ASTROSAT CZTI

Data Quality Report

Orbit 20170917_G07_076T01_9000001538_level2

Creation date: 2017-10-18T14:50:10.084416
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_076T01_9000001538cztM0_level2.evt modeM0/AS1G07_076T01_9000001538cztM0_level2_quad_clean.evt
Size (bytes)1,303,462,080201,568,320
Size1.2 GB 192.2 MB
Events in quadrant A9,072,4351,216,418
Events in quadrant B10,745,8061,247,745
Events in quadrant C8,043,2961,262,466
Events in quadrant D10,461,1381,201,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387740
B0431440
C0359810
D0425190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03440
C03440
D03460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170587174.203306%
B170589725.698206%
C170502911.706745%
D170582961.735256%

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 17483 17078 281 281 1.61% 1.65%
B 17483 17079 417 417 2.39% 2.44%
C 17483 17080 76 76 0.43% 0.44%
D 17483 17079 64 64 0.37% 0.37%

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 15 223 744712 1866.75 1940 1892 397.9
A 15 174 357712 894.2 1940 1892 397.9
A 15 239 319166 797.33 1940 1892 397.9
B 4 239 2414928 6510.59 1945 1894 370.6
B 15 204 394331 1058.83 1945 1894 370.6
B 4 81 103601 274.41 1945 1894 370.6
C 4 254 483212 1089.28 1912 1920 441.8
C 14 234 57169 125.04 1912 1920 441.8
C 4 175 15940 31.73 1912 1920 441.8
D 1 20 2288672 4984.26 1899 1842 458.8
D 8 195 259785 562.2 1899 1842 458.8
D 13 249 237772 514.22 1899 1842 458.8

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