ASTROSAT CZTI

Data Quality Report

Orbit 17917

Creation date: 2024-06-27T17:42:34.121741
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/AS1A05_096T06_9000002668_17917cztM0_level2.evt modeM0/AS1A05_096T06_9000002668_17917cztM0_level2_quad_clean.evt
Size (bytes)462,648,960128,139,840
Size441.2 MB 122.2 MB
Events in quadrant A3,122,442885,586
Events in quadrant B3,389,567896,874
Events in quadrant C3,067,368837,520
Events in quadrant D4,002,864820,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135351
B0142531
C0133551
D0163631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6319731.155246%
B6320921.455696%
C6319831.313499%
D63192273.592341%

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 7494 6319 1 1 0.01% 0.02%
B 7495 6320 18 18 0.24% 0.28%
C 7494 6320 1 1 0.01% 0.02%
D 7494 6320 146 146 1.95% 2.31%

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 15 174 58472 361.25 791 775 159.7
A 15 192 12258 71.9 791 775 159.7
A 13 210 8016 45.34 791 775 159.7
B 15 222 106719 718.56 787 770 147.4
B 7 220 82886 556.92 787 770 147.4
B 0 190 22430 146.9 787 770 147.4
C 14 238 117902 682.44 738 741 171.7
C 3 233 31217 177.51 738 741 171.7
C 9 160 25073 141.73 738 741 171.7
D 7 238 732542 3681.32 738 720 198.8
D 5 222 262859 1318.65 738 720 198.8
D 9 64 49041 243.07 738 720 198.8

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