ASTROSAT CZTI

Data Quality Report

Orbit 51761

Creation date: 2025-04-23T20:36:27.304952
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/AS1A13_090T01_9000006464_51761cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51761cztM0_level2_quad_clean.evt
Size (bytes)869,112,000101,917,440
Size828.8 MB 97.2 MB
Events in quadrant A5,709,432744,790
Events in quadrant B6,475,480770,836
Events in quadrant C4,734,655699,905
Events in quadrant D14,628,287310,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225080
B0248130
C0199060
D0490540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80491401.739347%
B80496648.249472%
C80503964.919255%
D8050472458.683230%

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 8049 8049 51 51 0.63% 0.63%
B 8049 8049 414 414 5.14% 5.14%
C 8050 8050 333 333 4.14% 4.14%
D 8050 8050 3616 3616 44.92% 44.92%

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 12 3 1286468 5947.02 885 864 216.2
A 5 240 157346 723.86 885 864 216.2
A 12 194 155574 715.67 885 864 216.2
B 4 206 1854789 9853.83 862 830 188.1
B 10 44 294775 1562.32 862 830 188.1
B 0 213 192436 1018.39 862 830 188.1
C 13 3 844412 3690.73 840 834 228.6
C 14 245 185711 808.85 840 834 228.6
C 3 233 77147 333.88 840 834 228.6
D 11 129 11032800 70197.9 558 539 157.2
D 8 176 414880 2636.44 558 539 157.2
D 7 159 285637 1814.07 558 539 157.2

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