ASTROSAT CZTI

Data Quality Report

Orbit 20180102_C03_005T01_9000001810_level2

Creation date: 2018-08-01T20:59:31.316649
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/AS1C03_005T01_9000001810cztM0_level2_bc.evt modeM0/AS1C03_005T01_9000001810cztM0_level2_quad_clean.evt
Size (bytes)1,724,751,360840,876,480
Size1.6 GB 801.9 MB
Events in quadrant A12,603,5335,679,688
Events in quadrant B13,204,8235,664,873
Events in quadrant C10,369,1215,638,443
Events in quadrant D13,004,6705,416,425

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09120
B09120
C09120
D09120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01096140
B01096310
C0963510
D01055270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4475610272.294664%
B4475619134.274287%
C447564701.050139%
D4475611892.656627%

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 50516 44758 42 42 0.08% 0.09%
B 50516 44753 45 45 0.09% 0.10%
C 50516 44758 20 20 0.04% 0.04%
D 50517 44759 162 162 0.32% 0.36%

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 13 251 1982443 3993.6 2296 2261 495.8
A 1 162 573344 1151.75 2296 2261 495.8
A 5 16 364454 730.46 2296 2261 495.8
B 4 239 2427802 5621.93 2284 2236 431.4
B 0 219 361973 833.79 2284 2236 431.4
B 0 229 254180 583.95 2284 2236 431.4
C 15 208 1108500 2220.4 2235 2212 498.2
C 1 16 248078 493.47 2235 2212 498.2
C 4 175 173145 343.07 2235 2212 498.2
D 1 52 2090581 3985.91 2250 2176 523.9
D 13 104 470775 894.36 2250 2176 523.9
D 10 199 311985 591.3 2250 2176 523.9

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