ASTROSAT CZTI

Data Quality Report

Orbit 20181105_A05_004T07_9000002492_level2

Creation date: 2018-11-06T17:43:21.198854
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_004T07_9000002492cztM0_level2_bc.evt modeM0/AS1A05_004T07_9000002492cztM0_level2_quad_clean.evt
Size (bytes)2,809,558,080783,786,240
Size2.6 GB 747.5 MB
Events in quadrant A19,482,4425,050,816
Events in quadrant B13,924,4475,183,158
Events in quadrant C16,952,7354,945,577
Events in quadrant D30,786,4194,585,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070
B01070
C01070
D01070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011820
B011820
C011820
D011820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01484830
B01270500
C01408840
D01931420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5792028944.996547%
B579209171.583218%
C5792012822.213398%
D57920609610.524862%

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 68596 57918 424 424 0.62% 0.73%
B 68596 57921 17 17 0.02% 0.03%
C 68596 57922 8 8 0.01% 0.01%
D 68596 57913 893 893 1.30% 1.54%

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 15 174 4438439 6603.99 3096 3034 671.6
A 10 234 2958033 4399.77 3096 3034 671.6
A 15 190 101632 146.8 3096 3034 671.6
B 15 35 575333 980.91 3139 3065 583.4
B 0 229 551205 939.55 3139 3065 583.4
B 0 189 212581 359.13 3139 3065 583.4
C 3 233 4469665 6410.09 2986 2969 696.8
C 0 207 709235 1013.55 2986 2969 696.8
C 7 247 297920 423.28 2986 2969 696.8
D 1 52 15703783 23088.09 2957 2863 680.0
D 12 110 1374962 2017.66 2957 2863 680.0
D 12 218 959070 1406.1 2957 2863 680.0

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