ASTROSAT CZTI

Data Quality Report

Orbit 08646

Creation date: 2024-06-27T15:35:25.098735
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/AS1G07_024T01_9000001206_08646cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08646cztM0_level2_quad_clean.evt
Size (bytes)485,478,720120,240,000
Size463.0 MB 114.7 MB
Events in quadrant A3,082,080800,239
Events in quadrant B3,289,475828,002
Events in quadrant C4,402,281756,628
Events in quadrant D3,455,331771,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01436515
B01458120
C01818267
D01559447

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01402
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69781171.676698%
B69751021.462366%
C69676188.870389%
D69671041.492752%

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 7195 6986 9 9 0.13% 0.13%
B 7195 6986 7 7 0.10% 0.10%
C 7195 6981 491 491 6.82% 7.03%
D 7195 6986 42 42 0.58% 0.60%

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 51155 314.21 781 762 160.4
A 5 16 18175 108.57 781 762 160.4
A 0 226 7471 41.83 781 762 160.4
B 0 219 57430 375.02 791 772 151.1
B 4 48 33485 216.53 791 772 151.1
B 10 252 32536 210.25 791 772 151.1
C 4 254 1574077 9497.06 717 717 165.7
C 8 128 8298 45.76 717 717 165.7
C 4 238 6617 35.61 717 717 165.7
D 1 52 368109 1991.06 755 729 184.5
D 10 253 115715 623.18 755 729 184.5
D 7 71 32625 172.86 755 729 184.5

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