ASTROSAT CZTI

Data Quality Report

Orbit 36616

Creation date: 2024-06-27T21:29:13.161665
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/AS1A10_073T02_9000005226_36616cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36616cztM0_level2_quad_clean.evt
Size (bytes)456,275,52051,557,760
Size435.1 MB 49.2 MB
Events in quadrant A2,858,648330,278
Events in quadrant B3,487,453276,562
Events in quadrant C2,915,630316,327
Events in quadrant D4,224,277293,977

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116802
B0134771
C0118521
D0158891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48921422.902698%
B489253510.936222%
C48921092.228128%
D48923457.052330%

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 4892 4892 62 62 1.27% 1.27%
B 4892 4892 462 462 9.44% 9.44%
C 4892 4892 92 92 1.88% 1.88%
D 4892 4892 325 325 6.64% 6.64%

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 15 223 539726 4747.36 559 549 113.6
A 10 83 147649 1295.19 559 549 113.6
A 10 255 7376 60.11 559 549 113.6
B 4 171 1216781 12184.81 513 500 99.8
B 0 213 110121 1098.19 513 500 99.8
B 0 219 45347 449.28 513 500 99.8
C 0 10 445596 3487.72 539 542 127.6
C 15 214 202261 1580.8 539 542 127.6
C 14 254 160211 1251.27 539 542 127.6
D 12 235 1730772 13235.4 532 516 130.7
D 2 153 103371 786.78 532 516 130.7
D 13 171 76979 584.9 532 516 130.7

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