ASTROSAT CZTI

Data Quality Report

Orbit 06947

Creation date: 2024-06-27T15:13:32.533530
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/AS1A02_103T01_9000000950_06947cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06947cztM0_level2_quad_clean.evt
Size (bytes)633,127,68057,303,360
Size603.8 MB 54.6 MB
Events in quadrant A3,165,103333,155
Events in quadrant B3,574,686334,825
Events in quadrant C7,966,094320,116
Events in quadrant D4,045,993310,819

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131282
B0145161
C0281021
D0164391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6245871.393114%
B62451241.985588%
C6245168126.917534%
D62452083.330665%

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 7550 6246 0 0 0.00% 0.00%
B 7550 6246 27 27 0.36% 0.43%
C 7550 6246 1138 1138 15.07% 18.22%
D 7550 6246 103 103 1.36% 1.65%

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 13 251 7831 42.51 817 802 165.3
A 0 226 7782 42.21 817 802 165.3
A 12 194 7766 42.11 817 802 165.3
B 0 228 301511 1978.55 810 794 152.0
B 0 219 70563 459.04 810 794 152.0
B 4 81 35961 231.38 810 794 152.0
C 9 247 5075242 29857.18 738 743 170.0
C 7 220 7426 39.32 738 743 170.0
C 13 61 5695 29.14 738 743 170.0
D 8 195 478213 2481.82 790 766 192.4
D 2 33 306246 1587.92 790 766 192.4
D 2 152 129719 670.31 790 766 192.4

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