ASTROSAT CZTI

Data Quality Report

Orbit 20170925_G07_062T01_9000001560_level2

Creation date: 2017-10-18T16:36:16.365636
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/AS1G07_062T01_9000001560cztM0_level2.evt modeM0/AS1G07_062T01_9000001560cztM0_level2_quad_clean.evt
Size (bytes)4,097,782,080917,864,640
Size3.8 GB 875.3 MB
Events in quadrant A24,836,2436,130,893
Events in quadrant B37,507,1666,017,255
Events in quadrant C22,604,1666,264,967
Events in quadrant D35,661,1515,832,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110090
B01474200
C01056770
D01407480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010560
B010580
C010580
D010580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518108431.627099%
B5180848039.270769%
C518013050.588792%
D5181124324.693984%

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 58018 51829 402 402 0.69% 0.78%
B 58018 51828 2722 2722 4.69% 5.25%
C 58018 51829 41 41 0.07% 0.08%
D 58018 51829 1655 1655 2.85% 3.19%

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 15 174 1233942 1051.65 5832 5710 1167.9
A 14 254 812770 691.03 5832 5710 1167.9
A 8 15 137943 113.22 5832 5710 1167.9
B 4 239 14152971 13340.12 5707 5561 1060.5
B 0 219 248298 228.89 5707 5561 1060.5
B 15 204 225410 207.3 5707 5561 1060.5
C 14 234 147677 108.26 5728 5740 1311.1
C 0 207 71201 49.93 5728 5740 1311.1
C 13 61 43378 28.71 5728 5740 1311.1
D 8 195 3303241 2463.79 5603 5441 1338.5
D 10 199 2447100 1824.16 5603 5441 1338.5
D 13 138 1529457 1138.59 5603 5441 1338.5

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