ASTROSAT CZTI

Data Quality Report

Orbit 43574

Creation date: 2024-06-27T22:53:20.311337
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/AS1A05_174T01_9000005880_43574cztM0_level2.fits modeM0/AS1A05_174T01_9000005880_43574cztM0_level2_quad_clean.evt
Size (bytes)1,057,631,04075,741,120
Size1008.6 MB 72.2 MB
Events in quadrant A5,797,112681,539
Events in quadrant B6,614,239693,316
Events in quadrant C14,860,312343,732
Events in quadrant D11,429,274162,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215291
B0238731
C0480291
D0379851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58173415.862128%
B581767811.655493%
C5817552094.894275%
D5818579599.604675%

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 6972 5817 233 233 3.34% 4.01%
B 6972 5817 558 558 8.00% 9.59%
C 6971 5816 5335 5335 76.53% 91.73%
D 6972 5817 3028 3028 43.43% 52.05%

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 982855 7009.29 677 666 140.1
A 10 99 688575 4909.19 677 666 140.1
A 10 83 650223 4635.49 677 666 140.1
B 4 206 3641155 28004.41 666 648 130.0
B 0 230 135296 1035.77 666 648 130.0
B 0 200 64210 488.95 666 648 130.0
C 15 174 6251898 78055.88 340 342 80.1
C 15 142 5548952 69279.01 340 342 80.1
C 15 126 690958 8622.92 340 342 80.1
D 4 212 5614417 94804.85 195 187 59.2
D 4 216 1765821 29815.43 195 187 59.2
D 14 210 357071 6026.53 195 187 59.2

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