ASTROSAT CZTI

Data Quality Report

Orbit 20180509_G08_033T01_9000002084_level2

Creation date: 2018-05-12T10:57:52.375103
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_033T01_9000002084cztM0_level2_bc.evt modeM0/AS1G08_033T01_9000002084cztM0_level2_quad_clean.evt
Size (bytes)622,221,120233,038,080
Size593.4 MB 222.2 MB
Events in quadrant A3,368,7061,589,119
Events in quadrant B4,419,2261,544,633
Events in quadrant C3,397,2501,504,493
Events in quadrant D6,669,1631,423,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307350
B0359440
C0303620
D0416240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144541901.314515%
B144547565.230386%
C14454790.546562%
D144546684.621558%

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 17235 14456 0 0 0.00% 0.00%
B 17235 14454 54 54 0.31% 0.37%
C 17235 14456 0 0 0.00% 0.00%
D 17235 14455 87 87 0.50% 0.60%

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 232780 1335.18 788 774 173.8
A 12 96 43752 247.34 788 774 173.8
A 9 143 39870 225.0 788 774 173.8
B 0 85 1009772 6703.51 772 754 150.5
B 0 189 113488 748.96 772 754 150.5
B 10 244 98971 652.51 772 754 150.5
C 3 233 423677 2511.2 750 742 168.4
C 14 220 12378 69.09 750 742 168.4
C 8 128 10989 60.84 750 742 168.4
D 1 52 1707034 9526.9 734 714 179.1
D 8 195 1181313 6591.64 734 714 179.1
D 7 80 537158 2995.13 734 714 179.1

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