ASTROSAT CZTI

Data Quality Report

Orbit 03172

Creation date: 2024-06-27T14:25:30.960220
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/AS1G05_218T02_9000000434_03172cztM0_level2.evt modeM0/AS1G05_218T02_9000000434_03172cztM0_level2_quad_clean.evt
Size (bytes)450,066,24096,163,200
Size429.2 MB 91.7 MB
Events in quadrant A2,747,818636,655
Events in quadrant B3,034,108639,555
Events in quadrant C3,842,406611,485
Events in quadrant D3,590,932598,052

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125992
B0131621
C0157581
D0151271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61041021.671035%
B61041402.293578%
C61043385.537353%
D61042714.439712%

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 7009 6104 7 7 0.10% 0.11%
B 7009 6104 15 15 0.21% 0.25%
C 7009 6104 230 230 3.28% 3.77%
D 7009 6104 177 177 2.53% 2.90%

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 12 247 66729 469.47 692 676 140.7
A 0 226 7939 51.62 692 676 140.7
A 12 194 7581 49.08 692 676 140.7
B 4 80 160324 1193.07 696 678 133.8
B 4 70 40236 295.63 696 678 133.8
B 0 219 28814 210.27 696 678 133.8
C 1 192 1078298 7092.35 653 654 151.9
C 14 223 145884 955.81 653 654 151.9
C 6 80 50497 328.03 653 654 151.9
D 2 136 480812 3003.01 659 638 159.9
D 10 199 340689 2126.68 659 638 159.9
D 7 39 84589 525.03 659 638 159.9

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