ASTROSAT CZTI

Data Quality Report

Orbit 37752

Creation date: 2024-06-27T21:43:58.403728
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_106T02_9000005344_37752cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37752cztM0_level2_quad_clean.evt
Size (bytes)515,226,24058,003,200
Size491.4 MB 55.3 MB
Events in quadrant A6,387,015264,664
Events in quadrant B2,621,809389,681
Events in quadrant C2,756,757386,904
Events in quadrant D3,505,197370,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221152
B0105261
C0107911
D0136011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4906178436.363636%
B490660.122299%
C4906220.448430%
D49061733.526294%

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 6970 4906 1762 1762 25.28% 35.92%
B 6970 4907 3 3 0.04% 0.06%
C 6970 4907 24 24 0.34% 0.49%
D 6970 4907 169 169 2.42% 3.44%

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 15 222 4106199 41450.09 492 483 99.1
A 10 83 254072 2560.16 492 483 99.1
A 6 10 79939 802.16 492 483 99.1
B 5 255 46445 401.32 609 594 114.2
B 0 230 43912 379.15 609 594 114.2
B 0 213 36908 317.85 609 594 114.2
C 15 214 209619 1527.55 600 605 136.8
C 0 10 113656 826.22 600 605 136.8
C 0 207 65777 476.3 600 605 136.8
D 2 249 454281 3114.91 600 584 145.7
D 7 223 139260 952.1 600 584 145.7
D 13 249 126734 866.1 600 584 145.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter