ASTROSAT CZTI

Data Quality Report

Orbit 36937

Creation date: 2024-06-27T21:33:21.248501
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/AS1A11_087T05_9000005248_36937cztM0_level2.evt modeM0/AS1A11_087T05_9000005248_36937cztM0_level2_quad_clean.evt
Size (bytes)1,928,185,920273,484,800
Size1.8 GB 260.8 MB
Events in quadrant A12,712,4501,628,416
Events in quadrant B13,818,6061,646,172
Events in quadrant C13,553,2961,622,594
Events in quadrant D16,512,7261,553,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546535
B0583715
C0563185
D0673315

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05420
B05420
C05420
D05420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26639540.202710%
B266392841.066106%
C266391540.578100%
D2663911514.320733%

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 33684 26644 15 15 0.04% 0.06%
B 33684 26644 160 160 0.48% 0.60%
C 33684 26644 122 122 0.36% 0.46%
D 33684 26644 1040 1040 3.09% 3.90%

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 876140 1442.11 3021 2959 605.5
A 15 174 100146 160.51 3021 2959 605.5
A 13 6 45853 70.84 3021 2959 605.5
B 0 229 608258 1057.08 2992 2907 572.7
B 5 172 434928 754.4 2992 2907 572.7
B 0 182 209705 361.12 2992 2907 572.7
C 15 214 1123575 1648.29 2935 2957 679.9
C 0 10 671457 983.28 2935 2957 679.9
C 15 159 152707 220.26 2935 2957 679.9
D 12 233 2322162 3260.12 2907 2825 711.4
D 12 17 1155476 1620.2 2907 2825 711.4
D 2 153 376843 525.73 2907 2825 711.4

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