ASTROSAT CZTI

Data Quality Report

Orbit 17316

Creation date: 2024-06-27T17:34:54.787141
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_010T02_9000002556_17316cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17316cztM0_level2_quad_clean.evt
Size (bytes)522,875,520110,540,160
Size498.7 MB 105.4 MB
Events in quadrant A3,804,594717,346
Events in quadrant B3,711,247720,757
Events in quadrant C3,665,243678,393
Events in quadrant D4,110,509674,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167152
B0164262
C0163782
D0178472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8005660.824485%
B80051111.386633%
C80051191.486571%
D8005931.161774%

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 8690 8008 0 0 0.00% 0.00%
B 8690 8008 0 0 0.00% 0.00%
C 8690 8008 0 0 0.00% 0.00%
D 8690 8008 26 26 0.30% 0.32%

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 13 210 183144 956.76 941 919 190.5
A 0 226 8342 38.97 941 919 190.5
A 3 137 7332 33.67 941 919 190.5
B 12 111 22342 117.36 944 915 182.6
B 11 111 19606 102.37 944 915 182.6
B 14 111 17055 88.4 944 915 182.6
C 14 238 137666 642.27 901 905 212.9
C 3 233 6486 26.21 901 905 212.9
C 13 61 6418 25.89 901 905 212.9
D 5 222 366347 1639.37 911 884 222.9
D 1 52 222192 992.73 911 884 222.9
D 2 152 48973 215.71 911 884 222.9

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