ASTROSAT CZTI

Data Quality Report

Orbit 54009

Creation date: 2025-09-23T15:38:32.368122
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/AS1A14_041T01_9000006510_54009cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54009cztM0_level2_quad_clean.evt
Size (bytes)625,412,16087,744,960
Size596.4 MB 83.7 MB
Events in quadrant A4,251,157598,027
Events in quadrant B3,476,139701,273
Events in quadrant C3,325,770617,201
Events in quadrant D11,591,494286,518

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175262
B0150452
C0145212
D03897614

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65135288.106863%
B65131281.965300%
C6513661.013358%
D6511344152.849025%

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 7653 6514 477 477 6.23% 7.32%
B 7653 6514 48 48 0.63% 0.74%
C 7653 6514 21 21 0.27% 0.32%
D 7652 6513 3131 3131 40.92% 48.07%

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 15 174 1475906 9051.52 653 637 163.0
A 8 6 99645 607.46 653 637 163.0
A 0 8 67124 407.93 653 637 163.0
B 0 213 269385 1846.16 690 667 145.6
B 5 250 122228 835.15 690 667 145.6
B 5 185 79409 540.98 690 667 145.6
C 12 250 295618 1560.92 683 677 189.0
C 13 3 81297 426.66 683 677 189.0
C 14 80 45254 235.91 683 677 189.0
D 8 176 9061801 71802.16 437 417 126.2
D 12 2 292791 2316.76 437 417 126.2
D 2 165 126502 999.09 437 417 126.2

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