ASTROSAT CZTI

Data Quality Report

Orbit 14634

Creation date: 2024-06-27T16:57:46.678224
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/AS1A04_043T01_9000002156_14634cztM0_level2.evt modeM0/AS1A04_043T01_9000002156_14634cztM0_level2_quad_clean.evt
Size (bytes)607,662,720114,606,720
Size579.5 MB 109.3 MB
Events in quadrant A3,641,909770,121
Events in quadrant B3,683,877773,357
Events in quadrant C6,214,396753,604
Events in quadrant D4,431,670728,853

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151243
B0152572
C0229762
D0176492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63811081.692525%
B63811742.726845%
C63812293.588779%
D638166910.484250%

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 9032 6384 4 4 0.04% 0.06%
B 9032 6383 17 17 0.19% 0.27%
C 9032 6383 6 6 0.07% 0.09%
D 9031 6382 87 87 0.96% 1.36%

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 8 15 123609 744.14 824 807 165.0
A 1 162 117340 706.15 824 807 165.0
A 0 23 54973 328.23 824 807 165.0
B 0 189 163469 1066.56 825 805 152.5
B 0 230 114525 745.64 825 805 152.5
B 0 229 35147 225.17 825 805 152.5
C 3 233 3037077 16565.41 807 814 183.3
C 3 234 12091 61.53 807 814 183.3
C 14 234 9958 49.89 807 814 183.3
D 13 122 811932 4058.69 791 773 199.9
D 10 199 203095 1012.33 791 773 199.9
D 12 110 106194 527.48 791 773 199.9

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