ASTROSAT CZTI

Data Quality Report

Orbit 20180703_T02_052T01_9000002208_level2

Creation date: 2018-07-04T11:02:50.632435
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/AS1T02_052T01_9000002208cztM0_level2_bc.evt modeM0/AS1T02_052T01_9000002208cztM0_level2_quad_clean.evt
Size (bytes)1,289,537,280313,623,360
Size1.2 GB 299.1 MB
Events in quadrant A5,441,3812,002,773
Events in quadrant B8,228,2741,934,476
Events in quadrant C7,218,4181,936,411
Events in quadrant D16,313,1001,756,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0562030
B0670100
C0617970
D0899520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271303581.319572%
B2713010313.800221%
C271306012.215260%
D27130329112.130483%

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 29462 27133 2 2 0.01% 0.01%
B 29462 27134 86 86 0.29% 0.32%
C 29462 27132 65 65 0.22% 0.24%
D 29462 27133 1635 1635 5.55% 6.03%

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 102021 328.57 1373 1341 306.4
A 15 69 21837 66.89 1373 1341 306.4
A 4 2 16264 48.7 1373 1341 306.4
B 10 16 2351835 8976.95 1342 1301 261.8
B 0 189 260544 990.08 1342 1301 261.8
B 0 219 202972 770.2 1342 1301 261.8
C 9 236 1437293 4776.38 1325 1301 300.6
C 3 233 549777 1824.33 1325 1301 300.6
C 10 22 28770 91.37 1325 1301 300.6
D 7 254 10733026 35280.56 1286 1245 304.2
D 10 70 217832 712.03 1286 1245 304.2
D 13 249 142918 465.75 1286 1245 304.2

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