ASTROSAT CZTI

Data Quality Report

Orbit 35288

Creation date: 2024-06-27T21:11:34.332161
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/AS1A11_082T01_9000005056_35288cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35288cztM0_level2_quad_clean.evt
Size (bytes)709,663,68067,665,600
Size676.8 MB 64.5 MB
Events in quadrant A2,706,832459,496
Events in quadrant B9,138,121357,502
Events in quadrant C3,841,594455,004
Events in quadrant D5,444,982401,769

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113883
B0308462
C0150212
D0197922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533670.131184%
B5336279452.361319%
C53361322.473763%
D533669613.043478%

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 7129 5337 1 1 0.01% 0.02%
B 7128 5336 2327 2327 32.65% 43.61%
C 7129 5337 110 110 1.54% 2.06%
D 7129 5337 700 700 9.82% 13.12%

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 15 169 135787 1072.9 634 621 126.0
A 10 83 95669 754.45 634 621 126.0
A 10 255 11196 83.94 634 621 126.0
B 5 172 5027614 54258.19 485 472 92.7
B 5 236 2047076 22089.1 485 472 92.7
B 5 200 116312 1250.27 485 472 92.7
C 0 10 645167 4486.22 621 627 143.7
C 4 254 525794 3655.35 621 627 143.7
C 15 214 220540 1530.67 621 627 143.7
D 7 80 2438114 16750.94 593 577 145.5
D 8 195 209953 1438.85 593 577 145.5
D 13 249 138907 950.61 593 577 145.5

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