ASTROSAT CZTI

Data Quality Report

Orbit 20190307_A05_075T06_9000002766_level2

Creation date: 2019-03-28T12:40:23.749578
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_075T06_9000002766cztM0_level2_bc.evt modeM0/AS1A05_075T06_9000002766cztM0_level2_quad_clean.evt
Size (bytes)654,399,360272,525,760
Size624.1 MB 259.9 MB
Events in quadrant A4,206,1831,760,270
Events in quadrant B4,350,2141,795,067
Events in quadrant C4,448,8511,743,983
Events in quadrant D5,574,2991,708,484

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393380
B0397960
C0409300
D0437580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180892461.359943%
B180892681.481563%
C180893962.189176%
D180894852.681187%

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 22965 18085 2 2 0.01% 0.01%
B 22965 18087 1 1 0.00% 0.01%
C 22965 18087 5 5 0.02% 0.03%
D 22965 18086 56 56 0.24% 0.31%

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 13 254 27379 114.71 1081 1066 229.4
A 9 143 13568 54.5 1081 1066 229.4
A 15 192 9688 37.59 1081 1066 229.4
B 0 229 92548 451.35 1098 1074 202.7
B 12 18 19700 91.9 1098 1074 202.7
B 4 173 11677 52.32 1098 1074 202.7
C 9 54 178633 723.0 1060 1057 245.6
C 3 233 147899 597.87 1060 1057 245.6
C 9 221 40580 160.92 1060 1057 245.6
D 7 238 732735 3005.51 1077 1044 243.4
D 1 52 407454 1669.38 1077 1044 243.4
D 5 222 214973 878.74 1077 1044 243.4

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