ASTROSAT CZTI

Data Quality Report

Orbit 49780

Creation date: 2024-12-11T10:43:15.779897
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_037T01_9000006440_49780cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49780cztM0_level2_quad_clean.evt
Size (bytes)1,062,921,60056,859,840
Size1013.7 MB 54.2 MB
Events in quadrant A7,464,276543,838
Events in quadrant B3,857,549662,886
Events in quadrant C11,890,13731,288
Events in quadrant D15,643,88941,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267081
B0156431
C0397571
D0507851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633295115.018951%
B63332353.710722%
C6333609196.178746%
D6333600494.804990%

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 7462 6333 763 763 10.23% 12.05%
B 7463 6334 98 98 1.31% 1.55%
C 7462 6329 2987 2987 40.03% 47.20%
D 7463 6333 5205 5205 69.74% 82.19%

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 63 721632 4251.02 662 645 169.6
A 12 50 568501 3348.14 662 645 169.6
A 7 64 549605 3236.73 662 645 169.6
B 1 207 426320 2873.07 693 672 148.2
B 5 185 128255 861.17 693 672 148.2
B 10 128 121571 816.05 693 672 148.2
C 15 147 6379015 127486.35 102 98 50.0
C 15 148 2060161 41171.55 102 98 50.0
C 1 23 649447 12977.62 102 98 50.0
D 15 142 4575557 47958.7 296 284 95.4
D 8 129 2483360 26027.97 296 284 95.4
D 15 168 1658950 17386.39 296 284 95.4

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