ASTROSAT CZTI

Data Quality Report

Orbit 13391

Creation date: 2024-06-27T16:40:05.852138
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_103T01_9000001988_13391cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13391cztM0_level2_quad_clean.evt
Size (bytes)534,695,040107,740,800
Size509.9 MB 102.7 MB
Events in quadrant A3,752,588689,468
Events in quadrant B3,993,929707,249
Events in quadrant C3,937,457680,591
Events in quadrant D3,980,163643,551

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163303
B0169852
C0168792
D0174232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7795600.769724%
B77951311.680564%
C7795400.513149%
D7795821.051956%

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 9931 7798 1 1 0.01% 0.01%
B 9931 7798 22 22 0.22% 0.28%
C 9931 7798 8 8 0.08% 0.10%
D 9931 7798 35 35 0.35% 0.45%

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 15 222 30010 149.68 955 933 194.3
A 1 162 20385 100.13 955 933 194.3
A 15 69 16252 78.86 955 933 194.3
B 10 244 75558 408.88 962 938 182.5
B 10 245 58653 316.25 962 938 182.5
B 3 64 51694 278.12 962 938 182.5
C 14 220 182195 844.34 928 933 214.7
C 3 233 137199 634.75 928 933 214.7
C 13 61 6851 27.57 928 933 214.7
D 1 52 335780 1540.75 913 888 217.4
D 5 222 130656 597.03 913 888 217.4
D 2 234 27372 121.85 913 888 217.4

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