ASTROSAT CZTI

Data Quality Report

Orbit 50147

Creation date: 2025-01-05T10:44:54.611656
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/AS1C09_003T01_9000006442_50147cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50147cztM0_level2_quad_clean.evt
Size (bytes)1,042,680,96073,681,920
Size994.4 MB 70.3 MB
Events in quadrant A7,254,610540,942
Events in quadrant B3,769,085693,112
Events in quadrant C15,102,612139,142
Events in quadrant D11,936,370375,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262093
B0161013
C0496063
D0402963

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6911131819.071046%
B69121642.372685%
C6911561081.174939%
D6911288641.759514%

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 7701 6912 1106 1106 14.36% 16.00%
B 7702 6914 66 66 0.86% 0.95%
C 7701 6912 4728 4728 61.39% 68.40%
D 7700 6912 2724 2724 35.38% 39.41%

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 0 98 2497122 14842.24 672 658 168.2
A 8 8 310040 1839.37 672 658 168.2
A 12 250 283421 1681.11 672 658 168.2
B 4 206 171004 1119.84 713 687 152.1
B 0 213 90852 592.84 713 687 152.1
B 5 185 79258 516.61 713 687 152.1
C 4 111 8827000 91452.41 345 343 96.5
C 15 147 1109844 11495.47 345 343 96.5
C 15 213 989783 10251.52 345 343 96.5
D 15 168 3362145 19811.87 598 579 169.7
D 15 106 1892879 11152.54 598 579 169.7
D 12 6 586611 3453.86 598 579 169.7

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