ASTROSAT CZTI

Data Quality Report

Orbit 08260

Creation date: 2024-06-27T15:30:15.722476
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/AS1G06_136T01_9000001148_08260cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08260cztM0_level2_quad_clean.evt
Size (bytes)703,160,64074,943,360
Size670.6 MB 71.5 MB
Events in quadrant A10,908,459311,901
Events in quadrant B3,163,619511,068
Events in quadrant C2,997,721511,643
Events in quadrant D3,790,297485,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03677718
B0134423
C0132273
D0155951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419332551.799346%
B6420630.981308%
C6420410.638629%
D64211892.943467%

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 7476 6420 2903 2903 38.83% 45.22%
B 7476 6421 18 18 0.24% 0.28%
C 7476 6422 20 20 0.27% 0.31%
D 7476 6422 143 143 1.91% 2.23%

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 0 128 8804046 79181.74 544 532 111.2
A 13 248 10785 92.22 544 532 111.2
A 0 226 4914 39.41 544 532 111.2
B 11 51 61550 407.21 770 752 149.3
B 0 214 49469 326.3 770 752 149.3
B 10 252 48630 320.68 770 752 149.3
C 9 54 87205 498.94 746 750 173.3
C 13 61 5639 28.21 746 750 173.3
C 12 4 3228 14.3 746 750 173.3
D 1 52 647385 3625.94 743 725 178.3
D 12 233 188800 1054.57 743 725 178.3
D 2 136 106824 594.92 743 725 178.3

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