ASTROSAT CZTI

Data Quality Report

Orbit 41230

Creation date: 2024-06-27T22:26:15.415772
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/AS1T05_102T01_9000005634_41230cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41230cztM0_level2_quad_clean.evt
Size (bytes)402,883,20086,169,600
Size384.2 MB 82.2 MB
Events in quadrant A5,456,596530,097
Events in quadrant B2,568,340614,023
Events in quadrant C3,555,966571,137
Events in quadrant D2,937,596538,062

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194703
B0108412
C0138672
D0121642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507871614.100039%
B5078250.492320%
C50781713.367468%
D50781352.658527%

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 7201 5079 835 835 11.60% 16.44%
B 7201 5079 15 15 0.21% 0.30%
C 7201 5079 150 150 2.08% 2.95%
D 7201 5079 133 133 1.85% 2.62%

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 0 8 2733654 23568.12 569 559 116.0
A 10 83 493537 4251.07 569 559 116.0
A 2 79 11149 91.32 569 559 116.0
B 5 255 113993 1014.98 579 564 111.8
B 0 245 79561 706.88 579 564 111.8
B 0 190 54332 481.12 579 564 111.8
C 9 54 743650 5703.2 560 564 130.3
C 0 10 410377 3145.32 560 564 130.3
C 15 214 213384 1633.4 560 564 130.3
D 13 249 335518 2372.43 568 551 141.2
D 5 222 246911 1744.86 568 551 141.2
D 2 249 43462 303.92 568 551 141.2

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