ASTROSAT CZTI

Data Quality Report

Orbit 32733

Creation date: 2024-06-27T20:41:22.413690
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_123T04_9000004726_32733cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32733cztM0_level2_quad_clean.evt
Size (bytes)685,661,76060,958,080
Size653.9 MB 58.1 MB
Events in quadrant A6,590,038352,106
Events in quadrant B5,325,565362,753
Events in quadrant C2,969,530375,367
Events in quadrant D5,487,857348,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234273
B0196682
C0125872
D0202952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581992215.844647%
B581959710.259495%
C5819170.292146%
D58194387.527067%

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 7193 5820 786 786 10.93% 13.51%
B 7193 5820 456 456 6.34% 7.84%
C 7193 5820 10 10 0.14% 0.17%
D 7193 5820 373 373 5.19% 6.41%

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 15 249 4011940 30669.7 647 635 130.8
A 15 237 59739 451.9 647 635 130.8
A 13 254 10645 76.53 647 635 130.8
B 12 1 2276034 18192.86 660 646 125.1
B 8 128 98847 785.17 660 646 125.1
B 0 199 85088 675.16 660 646 125.1
C 3 233 238122 1552.04 659 663 153.0
C 0 10 62657 405.19 659 663 153.0
C 0 239 56929 367.76 659 663 153.0
D 2 250 550466 3654.17 638 625 150.5
D 8 195 533582 3541.96 638 625 150.5
D 2 249 352957 2341.55 638 625 150.5

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