ASTROSAT CZTI

Data Quality Report

Orbit 20180506_G08_022T01_9000002078_level2

Creation date: 2018-05-10T19:37:53.145470
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/AS1G08_022T01_9000002078cztM0_level2_bc.evt modeM0/AS1G08_022T01_9000002078cztM0_level2_quad_clean.evt
Size (bytes)5,415,791,0401,726,407,360
Size5.0 GB 1.6 GB
Events in quadrant A30,222,05911,474,234
Events in quadrant B48,188,95210,898,341
Events in quadrant C27,680,98510,938,765
Events in quadrant D49,403,88810,396,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025520
B025520
C025520
D025520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01810
B01810
C01810
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02728320
B03498300
C02604200
D03355600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12526018741.496088%
B12526097987.822130%
C1252608300.662622%
D12526056494.509820%

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 143056 125263 100 100 0.07% 0.08%
B 143055 125235 1187 1187 0.83% 0.95%
C 143055 125262 15 15 0.01% 0.01%
D 143055 125259 1554 1554 1.09% 1.24%

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 15 222 1777289 1220.55 6714 6586 1450.7
A 9 143 1155727 792.11 6714 6586 1450.7
A 12 189 931317 637.42 6714 6586 1450.7
B 10 16 18623469 15236.45 6472 6313 1221.9
B 0 189 1413357 1151.54 6472 6313 1221.9
B 10 245 981413 798.03 6472 6313 1221.9
C 3 233 1974030 1381.29 6449 6377 1424.5
C 0 207 315433 216.96 6449 6377 1424.5
C 10 22 82611 53.52 6449 6377 1424.5
D 1 52 17872963 11810.16 6348 6174 1512.8
D 8 195 1714317 1129.1 6348 6174 1512.8
D 12 110 1173592 771.68 6348 6174 1512.8

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