ASTROSAT CZTI

Data Quality Report

Orbit 54753

Creation date: 2025-11-11T07:10:04.110375
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_103T01_9000006524_54753cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54753cztM0_level2_quad_clean.evt
Size (bytes)578,502,720111,291,840
Size551.7 MB 106.1 MB
Events in quadrant A3,795,887740,940
Events in quadrant B7,096,158721,104
Events in quadrant C4,915,589694,191
Events in quadrant D4,989,554660,563

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172931
B0265551
C0203751
D0206021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139938439325736139934329471022
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7952811.018612%
B795295812.047284%
C79522693.382797%
D79521461.836016%

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 7951 7951 53 53 0.67% 0.67%
B 7951 7951 861 861 10.83% 10.83%
C 7951 7951 276 276 3.47% 3.47%
D 7951 7951 135 135 1.70% 1.70%

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 0 8 108899 513.76 840 820 210.4
A 3 114 101623 479.17 840 820 210.4
A 3 14 92959 437.99 840 820 210.4
B 2 249 2825634 16511.35 793 765 171.1
B 0 213 390758 2279.51 793 765 171.1
B 5 185 357943 2087.7 793 765 171.1
C 4 5 860139 3833.14 811 802 224.2
C 13 3 540623 2407.91 811 802 224.2
C 6 223 85102 376.03 811 802 224.2
D 11 129 864811 3744.94 807 771 230.7
D 10 181 405333 1753.46 807 771 230.7
D 6 239 167917 724.45 807 771 230.7

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