ASTROSAT CZTI

Data Quality Report

Orbit 46503

Creation date: 2024-06-27T23:23:57.046223
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/AS1A13_068T06_9000006220_46503cztM0_level2.fits modeM0/AS1A13_068T06_9000006220_46503cztM0_level2_quad_clean.evt
Size (bytes)475,407,360110,373,120
Size453.4 MB 105.3 MB
Events in quadrant A6,040,575736,222
Events in quadrant B3,474,467776,729
Events in quadrant C2,936,616744,577
Events in quadrant D4,655,473643,455

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218023
B0143372
C0129972
D0180922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63262023.193171%
B63261522.402782%
C6326140.221309%
D63263976.275688%

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 7561 6326 43 43 0.57% 0.68%
B 7561 6327 80 80 1.06% 1.26%
C 7561 6327 3 3 0.04% 0.05%
D 7561 6327 402 402 5.32% 6.35%

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 3094901 19890.87 755 740 155.6
A 13 254 10690 63.96 755 740 155.6
A 13 248 10669 63.83 755 740 155.6
B 5 255 320383 2149.22 758 738 148.7
B 5 172 69304 461.02 758 738 148.7
B 0 190 41288 272.65 758 738 148.7
C 14 254 21908 121.4 744 750 174.3
C 1 3 8214 42.83 744 750 174.3
C 12 249 5687 28.33 744 750 174.3
D 7 80 1070760 5937.59 718 698 180.2
D 13 249 438692 2430.35 718 698 180.2
D 1 52 119560 659.54 718 698 180.2

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