ASTROSAT CZTI

Data Quality Report

Orbit 25983

Creation date: 2024-06-27T19:23:30.903665
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/AS1A07_068T01_9000003760_25983cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25983cztM0_level2_quad_clean.evt
Size (bytes)502,848,000107,006,400
Size479.6 MB 102.0 MB
Events in quadrant A3,170,841739,984
Events in quadrant B3,172,325726,616
Events in quadrant C3,126,542681,945
Events in quadrant D5,349,537670,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130710
B0131080
C0130400
D0199810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6035881.458161%
B6036851.408217%
C60361352.236581%
D60363976.577203%

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 7330 6036 0 0 0.00% 0.00%
B 7331 6038 3 3 0.04% 0.05%
C 7331 6038 0 0 0.00% 0.00%
D 7331 6038 280 280 3.82% 4.64%

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 13 254 8287 45.68 822 807 163.8
A 0 226 7190 38.98 822 807 163.8
A 3 137 6822 36.73 822 807 163.8
B 0 190 35884 233.56 795 778 150.3
B 0 229 22324 143.35 795 778 150.3
B 12 111 17443 110.87 795 778 150.3
C 14 238 126840 724.87 757 762 173.9
C 3 233 27365 152.95 757 762 173.9
C 0 207 19572 108.15 757 762 173.9
D 1 52 1659663 9003.74 773 755 184.2
D 12 233 630379 3417.29 773 755 184.2
D 2 153 131690 710.65 773 755 184.2

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