ASTROSAT CZTI

Data Quality Report

Orbit 43616

Creation date: 2024-06-27T22:53:42.087803
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_095T02_9000005892_43616cztM0_level2.fits modeM0/AS1A12_095T02_9000005892_43616cztM0_level2_quad_clean.evt
Size (bytes)905,768,64077,267,520
Size863.8 MB 73.7 MB
Events in quadrant A4,422,055639,575
Events in quadrant B4,421,736656,298
Events in quadrant C13,271,733224,236
Events in quadrant D10,959,823405,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01696177
B017222187
C043937493
D036945346

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01191
D01190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58754527.693617%
B58614447.575499%
C5844518988.791923%
D5849352060.181228%

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 6888 5887 267 267 3.88% 4.54%
B 6878 5875 269 269 3.91% 4.58%
C 6877 5844 4591 4591 66.76% 78.56%
D 6876 5857 2945 2945 42.83% 50.28%

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 714625 5212.19 662 650 137.0
A 15 223 626636 4569.85 662 650 137.0
A 0 209 230449 1677.59 662 650 137.0
B 5 235 875366 6754.46 658 639 129.5
B 5 255 246193 1896.12 658 639 129.5
B 0 200 137127 1053.93 658 639 129.5
C 15 174 4845163 87188.76 235 236 55.6
C 15 142 3060673 55075.28 235 236 55.6
C 15 158 1394189 25085.42 235 236 55.6
D 13 187 2940705 22256.12 476 458 132.1
D 4 212 1236631 9357.18 476 458 132.1
D 4 216 963286 7288.1 476 458 132.1

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