ASTROSAT CZTI

Data Quality Report

Orbit 20180511_G08_045T01_9000002092_level2

Creation date: 2018-05-14T18:10:02.799413
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/AS1G08_045T01_9000002092cztM0_level2_bc.evt modeM0/AS1G08_045T01_9000002092cztM0_level2_quad_clean.evt
Size (bytes)2,816,193,600767,594,880
Size2.6 GB 732.0 MB
Events in quadrant A13,287,2014,951,364
Events in quadrant B29,804,1594,941,242
Events in quadrant C14,199,8954,766,535
Events in quadrant D23,963,2784,524,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01256810
B01984120
C01260120
D01585390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012020
B012020
C012020
D012020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A592866641.119995%
B59286885114.929326%
C592864720.796141%
D5928612462.101677%

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 68587 59287 7 7 0.01% 0.01%
B 68587 59271 189 189 0.28% 0.32%
C 68587 59288 1 1 0.00% 0.00%
D 68587 59287 275 275 0.40% 0.46%

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 12 189 470453 671.77 3231 3179 695.6
A 9 143 182133 257.27 3231 3179 695.6
A 8 15 104455 145.6 3231 3179 695.6
B 0 85 16418389 27634.17 3099 3011 594.0
B 0 189 433765 725.14 3099 3011 594.0
B 3 209 308020 513.46 3099 3011 594.0
C 3 233 1752986 2576.59 3104 3073 679.2
C 0 207 219673 318.92 3104 3073 679.2
C 10 22 41738 56.93 3104 3073 679.2
D 8 195 4761748 6740.2 3077 2996 706.0
D 1 52 3075136 4351.32 3077 2996 706.0
D 12 110 1489984 2106.14 3077 2996 706.0

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