ASTROSAT CZTI

Data Quality Report

Orbit 38492

Creation date: 2024-06-27T21:53:29.812677
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/AS1A12_018T01_9000005386_38492cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38492cztM0_level2_quad_clean.evt
Size (bytes)354,850,56089,769,600
Size338.4 MB 85.6 MB
Events in quadrant A3,283,614623,992
Events in quadrant B3,262,526613,473
Events in quadrant C2,392,760595,211
Events in quadrant D3,816,457542,571

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131403
B0127752
C098782
D0146642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4884571.167076%
B48842064.217854%
C488460.122850%
D48841943.972154%

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 7037 4885 39 39 0.55% 0.80%
B 7037 4885 170 170 2.42% 3.48%
C 7037 4885 2 2 0.03% 0.04%
D 7037 4885 180 180 2.56% 3.68%

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 15 222 530709 4631.83 574 564 114.5
A 10 83 386577 3372.56 574 564 114.5
A 9 143 100052 869.22 574 564 114.5
B 5 184 448593 4293.03 559 546 104.4
B 4 171 219184 2094.92 559 546 104.4
B 8 3 168133 1605.76 559 546 104.4
C 15 214 203425 1577.84 557 560 128.6
C 0 10 16027 120.3 557 560 128.6
C 13 61 3722 24.59 557 560 128.6
D 7 223 663420 4944.74 557 544 134.1
D 12 235 273013 2032.49 557 544 134.1
D 13 249 251703 1873.53 557 544 134.1

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