ASTROSAT CZTI

Data Quality Report

Orbit 50814

Creation date: 2025-02-19T01:04:50.966831
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/AS1C07_001T01_9000006450_50814cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50814cztM0_level2_quad_clean.evt
Size (bytes)580,847,04093,355,200
Size553.9 MB 89.0 MB
Events in quadrant A5,994,580568,276
Events in quadrant B5,559,981641,588
Events in quadrant C4,177,577605,407
Events in quadrant D5,260,954554,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223252
B0209972
C0169272
D0200712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A655392314.085152%
B655471510.909368%
C65531612.456890%
D65533875.905692%

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 7603 6554 790 790 10.39% 12.05%
B 7604 6555 550 550 7.23% 8.39%
C 7603 6554 109 109 1.43% 1.66%
D 7603 6554 314 314 4.13% 4.79%

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 14 254 1307862 7946.55 669 654 164.5
A 12 80 1020938 6202.33 669 654 164.5
A 4 191 348011 2111.59 669 654 164.5
B 4 206 1097921 7622.95 679 655 143.9
B 5 79 1022181 7096.77 679 655 143.9
B 8 128 241479 1673.06 679 655 143.9
C 10 171 289749 1519.66 697 689 190.2
C 1 60 232579 1219.1 697 689 190.2
C 9 38 171698 899.04 697 689 190.2
D 2 249 396997 2098.14 678 653 188.9
D 15 123 308562 1629.99 678 653 188.9
D 2 216 270151 1426.65 678 653 188.9

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