ASTROSAT CZTI

Data Quality Report

Orbit 20200217_A07_027T08_9000003514_level2

Creation date: 2020-02-18T11:30:13.527162
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/AS1A07_027T08_9000003514cztM0_level2_bc.evt modeM0/AS1A07_027T08_9000003514cztM0_level2_quad_clean.evt
Size (bytes)702,599,040248,132,160
Size670.1 MB 236.6 MB
Events in quadrant A3,869,1751,621,640
Events in quadrant B4,713,2291,651,948
Events in quadrant C3,938,6821,548,538
Events in quadrant D7,555,8411,482,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366650
B0394370
C0376280
D0483390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175521200.683683%
B175521851.054011%
C175523301.880128%
D175523021.720602%

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 22532 17549 0 0 0.00% 0.00%
B 22532 17549 11 11 0.05% 0.06%
C 22532 17551 28 28 0.12% 0.16%
D 22532 17549 45 45 0.20% 0.26%

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 30000 133.18 1000 984 217.9
A 0 226 6489 25.27 1000 984 217.9
A 12 194 6085 23.41 1000 984 217.9
B 3 64 359864 1860.11 1018 996 192.9
B 0 229 177204 913.34 1018 996 192.9
B 0 189 145503 749.02 1018 996 192.9
C 10 9 194054 862.05 947 944 224.0
C 7 247 79630 351.26 947 944 224.0
C 0 10 15600 65.42 947 944 224.0
D 8 195 2874617 12887.46 958 925 223.0
D 1 52 450277 2015.18 958 925 223.0
D 7 238 258684 1155.95 958 925 223.0

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