ASTROSAT CZTI

Data Quality Report

Orbit 33270

Creation date: 2024-06-27T20:46:52.477664
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_047T10_9000004778_33270cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33270cztM0_level2_quad_clean.evt
Size (bytes)507,329,28094,250,880
Size483.8 MB 89.9 MB
Events in quadrant A2,818,893620,003
Events in quadrant B4,051,582606,096
Events in quadrant C3,245,823609,701
Events in quadrant D4,829,511587,457

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125373
B0163212
C0133702
D0187412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6179140.226574%
B61793155.097912%
C6179380.614986%
D61791672.702703%

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 8806 6181 3 3 0.03% 0.05%
B 8806 6181 180 180 2.04% 2.91%
C 8806 6181 31 31 0.35% 0.50%
D 8806 6181 137 137 1.56% 2.22%

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 13 6 14935 99.24 718 705 143.4
A 15 169 12941 85.33 718 705 143.4
A 13 254 10863 70.84 718 705 143.4
B 5 172 682506 5091.02 698 681 133.9
B 4 170 243331 1811.81 698 681 133.9
B 5 200 133694 993.18 698 681 133.9
C 15 214 279850 1736.91 693 697 160.7
C 0 10 101406 626.62 693 697 160.7
C 14 254 71402 439.93 693 697 160.7
D 8 195 1254527 6770.55 687 671 185.2
D 2 249 231235 1244.99 687 671 185.2
D 12 218 114189 612.97 687 671 185.2

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