ASTROSAT CZTI

Data Quality Report

Orbit 20190916_A05_117T01_9000003166_level2

Creation date: 2019-09-18T10:44:47.300767
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_117T01_9000003166cztM0_level2_bc.evt modeM0/AS1A05_117T01_9000003166cztM0_level2_quad_clean.evt
Size (bytes)1,542,994,560551,903,040
Size1.4 GB 526.3 MB
Events in quadrant A8,821,5503,516,078
Events in quadrant B8,787,2283,547,588
Events in quadrant C8,554,9683,409,955
Events in quadrant D17,648,1723,306,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08760
B08760
C08760
D08760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0883500
B0886110
C0890470
D01151150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A427544210.984703%
B427545461.277073%
C427546211.452496%
D4275416083.761052%

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 47999 42751 0 0 0.00% 0.00%
B 47999 42745 2 2 0.00% 0.00%
C 47999 42747 5 5 0.01% 0.01%
D 47998 42745 521 521 1.09% 1.22%

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 11 47 299553 614.47 2206 2164 484.0
A 13 254 59687 118.85 2206 2164 484.0
A 0 226 13995 24.45 2206 2164 484.0
B 0 197 138796 321.59 2219 2162 424.9
B 3 64 56114 126.99 2219 2162 424.9
B 0 230 47086 105.74 2219 2162 424.9
C 3 233 361003 715.65 2124 2112 501.5
C 8 128 17523 30.73 2124 2112 501.5
C 13 61 12008 19.73 2124 2112 501.5
D 12 235 6442682 12957.29 2161 2088 497.1
D 1 52 949557 1906.13 2161 2088 497.1
D 14 35 580909 1164.48 2161 2088 497.1

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