ASTROSAT CZTI

Data Quality Report

Orbit 41648

Creation date: 2024-06-27T22:31:08.030448
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_116T01_9000005682_41648cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41648cztM0_level2_quad_clean.evt
Size (bytes)332,081,28092,761,920
Size316.7 MB 88.5 MB
Events in quadrant A2,957,912639,761
Events in quadrant B2,600,974651,571
Events in quadrant C3,081,765596,049
Events in quadrant D3,255,977565,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119213
B0109472
C0122552
D0130992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5081320.629797%
B508160.118087%
C50812264.447943%
D50821613.168044%

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 7174 5082 21 21 0.29% 0.41%
B 7174 5082 1 1 0.01% 0.02%
C 7174 5082 211 211 2.94% 4.15%
D 7175 5083 146 146 2.03% 2.87%

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 539719 4484.64 592 582 120.2
A 13 248 95039 785.71 592 582 120.2
A 2 79 21333 172.61 592 582 120.2
B 0 190 113042 1015.52 586 570 110.8
B 7 202 75161 673.49 586 570 110.8
B 0 186 74851 670.69 586 570 110.8
C 0 10 593417 4595.1 565 569 129.0
C 15 214 202356 1564.03 565 569 129.0
C 14 254 77521 596.45 565 569 129.0
D 13 249 762161 5468.0 578 563 139.3
D 1 47 53902 382.95 578 563 139.3
D 12 217 35230 248.9 578 563 139.3

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