ASTROSAT CZTI

Data Quality Report

Orbit 44723

Creation date: 2024-06-27T23:05:45.286478
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_009T01_9000006016_44723cztM0_level2.fits modeM0/AS1A13_009T01_9000006016_44723cztM0_level2_quad_clean.evt
Size (bytes)693,023,040111,000,960
Size660.9 MB 105.9 MB
Events in quadrant A7,707,498706,754
Events in quadrant B4,621,439775,912
Events in quadrant C3,233,894779,520
Events in quadrant D9,529,538593,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283653
B0187662
C0150822
D0333992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A724897713.479581%
B72484756.553532%
C7248350.482892%
D7248146220.171082%

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 7993 7249 574 574 7.18% 7.92%
B 7993 7249 304 304 3.80% 4.19%
C 7993 7249 2 2 0.03% 0.03%
D 7993 7249 1207 1207 15.10% 16.65%

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 15 223 2499512 15272.96 786 769 163.6
A 10 83 2124102 12978.36 786 769 163.6
A 7 3 19493 114.45 786 769 163.6
B 0 189 1011475 6287.63 804 776 160.7
B 4 171 254093 1575.9 804 776 160.7
B 5 255 99200 612.3 804 776 160.7
C 1 3 18196 90.12 812 818 192.8
C 2 14 16063 79.06 812 818 192.8
C 0 207 14962 73.35 812 818 192.8
D 13 174 3025104 16081.26 742 720 188.1
D 13 249 1474210 7834.84 742 720 188.1
D 1 52 1269596 6746.87 742 720 188.1

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