ASTROSAT CZTI

Data Quality Report

Orbit 42431

Creation date: 2024-06-27T22:40:05.792736
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/AS1C07_001T10_9000005806_42431cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42431cztM0_level2_quad_clean.evt
Size (bytes)426,168,00082,699,200
Size406.4 MB 78.9 MB
Events in quadrant A3,802,731604,173
Events in quadrant B5,542,738438,859
Events in quadrant C2,406,105582,852
Events in quadrant D3,637,650530,710

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145052
B0197642
C0101092
D0140342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49611943.910502%
B4961152430.719613%
C496160.120943%
D49612665.361822%

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 7054 4962 179 179 2.54% 3.61%
B 7054 4962 1240 1240 17.58% 24.99%
C 7054 4962 3 3 0.04% 0.06%
D 7054 4962 215 215 3.05% 4.33%

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 14 223 938565 8239.54 565 557 113.8
A 10 83 566047 4967.31 565 557 113.8
A 13 248 82656 721.16 565 557 113.8
B 0 186 3602089 40177.85 472 460 89.6
B 5 172 29391 322.74 472 460 89.6
B 5 255 21243 231.84 472 460 89.6
C 15 214 211825 1684.96 547 550 125.4
C 14 254 18415 142.48 547 550 125.4
C 7 220 17614 136.09 547 550 125.4
D 1 52 436344 3306.29 545 531 131.8
D 10 118 316339 2395.87 545 531 131.8
D 2 16 262621 1988.34 545 531 131.8

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