ASTROSAT CZTI

Data Quality Report

Orbit 29137

Creation date: 2024-06-27T20:00:41.197701
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/AS1A10_099T01_9000004184_29137cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29137cztM0_level2_quad_clean.evt
Size (bytes)537,998,40076,487,040
Size513.1 MB 72.9 MB
Events in quadrant A3,541,058481,044
Events in quadrant B3,693,559487,776
Events in quadrant C3,603,394462,146
Events in quadrant D5,028,524445,385

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147202
B0150382
C0147612
D0192232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6300841.333333%
B63001071.698413%
C62991382.190824%
D62993435.445309%

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 7610 6301 0 0 0.00% 0.00%
B 7610 6301 6 6 0.08% 0.10%
C 7609 6300 0 0 0.00% 0.00%
D 7609 6300 225 225 2.96% 3.57%

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 10486 53.26 918 905 179.9
A 3 137 8215 40.64 918 905 179.9
A 0 226 7719 37.88 918 905 179.9
B 10 245 59881 350.8 905 887 168.2
B 0 190 50589 295.55 905 887 168.2
B 10 246 30438 175.72 905 887 168.2
C 14 238 142283 714.69 865 875 197.9
C 3 233 70344 351.11 865 875 197.9
C 2 114 15020 71.49 865 875 197.9
D 1 52 1122728 5576.55 858 841 201.2
D 8 195 435144 2158.78 858 841 201.2
D 12 233 129804 641.03 858 841 201.2

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