843664 1963.0 10666 10287 2462.2
D 13 168 1861134 751.69 10666 10287 2462.2

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