ASTROSAT CZTI

Data Quality Report

Orbit 15236

Creation date: 2024-06-27T17:05:40.645695
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/AS1A04_105T01_9000002248_15236cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15236cztM0_level2_quad_clean.evt
Size (bytes)509,569,92095,045,760
Size486.0 MB 90.6 MB
Events in quadrant A3,553,012601,169
Events in quadrant B3,651,494609,324
Events in quadrant C4,013,642599,182
Events in quadrant D3,733,427575,699

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151083
B0152482
C0160792
D0158922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70781221.723651%
B70781391.963832%
C70781121.582368%
D70782503.532071%

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 8739 7079 0 0 0.00% 0.00%
B 8739 7079 7 7 0.08% 0.10%
C 8739 7080 7 7 0.08% 0.10%
D 8739 7079 108 108 1.24% 1.53%

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 68145 374.02 882 862 179.9
A 0 253 67501 370.44 882 862 179.9
A 15 233 10643 54.37 882 862 179.9
B 0 229 37484 217.41 878 856 168.5
B 4 142 27997 161.1 878 856 168.5
B 0 205 24675 141.38 878 856 168.5
C 3 233 516985 2619.84 851 856 197.0
C 0 207 151465 764.48 851 856 197.0
C 8 128 10380 48.34 851 856 197.0
D 1 255 218876 1051.91 850 825 207.3
D 2 33 139114 667.13 850 825 207.3
D 7 38 77277 368.82 850 825 207.3

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