ASTROSAT CZTI

Data Quality Report

Orbit 49819

Creation date: 2024-12-14T02:03:28.755237
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_49819cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49819cztM0_level2_quad_clean.evt
Size (bytes)2,911,625,280114,560,640
Size2.7 GB 109.3 MB
Events in quadrant A32,688,864606,002
Events in quadrant B10,019,7601,603,709
Events in quadrant C25,701,500101,874
Events in quadrant D38,076,5261,907

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01085561
B0413191
C0881331
D01244011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167391050462.751658%
B167397144.265488%
C167401576294.157706%
D167401672799.922342%

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 17043 16738 10201 10201 59.85% 60.95%
B 17043 16738 521 521 3.06% 3.11%
C 17044 16739 4048 4048 23.75% 24.18%
D 17044 16739 14367 14367 84.29% 85.83%

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 16891397 51928.6 1173 1135 325.3
A 12 50 1695091 5208.02 1173 1135 325.3
A 3 99 1507431 4631.06 1173 1135 325.3
B 10 44 1418172 3847.76 1746 1687 368.1
B 1 255 293252 792.01 1746 1687 368.1
B 4 206 286736 774.31 1746 1687 368.1
C 15 147 9604568 70919.88 323 313 135.4
C 15 197 4565758 33712.23 323 313 135.4
C 15 174 1209527 8929.1 323 313 135.4
D 7 61 8447797 43222.26 514 486 195.4
D 7 126 3260071 16678.28 514 486 195.4
D 15 168 2680317 13711.86 514 486 195.4

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