ASTROSAT CZTI

Data Quality Report

Orbit 20160924_G05_021T02_9000000680_level2

Creation date: 2016-10-21T04:48:15.437798
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_021T02_9000000680cztM0_level2_bc.evt modeM0/AS1G05_021T02_9000000680cztM0_level2_quad_clean.evt
Size (bytes)2,614,711,680711,483,840
Size2.4 GB 678.5 MB
Events in quadrant A15,994,5714,225,462
Events in quadrant B15,331,3634,308,300
Events in quadrant C16,400,6884,312,623
Events in quadrant D26,697,9463,910,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01533810
B01494690
C01480990
D01920100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014180
B014180
C014180
D014180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6987716462.355568%
B6988112231.750118%
C698778641.236458%
D6986548246.904745%

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 80244 69880 80 80 0.10% 0.11%
B 80244 69880 13 13 0.02% 0.02%
C 80244 69882 7 7 0.01% 0.01%
D 80244 69875 1004 1004 1.25% 1.44%

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 1724578 2279.14 3369 3288 755.2
A 0 50 1049581 1385.39 3369 3288 755.2
A 13 251 144788 187.36 3369 3288 755.2
B 4 80 571569 851.53 3456 3347 667.3
B 15 204 294475 436.28 3456 3347 667.3
B 0 219 197468 290.91 3456 3347 667.3
C 1 16 2957027 3966.97 3356 3290 744.6
C 9 247 245493 325.29 3356 3290 744.6
C 14 67 44542 55.4 3356 3290 744.6
D 7 237 10486113 13707.4 3205 3071 764.8
D 2 136 924256 1204.52 3205 3071 764.8
D 4 95 796300 1037.21 3205 3071 764.8

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