ASTROSAT CZTI

Data Quality Report

Orbit 20171229_G08_010T03_9000001800_level2

Creation date: 2018-08-01T21:14:21.286783
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_010T03_9000001800cztM0_level2_bc.evt modeM0/AS1G08_010T03_9000001800cztM0_level2_quad_clean.evt
Size (bytes)1,569,844,800500,535,360
Size1.5 GB 477.3 MB
Events in quadrant A9,202,8683,168,975
Events in quadrant B13,220,4403,107,875
Events in quadrant C8,327,4293,131,719
Events in quadrant D14,034,5692,976,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0909740
B01067920
C0841340
D01047390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08280
B08280
C08280
D08280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A403945971.477942%
B4039426696.607417%
C403942610.646136%
D4039416464.074863%

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 45275 40395 3 3 0.01% 0.01%
B 45275 40385 73 73 0.16% 0.18%
C 45275 40396 10 10 0.02% 0.02%
D 45275 40391 318 318 0.70% 0.79%

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 1 162 469831 1071.07 2016 1975 436.8
A 8 15 282003 641.07 2016 1975 436.8
A 13 251 249819 567.39 2016 1975 436.8
B 4 239 4036778 10684.21 1957 1902 377.6
B 15 204 775682 2048.94 1957 1902 377.6
B 11 51 303624 798.95 1957 1902 377.6
C 15 208 435879 1005.37 1954 1925 431.6
C 5 112 131010 299.06 1954 1925 431.6
C 4 175 28094 60.63 1954 1925 431.6
D 1 52 3471974 7673.75 1948 1883 452.2
D 10 157 653992 1442.07 1948 1883 452.2
D 4 95 477266 1051.26 1948 1883 452.2

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