ASTROSAT CZTI

Data Quality Report

Orbit 42908

Creation date: 2024-06-27T22:45:40.363169
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/AS1T05_143T01_9000005830_42908cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42908cztM0_level2_quad_clean.evt
Size (bytes)338,506,56089,124,480
Size322.8 MB 85.0 MB
Events in quadrant A3,244,996605,235
Events in quadrant B2,282,323625,851
Events in quadrant C2,665,610591,942
Events in quadrant D3,947,371524,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128521
B0101611
C0109851
D0151791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50071492.975834%
B5008150.299521%
C5008250.499201%
D50073216.411025%

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 7011 5008 130 130 1.85% 2.60%
B 7012 5009 4 4 0.06% 0.08%
C 7012 5009 25 25 0.36% 0.50%
D 7011 5008 332 332 4.74% 6.63%

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 528057 4575.84 559 549 115.3
A 15 237 373952 3239.07 559 549 115.3
A 15 190 140784 1216.46 559 549 115.3
B 0 229 25950 238.06 563 548 106.7
B 0 230 17008 154.26 563 548 106.7
B 12 111 12689 113.78 563 548 106.7
C 15 214 201903 1555.41 557 560 129.4
C 14 254 129470 995.85 557 560 129.4
C 8 79 58933 450.94 557 560 129.4
D 1 52 704538 5357.19 543 527 131.4
D 1 47 528172 4015.13 543 527 131.4
D 10 118 176860 1341.81 543 527 131.4

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