ASTROSAT CZTI

Data Quality Report

Orbit 20191029_T03_146T01_9000003272_level2

Creation date: 2019-10-30T16:25:34.264010
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_146T01_9000003272cztM0_level2_bc.evt modeM0/AS1T03_146T01_9000003272cztM0_level2_quad_clean.evt
Size (bytes)2,120,376,960741,384,000
Size2.0 GB 707.0 MB
Events in quadrant A11,638,9284,920,896
Events in quadrant B12,546,9334,975,421
Events in quadrant C12,536,9734,660,518
Events in quadrant D24,004,4094,386,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010460
B010460
C010460
D010460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01095720
B01127890
C01141210
D01560170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511887351.435883%
B511889741.902790%
C511889411.838321%
D5118838117.445104%

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 61323 51192 3 3 0.00% 0.01%
B 61323 51189 39 39 0.06% 0.08%
C 61323 51191 3 3 0.00% 0.01%
D 61323 51190 588 588 0.96% 1.15%

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 14 235 178263 279.84 2921 2876 626.7
A 15 174 153622 240.53 2921 2876 626.7
A 13 254 83003 127.85 2921 2876 626.7
B 3 64 594942 1076.5 2941 2878 550.0
B 0 197 175931 314.65 2941 2878 550.0
B 0 190 142560 253.97 2941 2878 550.0
C 0 239 1730338 2667.88 2750 2737 647.6
C 9 54 110848 166.95 2750 2737 647.6
C 10 22 102761 154.46 2750 2737 647.6
D 1 52 11866929 18576.49 2748 2659 638.7
D 2 16 465000 723.91 2748 2659 638.7
D 13 172 287089 445.35 2748 2659 638.7

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