ASTROSAT CZTI

Data Quality Report

Orbit 46478

Creation date: 2024-06-27T23:23:39.510268
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A13_037T05_9000006216_46478cztM0_level2.fits modeM0/AS1A13_037T05_9000006216_46478cztM0_level2_quad_clean.evt
Size (bytes)566,821,440121,910,400
Size540.6 MB 116.3 MB
Events in quadrant A7,212,750795,720
Events in quadrant B3,899,469824,049
Events in quadrant C3,520,564824,692
Events in quadrant D5,762,644720,878

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262101
B0167021
C0158901
D0222931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75634185.526907%
B75633194.217903%
C75641001.322052%
D75644746.266526%

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 7723 7564 40 40 0.52% 0.53%
B 7723 7564 20 20 0.26% 0.26%
C 7724 7565 0 0 0.00% 0.00%
D 7724 7565 277 277 3.59% 3.66%

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 10 83 3326559 18068.74 885 866 184.1
A 2 79 223967 1212.12 885 866 184.1
A 15 235 148647 802.91 885 866 184.1
B 5 32 203466 1139.94 883 855 177.7
B 5 172 57814 320.47 883 855 177.7
B 0 190 48175 266.23 883 855 177.7
C 3 233 38911 182.46 881 887 208.4
C 9 54 37712 176.7 881 887 208.4
C 12 249 11020 48.62 881 887 208.4
D 1 52 1151436 5217.43 865 838 220.5
D 2 249 407780 1845.29 865 838 220.5
D 13 249 342176 1547.81 865 838 220.5

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