ASTROSAT CZTI

Data Quality Report

Orbit 20200419_T03_191T01_9000003618_level2

Creation date: 2020-06-10T00:09:36.709920
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/AS1T03_191T01_9000003618cztM0_level2_bc.evt modeM0/AS1T03_191T01_9000003618cztM0_level2_quad_clean.evt
Size (bytes)12,488,293,4406,026,878,080
Size11.6 GB 5.6 GB
Events in quadrant A66,050,47342,120,361
Events in quadrant B71,278,85142,153,186
Events in quadrant C78,779,56839,902,184
Events in quadrant D142,771,00038,914,878

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04970
B04970
C04970
D04970

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06339840
B06512220
C06812550
D08764870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030990
B030990
C030990
D030990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30432527540.904954%
B30432540531.331800%
C30432553441.756017%
D304325157345.170131%

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 353775 304297 25 25 0.01% 0.01%
B 353775 304298 310 310 0.09% 0.10%
C 353775 304291 120 120 0.03% 0.04%
D 353775 304294 6028 6028 1.70% 1.98%

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 13 254 481027 127.73 16913 16691 3635.2
A 12 96 295414 76.67 16913 16691 3635.2
A 4 2 215187 54.6 16913 16691 3635.2
B 4 80 2747806 862.09 16833 16504 3168.2
B 0 189 1134856 352.99 16833 16504 3168.2
B 0 190 770510 237.99 16833 16504 3168.2
C 7 247 14049730 3720.15 15970 15945 3772.4
C 10 91 891720 232.16 15970 15945 3772.4
C 2 16 751173 194.9 15970 15945 3772.4
D 1 52 53124016 13766.62 16325 15785 3857.8
D 8 195 18525800 4798.13 16325 15785 3857.8
D 7 238 4926367 1272.91 16325 15785 3857.8

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