ASTROSAT CZTI

Data Quality Report

Orbit 16849

Creation date: 2024-06-27T17:28:35.991792
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_056T01_9000002498_16849cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16849cztM0_level2_quad_clean.evt
Size (bytes)486,717,12071,568,000
Size464.2 MB 68.3 MB
Events in quadrant A3,383,626434,693
Events in quadrant B3,601,363444,714
Events in quadrant C3,458,920422,043
Events in quadrant D3,858,468415,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139173
B0144752
C0142032
D0157612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64441502.327747%
B64441742.700186%
C64442203.414029%
D64441912.963998%

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 7640 6445 0 0 0.00% 0.00%
B 7640 6445 4 4 0.05% 0.06%
C 7640 6445 0 0 0.00% 0.00%
D 7640 6445 43 43 0.56% 0.67%

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 9 143 14416 77.59 877 860 174.7
A 0 226 7579 38.46 877 860 174.7
A 12 194 6259 30.9 877 860 174.7
B 0 229 71190 429.03 873 855 163.9
B 10 16 46624 279.18 873 855 163.9
B 4 173 38899 232.06 873 855 163.9
C 14 238 131559 667.53 845 853 195.8
C 3 233 28606 141.74 845 853 195.8
C 0 207 6436 28.51 845 853 195.8
D 5 222 328049 1596.72 853 830 204.9
D 1 52 278551 1355.18 853 830 204.9
D 2 234 22617 106.31 853 830 204.9

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