ASTROSAT CZTI

Data Quality Report

Orbit 20171119_A04_130T04_9000001704_level2

Creation date: 2018-01-09T06:12:18.130812
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/AS1A04_130T04_9000001704cztM0_level2_bc.evt modeM0/AS1A04_130T04_9000001704cztM0_level2_quad_clean.evt
Size (bytes)2,373,137,280490,556,160
Size2.2 GB 467.8 MB
Events in quadrant A28,956,7932,813,767
Events in quadrant B15,275,9583,142,922
Events in quadrant C7,948,7683,154,372
Events in quadrant D16,945,0492,977,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01718420
B01135740
C0824690
D01125400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08220
B08220
C08220
D08220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40281965823.976565%
B4028130077.465058%
C402813800.943373%
D4028127116.730220%

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 45841 40281 960 960 2.09% 2.38%
B 45841 40281 52 52 0.11% 0.13%
C 45841 40283 0 0 0.00% 0.00%
D 45841 40282 118 118 0.26% 0.29%

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 8 5 20938008 51639.84 1864 1830 405.4
A 1 162 474290 1165.34 1864 1830 405.4
A 1 178 70791 170.09 1864 1830 405.4
B 4 239 4504919 11649.18 2035 1981 386.5
B 3 64 1494264 3860.56 2035 1981 386.5
B 11 51 417306 1074.45 2035 1981 386.5
C 12 4 16384 32.64 2022 1990 441.0
C 13 61 12271 23.31 2022 1990 441.0
C 9 54 11078 20.6 2022 1990 441.0
D 13 122 4129039 8874.12 2013 1942 465.1
D 1 52 2001912 4300.35 2013 1942 465.1
D 8 195 1369278 2940.06 2013 1942 465.1

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