ASTROSAT CZTI

Data Quality Report

Orbit 20180525_T02_046T01_9000002116_level2

Creation date: 2018-05-26T15:04:50.672105
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_046T01_9000002116cztM0_level2_bc.evt modeM0/AS1T02_046T01_9000002116cztM0_level2_quad_clean.evt
Size (bytes)530,297,280203,673,600
Size505.7 MB 194.2 MB
Events in quadrant A3,063,0491,312,888
Events in quadrant B3,820,3931,311,639
Events in quadrant C4,079,8641,262,659
Events in quadrant D4,064,8241,243,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309080
B0340260
C0335920
D0351160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150451571.043536%
B150454022.671984%
C150451330.884015%
D150454723.137255%

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 17236 15044 1 1 0.01% 0.01%
B 17236 15044 8 8 0.05% 0.05%
C 17236 15043 1 1 0.01% 0.01%
D 17236 15043 72 72 0.42% 0.48%

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 77608 449.0 763 747 171.2
A 15 69 15235 84.63 763 747 171.2
A 8 15 12534 68.86 763 747 171.2
B 0 182 425242 2843.5 758 736 149.3
B 0 229 226810 1514.33 758 736 149.3
B 0 219 54387 359.37 758 736 149.3
C 3 233 1186841 7269.09 732 719 163.2
C 10 22 8658 48.65 732 719 163.2
C 14 234 8558 48.04 732 719 163.2
D 1 52 492576 2777.83 734 711 177.1
D 2 120 253003 1424.83 734 711 177.1
D 12 110 142663 801.68 734 711 177.1

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