ASTROSAT CZTI

Data Quality Report

Orbit 18633

Creation date: 2024-06-27T17:52:45.659440
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/AS1C04_001T01_9000002784_18633cztM0_level2.evt modeM0/AS1C04_001T01_9000002784_18633cztM0_level2_quad_clean.evt
Size (bytes)540,636,480134,694,720
Size515.6 MB 128.5 MB
Events in quadrant A3,548,062888,986
Events in quadrant B3,831,196904,112
Events in quadrant C3,794,108891,997
Events in quadrant D4,678,783860,662

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159362
B0166332
C0166212
D0193154

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7686510.663544%
B76861321.717408%
C76871862.419670%
D76862092.719230%

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 8401 7689 0 0 0.00% 0.00%
B 8401 7689 13 13 0.15% 0.17%
C 8402 7690 1 1 0.01% 0.01%
D 8401 7688 109 109 1.30% 1.42%

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 13 254 11615 58.0 914 892 184.9
A 11 29 11580 57.81 914 892 184.9
A 0 226 8040 38.66 914 892 184.9
B 0 230 82996 469.41 919 896 174.9
B 7 220 60926 343.23 919 896 174.9
B 0 197 22819 125.35 919 896 174.9
C 14 238 138598 658.72 895 900 209.0
C 3 233 105880 502.2 895 900 209.0
C 9 54 33221 154.62 895 900 209.0
D 1 52 762543 3535.11 891 866 215.5
D 7 238 330050 1527.81 891 866 215.5
D 14 34 110544 509.04 891 866 215.5

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