ASTROSAT CZTI

Data Quality Report

Orbit 02837

Creation date: 2024-06-27T14:22:16.367927
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/AS1P01_999T99_9000000410_02837cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02837cztM0_level2_quad_clean.evt
Size (bytes)662,610,24046,638,720
Size631.9 MB 44.5 MB
Events in quadrant A2,462,580288,669
Events in quadrant B4,220,671265,192
Events in quadrant C5,645,982259,963
Events in quadrant D7,400,516247,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109353
B0158902
C0201012
D0253952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4983240.481638%
B49834859.733093%
C4983117423.560104%
D4983200340.196669%

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 7139 4984 22 22 0.31% 0.44%
B 7139 4983 413 413 5.79% 8.29%
C 7139 4983 867 867 12.14% 17.40%
D 7139 4984 1526 1526 21.38% 30.62%

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 0 5 148432 1346.48 543 531 109.8
A 0 31 92943 841.31 543 531 109.8
A 0 149 29389 262.72 543 531 109.8
B 0 168 1061467 10514.93 527 518 100.9
B 0 173 640039 6338.21 527 518 100.9
B 0 191 161608 1596.54 527 518 100.9
C 0 64 3008772 26367.31 488 491 114.1
C 0 219 370012 3238.82 488 491 114.1
C 1 16 106614 930.16 488 491 114.1
D 0 226 2899397 27255.0 428 420 106.4
D 1 4 1838515 17281.02 428 420 106.4
D 1 35 400865 3764.82 428 420 106.4

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
Veto Counter