ASTROSAT CZTI

Data Quality Report

Orbit 13791

Creation date: 2024-06-27T16:46:09.281928
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/AS1A04_199T01_9000002040_13791cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13791cztM0_level2_quad_clean.evt
Size (bytes)443,822,40091,100,160
Size423.3 MB 86.9 MB
Events in quadrant A3,119,589580,058
Events in quadrant B3,316,581593,972
Events in quadrant C3,152,710577,634
Events in quadrant D3,410,491553,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135193
B0140562
C0135062
D0144622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6500420.646154%
B6500651.000000%
C6500190.292308%
D6500640.984615%

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 7636 6502 7 7 0.09% 0.11%
B 7636 6502 12 12 0.16% 0.18%
C 7636 6502 7 7 0.09% 0.11%
D 7636 6502 39 39 0.51% 0.60%

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 15 69 29093 175.72 787 770 161.2
A 1 162 27289 164.53 787 770 161.2
A 1 178 10049 57.57 787 770 161.2
B 0 219 130393 857.02 793 773 151.2
B 4 80 44558 289.5 793 773 151.2
B 4 173 21516 137.15 793 773 151.2
C 3 233 104610 578.27 770 774 179.6
C 14 234 34357 187.03 770 774 179.6
C 13 61 5599 26.87 770 774 179.6
D 13 249 239628 1213.87 758 740 196.8
D 1 52 223693 1132.89 758 740 196.8
D 10 157 47219 236.17 758 740 196.8

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