ASTROSAT CZTI

Data Quality Report

Orbit 20190608_A05_082T09_9000002978_level2

Creation date: 2019-06-11T13:01:19.791108
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_082T09_9000002978cztM0_level2_bc.evt modeM0/AS1A05_082T09_9000002978cztM0_level2_quad_clean.evt
Size (bytes)1,617,592,320396,429,120
Size1.5 GB 378.1 MB
Events in quadrant A20,285,5091,153,746
Events in quadrant B7,611,9232,904,155
Events in quadrant C9,260,9192,744,827
Events in quadrant D9,370,1132,737,090

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07240
B07240
C07240
D07240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02182340
B0750220
C0814480
D0802730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A358192469368.938273%
B358193961.105559%
C358196451.800720%
D358194561.273067%

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 39128 34886 185 185 0.47% 0.53%
B 39129 35814 6 6 0.02% 0.02%
C 39129 35816 5 5 0.01% 0.01%
D 39129 35815 123 123 0.31% 0.34%

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 14 238 16631884 87029.59 845 827 191.1
A 14 254 278037 1450.63 845 827 191.1
A 14 237 76002 393.39 845 827 191.1
B 7 220 88307 236.6 1883 1829 365.5
B 3 64 69520 185.2 1883 1829 365.5
B 4 171 56560 149.74 1883 1829 365.5
C 3 233 1680268 3944.7 1788 1777 425.5
C 9 221 560203 1312.38 1788 1777 425.5
C 0 207 99893 230.59 1788 1777 425.5
D 1 52 1764559 3960.11 1863 1794 445.1
D 12 218 242393 540.51 1863 1794 445.1
D 2 234 142886 316.97 1863 1794 445.1

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