ASTROSAT CZTI

Data Quality Report

Orbit 20055

Creation date: 2024-06-27T18:10:40.292265
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/AS1T03_117T01_9000002988_20055cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20055cztM0_level2_quad_clean.evt
Size (bytes)1,633,498,560313,122,240
Size1.5 GB 298.6 MB
Events in quadrant A12,315,4151,991,017
Events in quadrant B11,920,5731,997,720
Events in quadrant C11,722,6081,919,728
Events in quadrant D11,873,9731,908,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524084
B0512304
C0505774
D0521314

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242394281.765749%
B242403991.646040%
C242404371.802805%
D242403311.365512%

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 25969 24243 137 137 0.53% 0.57%
B 25970 24244 54 54 0.21% 0.22%
C 25970 24244 20 20 0.08% 0.08%
D 25970 24244 156 156 0.60% 0.64%

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 14 238 558814 933.31 2961 2899 595.6
A 14 254 329523 548.36 2961 2899 595.6
A 11 29 27357 41.06 2961 2899 595.6
B 10 245 182842 318.72 2941 2863 564.7
B 4 80 102234 175.98 2941 2863 564.7
B 3 64 80310 137.15 2941 2863 564.7
C 14 238 440818 660.2 2837 2853 663.4
C 4 254 165422 245.06 2837 2853 663.4
C 3 233 32373 44.5 2837 2853 663.4
D 1 52 699395 996.61 2886 2809 699.0
D 15 145 286104 405.31 2886 2809 699.0
D 2 234 105725 147.24 2886 2809 699.0

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