ASTROSAT CZTI

Data Quality Report

Orbit 32769

Creation date: 2024-06-27T20:41:49.159817
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/AS1T04_064T01_9000004730_32769cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32769cztM0_level2_quad_clean.evt
Size (bytes)542,724,48050,921,280
Size517.6 MB 48.6 MB
Events in quadrant A3,548,485289,888
Events in quadrant B3,467,985305,630
Events in quadrant C4,177,650283,268
Events in quadrant D4,870,733277,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139812
B0138741
C0158311
D0183411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54922254.096868%
B5492931.693372%
C54923977.228696%
D54922484.515659%

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 7286 5493 135 135 1.85% 2.46%
B 7286 5493 66 66 0.91% 1.20%
C 7286 5493 309 309 4.24% 5.63%
D 7286 5493 195 195 2.68% 3.55%

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 12 16 433882 3280.92 667 656 132.0
A 15 237 405377 3065.05 667 656 132.0
A 12 194 64327 482.2 667 656 132.0
B 12 1 259640 2019.41 681 664 128.2
B 5 172 171372 1331.13 681 664 128.2
B 0 219 106785 827.5 681 664 128.2
C 0 10 1406858 9533.14 640 647 147.5
C 3 233 89990 605.68 640 647 147.5
C 0 207 76101 511.53 640 647 147.5
D 8 195 1127127 6885.81 640 628 163.6
D 2 250 445060 2716.62 640 628 163.6
D 12 218 205007 1249.28 640 628 163.6

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