ASTROSAT CZTI

Data Quality Report

Orbit 52474

Creation date: 2025-06-26T16:02:58.975079
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/AS1A13_037T01_9000006476_52474cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52474cztM0_level2_quad_clean.evt
Size (bytes)1,183,965,12078,125,760
Size1.1 GB 74.5 MB
Events in quadrant A4,387,697726,037
Events in quadrant B7,701,483719,722
Events in quadrant C12,362,369378,599
Events in quadrant D18,776,8952,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182350
B0282640
C0420260
D0610300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7738991.279400%
B773984510.918723%
C7738362046.782114%
D7738772199.780305%

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 7738 7738 39 39 0.50% 0.50%
B 7739 7739 374 374 4.83% 4.83%
C 7738 7737 2911 2911 37.62% 37.62%
D 7737 7736 6881 6881 88.94% 88.95%

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 8 249 426969 2035.32 846 823 209.4
A 10 17 162118 770.36 846 823 209.4
A 12 17 102201 484.19 846 823 209.4
B 10 254 2874789 16227.62 814 784 177.1
B 7 0 473660 2670.02 814 784 177.1
B 4 171 322257 1815.15 814 784 177.1
C 15 224 7065168 42296.41 614 610 167.0
C 0 209 2081194 12456.72 614 610 167.0
C 2 12 186855 1115.07 614 610 167.0
D 15 93 16737168 319746.86 175 166 52.3
D 6 42 1073367 20502.64 175 166 52.3
D 12 17 50006 952.15 175 166 52.3

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