ASTROSAT CZTI

Data Quality Report

Orbit 03862

Creation date: 2024-06-27T14:34:30.484926
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/AS1G05_189T01_9000000492_03862cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03862cztM0_level2_quad_clean.evt
Size (bytes)409,754,88068,238,720
Size390.8 MB 65.1 MB
Events in quadrant A3,149,723419,046
Events in quadrant B2,891,177422,160
Events in quadrant C3,376,693411,495
Events in quadrant D2,594,767405,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134532
B0123981
C0139011
D0122121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5841911.557952%
B5841591.010101%
C5841951.626434%
D5841390.667694%

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 7011 5841 22 22 0.31% 0.38%
B 7011 5841 22 22 0.31% 0.38%
C 7011 5841 40 40 0.57% 0.68%
D 7011 5841 2 2 0.03% 0.03%

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 15 234 278395 1999.49 685 672 138.9
A 8 15 109420 782.94 685 672 138.9
A 0 50 80741 576.46 685 672 138.9
B 14 167 116111 862.86 692 678 133.8
B 15 204 93262 692.07 692 678 133.8
B 12 111 11741 82.7 692 678 133.8
C 2 53 733249 4706.45 663 669 155.7
C 14 67 35531 223.97 663 669 155.7
C 1 16 15075 92.55 663 669 155.7
D 13 248 38412 234.98 663 645 160.7
D 12 110 27398 166.45 663 645 160.7
D 2 14 11939 70.27 663 645 160.7

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
Veto Counter