ASTROSAT CZTI

Data Quality Report

Orbit 45686

Creation date: 2024-06-27T23:15:02.728753
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_071T05_9000006120_45686cztM0_level2.fits modeM0/AS1A13_071T05_9000006120_45686cztM0_level2_quad_clean.evt
Size (bytes)527,616,000112,236,480
Size503.2 MB 107.0 MB
Events in quadrant A6,091,801737,720
Events in quadrant B3,885,946767,690
Events in quadrant C4,682,793735,168
Events in quadrant D4,320,301663,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227072
B0163232
C0189052
D0176772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70931752.467221%
B70931552.185253%
C70931141.607218%
D70922082.932882%

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 7878 7093 2 2 0.03% 0.03%
B 7878 7093 46 46 0.58% 0.65%
C 7878 7093 23 23 0.29% 0.32%
D 7877 7092 143 143 1.82% 2.02%

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 2950749 17832.25 791 775 165.4
A 2 79 40750 241.64 791 775 165.4
A 13 248 24571 143.84 791 775 165.4
B 5 255 502685 3155.63 795 767 159.1
B 5 172 89842 560.03 795 767 159.1
B 3 112 58740 364.48 795 767 159.1
C 9 54 1424159 7678.16 782 785 185.4
C 14 254 119595 640.9 782 785 185.4
C 8 111 41891 221.74 782 785 185.4
D 1 52 475937 2399.5 775 749 198.0
D 11 241 407970 2056.29 775 749 198.0
D 13 249 167221 840.61 775 749 198.0

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