ASTROSAT CZTI

Data Quality Report

Orbit 43812

Creation date: 2024-06-27T22:56:05.288299
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_018T01_9000005906_43812cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43812cztM0_level2_quad_clean.evt
Size (bytes)853,914,240108,521,280
Size814.4 MB 103.5 MB
Events in quadrant A6,385,761765,048
Events in quadrant B5,126,373820,671
Events in quadrant C9,570,243619,517
Events in quadrant D9,949,251560,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245320
B0202420
C0335482
D0346600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74686298.422603%
B74693704.953809%
C7468204727.410284%
D7468211328.294055%

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 7468 7468 451 451 6.04% 6.04%
B 7469 7469 197 197 2.64% 2.64%
C 7468 7468 1847 1847 24.73% 24.73%
D 7468 7468 1961 1961 26.26% 26.26%

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 15 223 1695077 9735.93 835 817 174.0
A 10 83 1020508 5859.58 835 817 174.0
A 13 248 155488 888.8 835 817 174.0
B 0 200 705996 4238.26 844 821 166.4
B 5 172 322513 1933.44 844 821 166.4
B 4 170 223572 1338.78 844 821 166.4
C 15 174 4673395 25849.22 763 769 180.8
C 15 158 851649 4707.11 763 769 180.8
C 3 233 300380 1657.46 763 769 180.8
D 10 102 3268382 17895.85 719 696 182.6
D 1 52 1976867 10822.72 719 696 182.6
D 5 235 427775 2338.95 719 696 182.6

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