ASTROSAT CZTI

Data Quality Report

Orbit 10917

Creation date: 2024-06-27T16:05:38.243096
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_109T01_9000001578_10917cztM0_level2.evt modeM0/AS1A04_109T01_9000001578_10917cztM0_level2_quad_clean.evt
Size (bytes)553,968,000107,614,080
Size528.3 MB 102.6 MB
Events in quadrant A4,540,677680,803
Events in quadrant B4,446,624697,107
Events in quadrant C3,251,465700,845
Events in quadrant D4,037,462666,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01858539
B01823146
C01506233
D01721859

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73802853.861789%
B73802773.753388%
C7378120.162646%
D7376640.867679%

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 7654 7395 137 137 1.79% 1.85%
B 7654 7395 149 149 1.95% 2.01%
C 7654 7394 0 0 0.00% 0.00%
D 7654 7395 45 45 0.59% 0.61%

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 8 5 380982 2189.2 850 831 173.6
A 15 174 281118 1614.11 850 831 173.6
A 13 251 261683 1502.19 850 831 173.6
B 4 239 935187 5659.6 858 836 165.1
B 0 214 81871 490.85 858 836 165.1
B 0 219 30150 177.56 858 836 165.1
C 13 61 6278 28.11 831 834 193.6
C 8 222 4469 18.77 831 834 193.6
C 8 128 3250 12.48 831 834 193.6
D 1 52 576423 2858.6 825 798 201.4
D 5 222 146486 723.5 825 798 201.4
D 13 104 74074 363.89 825 798 201.4

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