ASTROSAT CZTI

Data Quality Report

Orbit 54623

Creation date: 2025-11-02T12:39:25.680455
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/AS1A14_066T07_9000006522_54623cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54623cztM0_level2_quad_clean.evt
Size (bytes)491,241,600128,545,920
Size468.5 MB 122.6 MB
Events in quadrant A4,528,838837,500
Events in quadrant B3,943,566900,793
Events in quadrant C4,524,162790,902
Events in quadrant D4,492,964743,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200450
B0184870
C0202530
D0199730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89331361.522445%
B8934190.212671%
C89341141.276024%
D89341591.779718%

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 8933 8933 124 124 1.39% 1.39%
B 8933 8933 3 3 0.03% 0.03%
C 8934 8934 100 100 1.12% 1.12%
D 8934 8934 171 171 1.91% 1.91%

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 11 3 366114 1531.97 958 934 238.4
A 0 8 137195 571.63 958 934 238.4
A 13 248 58004 239.41 958 934 238.4
B 10 247 67936 321.59 956 922 208.4
B 10 14 42678 200.38 956 922 208.4
B 12 111 26051 120.59 956 922 208.4
C 13 3 515693 2000.34 932 927 257.3
C 12 249 103028 396.76 932 927 257.3
C 14 96 66609 255.23 932 927 257.3
D 2 252 339406 1293.05 919 878 261.8
D 2 62 187583 713.14 919 878 261.8
D 2 172 167101 634.91 919 878 261.8

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