ASTROSAT CZTI

Data Quality Report

Orbit 20200619_A09_043T02_9000003726_level2

Creation date: 2021-01-10T11:28:23.436065
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/AS1A09_043T02_9000003726cztM0_level2_bc.evt modeM0/AS1A09_043T02_9000003726cztM0_level2_quad_clean.evt
Size (bytes)8,338,383,3602,513,433,600
Size7.8 GB 2.3 GB
Events in quadrant A50,636,00016,261,210
Events in quadrant B46,640,54916,522,141
Events in quadrant C41,695,47315,430,206
Events in quadrant D100,366,12214,625,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04330470
B04200020
C04112230
D06071210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039480
B039480
C039480
D039480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19404940812.103077%
B19404932941.697509%
C19404938491.983520%
D194049125216.452494%

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 226387 194060 542 542 0.24% 0.28%
B 226387 194059 19 19 0.01% 0.01%
C 226387 194059 40 40 0.02% 0.02%
D 226387 194049 2446 2446 1.08% 1.26%

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 8 192 4649509 1979.24 11012 10831 2343.7
A 6 16 2672219 1135.57 11012 10831 2343.7
A 10 17 441364 183.7 11012 10831 2343.7
B 0 219 1680605 813.24 11127 10894 2053.2
B 0 190 629573 301.33 11127 10894 2053.2
B 3 112 483796 230.33 11127 10894 2053.2
C 3 233 767531 315.48 10357 10341 2400.1
C 2 16 608925 249.4 10357 10341 2400.1
C 0 207 412385 167.51 10357 10341 2400.1
D 1 52 32332318 13371.68 10401 10043 2417.2
D 8 195 16125944 6667.13 10401 10043 2417.2
D 2 244 3441280 1419.5 10401 10043 2417.2

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