ASTROSAT CZTI

Data Quality Report

Orbit 25487

Creation date: 2024-06-27T19:18:12.415627
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_012T07_9000003718_25487cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25487cztM0_level2_quad_clean.evt
Size (bytes)504,132,480128,062,080
Size480.8 MB 122.1 MB
Events in quadrant A3,023,860881,204
Events in quadrant B3,131,872897,187
Events in quadrant C3,088,303855,774
Events in quadrant D5,583,206791,854

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132560
B0135090
C0134130
D0210970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6488230.354501%
B6488420.647349%
C6488681.048089%
D64885568.569667%

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 7598 6489 0 0 0.00% 0.00%
B 7598 6489 0 0 0.00% 0.00%
C 7598 6489 0 0 0.00% 0.00%
D 7598 6489 481 481 6.33% 7.41%

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 9761 57.71 783 767 155.8
A 3 137 6885 39.26 783 767 155.8
A 0 226 6641 37.69 783 767 155.8
B 12 111 17782 114.96 788 769 148.0
B 0 245 16293 104.9 788 769 148.0
B 11 111 15470 99.34 788 769 148.0
C 14 238 121774 684.79 758 763 176.7
C 3 233 7045 35.55 758 763 176.7
C 13 61 5258 25.44 758 763 176.7
D 1 52 2381157 13308.05 733 711 178.9
D 8 195 198521 1105.87 733 711 178.9
D 12 233 127818 710.6 733 711 178.9

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