ASTROSAT CZTI

Data Quality Report

Orbit 20220306_C07_005T01_9000004992_level2

Creation date: 2022-04-11T21:25:08.974668
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/AS1C07_005T01_9000004992cztM0_level2_bc.evt modeM0/AS1C07_005T01_9000004992cztM0_level2_quad_clean.evt
Size (bytes)20,266,297,9205,274,331,200
Size18.9 GB 4.9 GB
Events in quadrant A174,404,38334,192,139
Events in quadrant B136,596,36929,807,198
Events in quadrant C101,649,82537,934,709
Events in quadrant D178,351,15134,863,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012840
B012840
C012840
D012840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012024220
B015880690
C07526900
D010487990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068200
B068200
C068200
D068200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3341996809120.374388%
B33419913015638.945658%
C33419947321.415923%
D334199230226.888710%

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 462058 334051 1020 1020 0.22% 0.31%
B 462058 334180 3757 3757 0.81% 1.12%
C 462058 334201 1168 1168 0.25% 0.35%
D 462058 334196 6623 6623 1.43% 1.98%

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 15 169 104892290 30038.63 15856 15669 3491.4
A 15 237 2632928 749.63 15856 15669 3491.4
A 10 83 1980893 562.88 15856 15669 3491.4
B 4 251 22005719 7977.54 13858 13665 2756.7
B 5 31 19806487 7179.77 13858 13665 2756.7
B 5 172 14346861 5199.31 13858 13665 2756.7
C 15 214 14301238 3672.86 17128 17069 3889.1
C 0 207 9341406 2397.55 17128 17069 3889.1
C 0 10 5301793 1358.85 17128 17069 3889.1
D 8 195 38393577 9482.16 16783 16350 4047.3
D 12 227 21810298 5384.8 16783 16350 4047.3
D 14 52 11925882 2942.58 16783 16350 4047.3

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