ASTROSAT CZTI

Data Quality Report

Orbit 42080

Creation date: 2024-06-27T22:36:35.085605
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/AS1A12_044T22_9000005740_42080cztM0_level2.fits modeM0/AS1A12_044T22_9000005740_42080cztM0_level2_quad_clean.evt
Size (bytes)353,059,20088,087,680
Size336.7 MB 84.0 MB
Events in quadrant A4,930,968572,562
Events in quadrant B2,468,498610,999
Events in quadrant C2,495,143581,371
Events in quadrant D2,761,289530,159

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181093
B0110462
C0106882
D0119602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53073516.613906%
B5307450.847937%
C530760.113058%
D5307891.677030%

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 8711 5309 256 256 2.94% 4.82%
B 8711 5309 12 12 0.14% 0.23%
C 8711 5309 0 0 0.00% 0.00%
D 8711 5309 66 66 0.76% 1.24%

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 15 222 2106361 17351.25 585 573 121.4
A 10 83 531879 4377.85 585 573 121.4
A 15 223 15285 121.22 585 573 121.4
B 3 112 46734 399.94 592 577 115.4
B 5 255 39779 339.68 592 577 115.4
B 5 168 16031 133.91 592 577 115.4
C 15 214 219746 1598.37 583 586 137.1
C 13 61 3770 23.22 583 586 137.1
C 12 249 3282 19.66 583 586 137.1
D 12 6 261513 1834.15 576 559 142.3
D 13 249 109518 765.83 576 559 142.3
D 10 199 74765 521.57 576 559 142.3

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