ASTROSAT CZTI

Data Quality Report

Orbit 20190520_A05_075T03_9000002940_level2

Creation date: 2019-05-21T10:02:08.622219
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/AS1A05_075T03_9000002940cztM0_level2_bc.evt modeM0/AS1A05_075T03_9000002940cztM0_level2_quad_clean.evt
Size (bytes)490,717,440190,788,480
Size468.0 MB 182.0 MB
Events in quadrant A2,888,8481,238,494
Events in quadrant B2,972,8441,246,922
Events in quadrant C2,782,5151,191,675
Events in quadrant D5,263,3141,142,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289570
B0290930
C0285500
D0374000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138921831.317305%
B138922161.554852%
C138922401.727613%
D138928686.248200%

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 14667 13891 1 1 0.01% 0.01%
B 14667 13892 3 3 0.02% 0.02%
C 14667 13892 0 0 0.00% 0.00%
D 14667 13891 78 78 0.53% 0.56%

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 5 16 222841 1441.15 684 669 154.2
A 13 210 24122 152.13 684 669 154.2
A 13 254 7463 44.07 684 669 154.2
B 7 220 83855 619.03 689 671 134.4
B 4 216 51718 379.87 689 671 134.4
B 0 198 42983 314.87 689 671 134.4
C 3 233 183616 1150.81 659 652 159.0
C 7 247 42431 262.78 659 652 159.0
C 8 208 8336 48.33 659 652 159.0
D 7 238 1316250 8357.13 660 636 157.4
D 1 52 895852 5686.65 660 636 157.4
D 1 20 193614 1225.85 660 636 157.4

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