ASTROSAT CZTI

Data Quality Report

Orbit 51819

Creation date: 2025-04-27T18:25:09.069227
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_090T01_9000006464_51819cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51819cztM0_level2_quad_clean.evt
Size (bytes)713,059,200103,276,800
Size680.0 MB 98.5 MB
Events in quadrant A5,200,140675,787
Events in quadrant B5,522,598741,404
Events in quadrant C5,722,678665,278
Events in quadrant D9,363,723517,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205850
B0216321
C0222860
D0330200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75733494.608477%
B75723134.133650%
C75723224.252509%
D7572165621.870048%

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 7573 7573 261 261 3.45% 3.45%
B 7572 7572 124 124 1.64% 1.64%
C 7572 7572 190 190 2.51% 2.51%
D 7572 7572 1501 1501 19.82% 19.82%

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 1253102 6357.11 809 789 197.0
A 5 240 117352 591.71 809 789 197.0
A 12 3 94613 476.28 809 789 197.0
B 10 128 554212 3170.9 804 772 174.5
B 5 32 361652 2067.64 804 772 174.5
B 4 170 268112 1531.71 804 772 174.5
C 9 38 650648 2971.36 790 783 218.7
C 15 219 418861 1911.56 790 783 218.7
C 15 192 320689 1462.7 790 783 218.7
D 11 129 5053007 25445.19 719 693 198.6
D 3 12 623189 3135.1 719 693 198.6
D 0 18 300872 1511.8 719 693 198.6

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