ASTROSAT CZTI

Data Quality Report

Orbit 41455

Creation date: 2024-06-27T22:29:16.763033
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_100T01_9000005668_41455cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41455cztM0_level2_quad_clean.evt
Size (bytes)320,448,96088,378,560
Size305.6 MB 84.3 MB
Events in quadrant A2,895,372591,498
Events in quadrant B2,446,366607,450
Events in quadrant C3,457,827556,519
Events in quadrant D2,638,301539,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120673
B0110962
C0137172
D0118092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5440250.459559%
B544080.147059%
C54402444.485294%
D5440280.514706%

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 7054 5441 10 10 0.14% 0.18%
B 7054 5441 2 2 0.03% 0.04%
C 7054 5441 222 222 3.15% 4.08%
D 7054 5441 31 31 0.44% 0.57%

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 539897 4342.71 597 583 124.2
A 13 248 38662 306.62 597 583 124.2
A 13 254 9128 68.81 597 583 124.2
B 0 190 95080 823.15 593 577 114.8
B 12 111 14487 121.16 593 577 114.8
B 11 111 13752 114.76 593 577 114.8
C 0 10 621954 4669.21 567 569 133.1
C 9 54 396674 2976.41 567 569 133.1
C 15 214 223757 1677.08 567 569 133.1
D 1 47 182882 1254.7 585 569 145.3
D 13 249 119288 817.04 585 569 145.3
D 2 249 28452 191.89 585 569 145.3

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