ASTROSAT CZTI

Data Quality Report

Orbit 22954

Creation date: 2024-06-27T18:47:57.144862
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/AS1A08_009T01_9000003390_22954cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22954cztM0_level2_quad_clean.evt
Size (bytes)509,670,720104,558,400
Size486.1 MB 99.7 MB
Events in quadrant A2,983,321695,032
Events in quadrant B3,146,693715,188
Events in quadrant C3,096,987690,249
Events in quadrant D5,785,061630,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131012
B0135582
C0134443
D0217122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6241150.240346%
B6241590.945361%
C6240891.426282%
D624079612.756410%

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 7426 6242 3 3 0.04% 0.05%
B 7426 6242 20 20 0.27% 0.32%
C 7425 6241 2 2 0.03% 0.03%
D 7425 6241 590 590 7.95% 9.45%

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 13 254 10663 64.3 771 756 154.1
A 6 16 8918 52.97 771 756 154.1
A 0 226 6568 37.72 771 756 154.1
B 4 216 84849 575.27 775 755 146.2
B 12 111 17547 114.87 775 755 146.2
B 0 190 17276 113.02 775 755 146.2
C 14 238 119369 682.74 752 757 173.7
C 0 10 38501 217.26 752 757 173.7
C 7 247 7245 37.35 752 757 173.7
D 1 52 2762450 16275.16 707 688 169.7
D 2 152 150383 882.16 707 688 169.7
D 13 172 72731 424.55 707 688 169.7

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