ASTROSAT CZTI

Data Quality Report

Orbit 23027

Creation date: 2024-06-27T18:48:57.380544
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/AS1C05_004T01_9000003404_23027cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23027cztM0_level2_quad_clean.evt
Size (bytes)503,259,840107,573,760
Size479.9 MB 102.6 MB
Events in quadrant A2,983,627719,940
Events in quadrant B3,207,001743,057
Events in quadrant C3,217,308712,655
Events in quadrant D5,414,717651,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129462
B0135632
C0135862
D0203062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171180.291687%
B6171470.761627%
C6171891.442230%
D61704827.811994%

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 7441 6172 0 0 0.00% 0.00%
B 7441 6172 19 19 0.26% 0.31%
C 7441 6172 8 8 0.11% 0.13%
D 7440 6171 313 313 4.21% 5.07%

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 8796 52.61 773 759 152.8
A 0 226 6560 37.98 773 759 152.8
A 3 137 6536 37.82 773 759 152.8
B 4 216 100476 693.15 778 760 143.9
B 0 189 31043 210.5 778 760 143.9
B 3 209 20124 134.6 778 760 143.9
C 14 238 123323 696.69 763 769 175.9
C 0 207 65120 365.82 763 769 175.9
C 0 10 41448 231.25 763 769 175.9
D 9 85 940912 5316.14 742 723 176.9
D 12 227 639770 3613.38 742 723 176.9
D 1 52 599774 3387.23 742 723 176.9

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