ASTROSAT CZTI

Data Quality Report

Orbit 25759

Creation date: 2024-06-27T19:21:11.265799
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/AS1A09_147T01_9000003754_25759cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25759cztM0_level2_quad_clean.evt
Size (bytes)540,581,76085,308,480
Size515.5 MB 81.4 MB
Events in quadrant A3,437,747529,939
Events in quadrant B3,570,483539,070
Events in quadrant C3,469,150516,554
Events in quadrant D5,417,952508,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146720
B0148980
C0145510
D0205950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7022490.697807%
B70221071.523782%
C7022901.281686%
D70215417.705455%

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 7832 7022 0 0 0.00% 0.00%
B 7832 7022 36 36 0.46% 0.51%
C 7832 7022 0 0 0.00% 0.00%
D 7830 7020 481 481 6.14% 6.85%

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 6 16 108788 626.95 863 845 172.2
A 13 254 11237 60.36 863 845 172.2
A 3 137 7979 41.44 863 845 172.2
B 7 219 59179 356.87 854 830 163.5
B 7 235 36914 220.7 854 830 163.5
B 0 190 30308 180.29 854 830 163.5
C 14 238 132376 679.13 829 836 193.7
C 3 233 98928 506.44 829 836 193.7
C 14 225 6956 31.6 829 836 193.7
D 1 52 1158551 6019.94 805 787 192.3
D 7 80 776781 4034.88 805 787 192.3
D 8 195 183453 949.79 805 787 192.3

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