ASTROSAT CZTI

Data Quality Report

Orbit 39462

Creation date: 2024-06-27T22:04:50.302762
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_044T16_9000005478_39462cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39462cztM0_level2_quad_clean.evt
Size (bytes)376,646,40090,979,200
Size359.2 MB 86.8 MB
Events in quadrant A4,629,719604,767
Events in quadrant B2,579,398641,596
Events in quadrant C3,179,366601,286
Events in quadrant D3,153,642546,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175643
B0109602
C0124832
D0128122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51482144.156954%
B5148360.699301%
C5148901.748252%
D51481072.078477%

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 7302 5149 177 177 2.42% 3.44%
B 7302 5149 17 17 0.23% 0.33%
C 7302 5149 78 78 1.07% 1.51%
D 7302 5149 81 81 1.11% 1.57%

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 1846880 15401.72 590 578 119.9
A 10 83 418072 3482.71 590 578 119.9
A 15 174 45324 373.27 590 578 119.9
B 8 3 117907 1015.47 596 581 115.5
B 5 172 111869 963.21 596 581 115.5
B 12 111 14407 119.67 596 581 115.5
C 15 208 662963 4814.85 587 593 137.6
C 15 214 217329 1575.48 587 593 137.6
C 0 10 6627 43.86 587 593 137.6
D 2 249 326586 2293.75 577 562 142.1
D 12 248 196391 1377.76 577 562 142.1
D 1 47 178905 1254.74 577 562 142.1

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