ASTROSAT CZTI

Data Quality Report

Orbit 28819

Creation date: 2024-06-27T19:56:46.604164
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/AS1A10_121T01_9000004134_28819cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28819cztM0_level2_quad_clean.evt
Size (bytes)644,641,920109,811,520
Size614.8 MB 104.7 MB
Events in quadrant A3,055,204741,952
Events in quadrant B3,232,874779,031
Events in quadrant C3,815,411739,707
Events in quadrant D9,013,177644,999

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126071
B0131931
C0154641
D0310331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6011210.349360%
B6012440.731870%
C60121272.112442%
D6011186030.943271%

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 7346 6012 2 2 0.03% 0.03%
B 7347 6012 1 1 0.01% 0.02%
C 7347 6012 0 0 0.00% 0.00%
D 7346 6011 1862 1862 25.35% 30.98%

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 13 254 12115 73.26 783 771 154.8
A 13 170 8194 47.94 783 771 154.8
A 3 137 6672 38.11 783 771 154.8
B 10 245 66414 451.99 793 775 145.2
B 5 172 19413 128.34 793 775 145.2
B 12 111 16296 106.88 793 775 145.2
C 3 233 604561 3373.67 778 786 179.0
C 14 238 137058 761.44 778 786 179.0
C 1 16 18625 99.68 778 786 179.0
D 8 195 5283826 31377.33 703 685 168.4
D 1 52 639708 3795.25 703 685 168.4
D 7 80 273372 1619.53 703 685 168.4

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