ASTROSAT CZTI

Data Quality Report

Orbit 45291

Creation date: 2024-06-27T23:12:02.112579
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_024T03_9000006064_45291cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45291cztM0_level2_quad_clean.evt
Size (bytes)507,193,920113,025,600
Size483.7 MB 107.8 MB
Events in quadrant A5,729,774764,513
Events in quadrant B3,487,655792,359
Events in quadrant C3,842,017734,530
Events in quadrant D5,158,040630,459

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218800
B0152290
C0166100
D0203940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7180270.376045%
B7181480.668431%
C71801562.172702%
D71805988.328691%

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 7180 7180 4 4 0.06% 0.06%
B 7181 7181 18 18 0.25% 0.25%
C 7180 7180 112 112 1.56% 1.56%
D 7180 7180 599 599 8.34% 8.34%

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 2559807 15382.67 794 776 166.4
A 13 248 43611 257.48 794 776 166.4
A 10 248 40392 238.13 794 776 166.4
B 5 172 65809 413.66 793 770 157.2
B 5 32 50047 313.41 793 770 157.2
B 3 112 40590 253.26 793 770 157.2
C 14 254 697984 3873.41 762 766 180.0
C 3 233 122676 677.27 762 766 180.0
C 2 14 29055 157.16 762 766 180.0
D 2 249 996581 5287.62 743 718 188.3
D 13 249 678931 3601.03 743 718 188.3
D 13 29 198964 1052.6 743 718 188.3

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