ASTROSAT CZTI

Data Quality Report

Orbit 43831

Creation date: 2024-06-27T22:56:19.345068
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_018T01_9000005906_43831cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43831cztM0_level2_quad_clean.evt
Size (bytes)766,932,480103,518,720
Size731.4 MB 98.7 MB
Events in quadrant A7,572,377652,482
Events in quadrant B5,910,262727,656
Events in quadrant C7,265,682666,854
Events in quadrant D7,098,693597,481

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275202
B0222762
C0265132
D0259665

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7020106015.099715%
B70206278.931624%
C702086712.350427%
D7019100614.332526%

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 7860 7021 934 934 11.88% 13.30%
B 7860 7020 454 454 5.78% 6.47%
C 7860 7021 666 666 8.47% 9.49%
D 7858 7018 882 882 11.22% 12.57%

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 3306655 21419.78 742 726 154.3
A 10 83 1011966 6552.03 742 726 154.3
A 0 175 268241 1733.28 742 726 154.3
B 0 200 1384981 9246.26 765 743 149.7
B 5 235 911007 6080.26 765 743 149.7
B 4 170 174307 1159.35 765 743 149.7
C 3 233 4225414 24266.99 740 746 174.1
C 15 158 73070 415.44 740 746 174.1
C 15 157 36536 205.58 740 746 174.1
D 5 235 2028123 10955.42 719 695 185.1
D 1 52 1120628 6051.67 719 695 185.1
D 5 222 270371 1457.22 719 695 185.1

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