ASTROSAT CZTI

Data Quality Report

Orbit 20151217_G04_007T02_9000000220_level2

Creation date: 2016-09-06T17:56:25.385717
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/AS1G04_007T02_9000000220cztM0_level2_bc.evt modeM0/AS1G04_007T02_9000000220cztM0_level2_quad_clean.evt
Size (bytes)8,171,092,8002,836,019,520
Size7.6 GB 2.6 GB
Events in quadrant A36,949,89219,056,282
Events in quadrant B42,729,12018,854,716
Events in quadrant C43,606,18118,355,967
Events in quadrant D111,248,96616,614,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02240
C02240
D02270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08143070
B08555900
C08063310
D09871600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039080
B039080
C039080
D039080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1897679680.510099%
B18976722201.169856%
C1897674710.248199%
D1897662952815.560216%

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 225607 192114 173 173 0.08% 0.09%
B 225607 192087 329 329 0.15% 0.17%
C 225607 192155 2 2 0.00% 0.00%
D 225607 192182 20670 20670 9.16% 10.76%

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 15 127 1884324 1060.03 8437 8251 1769.8
A 4 32 883987 494.81 8437 8251 1769.8
A 8 14 574326 319.85 8437 8251 1769.8
B 2 32 3204207 2131.72 8502 8265 1499.2
B 5 191 2008729 1334.33 8502 8265 1499.2
B 6 53 1364712 904.76 8502 8265 1499.2
C 15 241 9809920 5774.28 8116 7954 1697.5
C 3 79 813851 474.75 8116 7954 1697.5
C 3 111 464526 268.96 8116 7954 1697.5
D 1 239 66865791 40397.6 7580 7347 1655.0
D 10 84 4732206 2854.88 7580 7347 1655.0
D 1 83 2018278 1215.06 7580 7347 1655.0

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
Veto Counter