ASTROSAT CZTI

Data Quality Report

Orbit 06996

Creation date: 2024-06-27T15:14:15.477947
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/AS1T01_151T01_9000000960_06996cztM0_level2.evt modeM0/AS1T01_151T01_9000000960_06996cztM0_level2_quad_clean.evt
Size (bytes)523,990,080111,191,040
Size499.7 MB 106.0 MB
Events in quadrant A3,712,665712,251
Events in quadrant B3,948,993716,961
Events in quadrant C3,627,803704,025
Events in quadrant D4,040,034681,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166643
B0171572
C0164802
D0172812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7949770.968675%
B79491011.270600%
C7949320.402566%
D7949730.918355%

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 8504 7952 6 6 0.07% 0.08%
B 8504 7952 7 7 0.08% 0.09%
C 8504 7952 0 0 0.00% 0.00%
D 8504 7952 27 27 0.32% 0.34%

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 13 248 24861 124.22 946 925 192.7
A 14 239 17344 85.21 946 925 192.7
A 15 234 14134 68.55 946 925 192.7
B 0 214 84290 453.85 949 926 183.7
B 0 228 54051 289.22 949 926 183.7
B 15 204 45226 241.18 949 926 183.7
C 8 128 13518 58.3 922 925 216.0
C 13 61 7143 28.79 922 925 216.0
C 8 112 7057 28.39 922 925 216.0
D 8 195 307247 1346.54 927 896 227.5
D 12 233 118996 519.1 927 896 227.5
D 14 34 24545 103.95 927 896 227.5

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