ASTROSAT CZTI

Data Quality Report

Orbit 40895

Creation date: 2024-06-27T22:21:52.646503
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/AS1A12_097T01_9000005574_40895cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40895cztM0_level2_quad_clean.evt
Size (bytes)364,947,84086,016,960
Size348.0 MB 82.0 MB
Events in quadrant A2,799,820586,984
Events in quadrant B3,279,353603,190
Events in quadrant C2,947,077570,358
Events in quadrant D4,100,938499,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112793
B0129542
C0117312
D0154902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4912130.264658%
B49121563.175896%
C4912961.954397%
D49123116.331433%

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 7005 4913 6 6 0.09% 0.12%
B 7005 4913 92 92 1.31% 1.87%
C 7005 4913 89 89 1.27% 1.81%
D 7005 4913 276 276 3.94% 5.62%

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 10 83 491900 4242.69 563 553 115.8
A 2 79 81182 696.22 563 553 115.8
A 12 189 24159 203.83 563 553 115.8
B 4 171 806469 7431.26 565 549 108.4
B 5 255 82383 754.58 565 549 108.4
B 5 32 62924 575.15 565 549 108.4
C 14 254 475926 3703.91 550 554 128.3
C 15 214 206015 1600.87 550 554 128.3
C 0 10 112389 871.37 550 554 128.3
D 12 79 808240 6151.43 532 517 131.3
D 12 128 763423 5810.12 532 517 131.3
D 2 249 280837 2134.85 532 517 131.3

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