ASTROSAT CZTI

Data Quality Report

Orbit 17172

Creation date: 2024-06-27T17:33:10.610902
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/AS1A05_185T04_9000002548_17172cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17172cztM0_level2_quad_clean.evt
Size (bytes)595,681,92094,161,600
Size568.1 MB 89.8 MB
Events in quadrant A4,125,320577,456
Events in quadrant B4,280,394578,598
Events in quadrant C4,329,364557,181
Events in quadrant D4,724,085543,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179032
B0182772
C0182462
D0199532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85583003.505492%
B85593604.206099%
C85593373.937376%
D85594114.801963%

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 9038 8559 0 0 0.00% 0.00%
B 9039 8561 12 12 0.13% 0.14%
C 9039 8561 15 15 0.17% 0.18%
D 9039 8561 178 178 1.97% 2.08%

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 12 189 65257 301.42 1048 1021 213.1
A 12 96 23545 105.69 1048 1021 213.1
A 0 226 8917 37.05 1048 1021 213.1
B 0 197 91726 445.42 1047 1016 203.6
B 0 219 41230 197.47 1047 1016 203.6
B 12 111 25028 117.91 1047 1016 203.6
C 14 238 151062 625.34 1009 1013 239.9
C 3 233 119925 495.57 1009 1013 239.9
C 4 254 116445 481.07 1009 1013 239.9
D 5 222 770590 3086.49 1016 982 249.3
D 7 38 62382 246.24 1016 982 249.3
D 2 234 32772 127.49 1016 982 249.3

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