ASTROSAT CZTI

Data Quality Report

Orbit 20160726_G05_253T03_9000000562_level2

Creation date: 2017-10-17T20:32:54.894495
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/AS1G05_253T03_9000000562cztM0_level2.evt modeM0/AS1G05_253T03_9000000562cztM0_level2_quad_clean.evt
Size (bytes)8,072,743,6801,332,406,080
Size7.5 GB 1.2 GB
Events in quadrant A61,928,2038,089,112
Events in quadrant B55,313,4518,342,607
Events in quadrant C53,467,6828,325,659
Events in quadrant D66,143,7717,845,397

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690
B01690
C01690
D01700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023060
B023060
C023060
D023060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02611050
B02380320
C02379130
D02752510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11313542303.738896%
B11313217601.555705%
C11313515621.380651%
D11313538953.442790%

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 144152 113161 1896 1896 1.32% 1.68%
B 144152 113161 73 73 0.05% 0.06%
C 144152 113161 331 331 0.23% 0.29%
D 144152 113160 2089 2089 1.45% 1.85%

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 0 13 6567937 2458.05 13183 12911 2666.8
A 0 118 2304092 859.16 13183 12911 2666.8
A 0 50 919973 340.14 13183 12911 2666.8
B 15 204 1242420 480.86 13504 13211 2556.3
B 4 48 465835 177.06 13504 13211 2556.3
B 8 3 316819 118.77 13504 13211 2556.3
C 9 247 1001163 329.59 12995 13053 2998.0
C 9 54 822958 270.15 12995 13053 2998.0
C 9 16 447024 144.75 12995 13053 2998.0
D 13 235 6212000 2015.97 12793 12428 3075.2
D 14 34 3518800 1140.2 12793 12428 3075.2
D 8 112 2201839 711.95 12793 12428 3075.2

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