ASTROSAT CZTI

Data Quality Report

Orbit 20181227_A05_012T02_9000002602_level2

Creation date: 2018-12-29T10:23:27.328184
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_012T02_9000002602cztM0_level2_bc.evt modeM0/AS1A05_012T02_9000002602cztM0_level2_quad_clean.evt
Size (bytes)2,631,228,480945,267,840
Size2.5 GB 901.5 MB
Events in quadrant A26,023,6915,967,921
Events in quadrant B15,162,8186,157,930
Events in quadrant C14,921,0575,897,944
Events in quadrant D18,820,3235,820,860

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01981790
B01467880
C01456730
D01581870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014220
B014220
C014220
D014220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6980365599.396444%
B698037811.118863%
C698039181.315130%
D6980316012.293598%

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 81133 69803 241 241 0.30% 0.35%
B 81133 69803 20 20 0.02% 0.03%
C 81133 69801 19 19 0.02% 0.03%
D 81133 69800 594 594 0.73% 0.85%

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 14 237 12328934 16246.43 3487 3418 758.7
A 15 174 207868 269.49 3487 3418 758.7
A 11 47 57658 71.49 3487 3418 758.7
B 7 220 355535 513.13 3639 3549 686.0
B 4 216 132564 188.08 3639 3549 686.0
B 0 230 123450 174.79 3639 3549 686.0
C 3 233 996305 1235.82 3454 3438 803.4
C 0 207 366828 452.31 3454 3438 803.4
C 5 218 161365 196.57 3454 3438 803.4
D 13 189 1646843 2012.15 3552 3441 816.7
D 12 227 1586131 1937.82 3552 3441 816.7
D 2 234 332888 403.37 3552 3441 816.7

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