ASTROSAT CZTI

Data Quality Report

Orbit 54833

Creation date: 2025-11-16T15:08:51.568016
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/AS1A14_039T06_9000006526_54833cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54833cztM0_level2_quad_clean.evt
Size (bytes)382,518,72095,287,680
Size364.8 MB 90.9 MB
Events in quadrant A2,915,601622,279
Events in quadrant B2,970,626662,835
Events in quadrant C3,346,765589,768
Events in quadrant D4,412,512550,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138762
B0139761
C0149021
D0176241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6604771.165960%
B66041071.620230%
C66041051.589945%
D66041842.786190%

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 7524 6605 11 11 0.15% 0.17%
B 7524 6605 22 22 0.29% 0.33%
C 7524 6605 58 58 0.77% 0.88%
D 7524 6605 129 129 1.71% 1.95%

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 13 248 139510 811.82 690 671 171.0
A 3 94 24923 141.8 690 671 171.0
A 0 8 19692 111.22 690 671 171.0
B 5 236 175810 1192.3 676 649 146.9
B 5 185 57543 387.27 676 649 146.9
B 10 247 35774 239.09 676 649 146.9
C 12 252 293597 1588.17 665 658 184.5
C 4 5 112063 603.98 665 658 184.5
C 13 3 101129 544.71 665 658 184.5
D 11 129 637438 3411.26 659 631 186.7
D 11 176 259561 1387.04 659 631 186.7
D 10 181 177751 948.8 659 631 186.7

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