ASTROSAT CZTI

Data Quality Report

Orbit 46444

Creation date: 2024-06-27T23:23:17.101327
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_062T01_9000006208_46444cztM0_level2.fits modeM0/AS1A13_062T01_9000006208_46444cztM0_level2_quad_clean.evt
Size (bytes)451,733,760112,944,960
Size430.8 MB 107.7 MB
Events in quadrant A5,839,349749,749
Events in quadrant B3,280,807784,217
Events in quadrant C3,008,422750,689
Events in quadrant D4,092,554685,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213684
B0138372
C0132412
D0165188

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64491712.651574%
B6450981.519380%
C6450430.666667%
D64491722.667080%

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 7585 6450 6 6 0.08% 0.09%
B 7585 6451 14 14 0.18% 0.22%
C 7585 6451 1 1 0.01% 0.02%
D 7585 6451 118 118 1.56% 1.83%

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 10 83 2836524 17699.07 767 753 160.2
A 3 7 34094 208.09 767 753 160.2
A 13 254 10998 63.94 767 753 160.2
B 0 189 147237 979.85 764 743 149.5
B 0 190 56363 372.03 764 743 149.5
B 7 219 33721 220.58 764 743 149.5
C 9 54 24600 136.2 750 755 175.1
C 3 233 24373 134.9 750 755 175.1
C 1 3 13681 73.83 750 755 175.1
D 13 249 594039 3224.0 748 727 184.0
D 1 52 484035 2626.25 748 727 184.0
D 8 176 97944 528.27 748 727 184.0

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