ASTROSAT CZTI

Data Quality Report

Orbit 46493

Creation date: 2024-06-27T23:23:49.709030
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/AS1A13_068T05_9000006218_46493cztM0_level2.fits modeM0/AS1A13_068T05_9000006218_46493cztM0_level2_quad_clean.evt
Size (bytes)523,529,280116,193,600
Size499.3 MB 110.8 MB
Events in quadrant A6,193,625775,659
Events in quadrant B3,702,250791,032
Events in quadrant C3,209,742765,590
Events in quadrant D5,713,908683,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223910
B0160610
C0149150
D0219730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72191291.786951%
B72191662.299487%
C7220150.207756%
D72202653.670360%

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 7219 7219 1 1 0.01% 0.01%
B 7219 7219 79 79 1.09% 1.09%
C 7220 7220 3 3 0.04% 0.04%
D 7220 7220 254 254 3.52% 3.52%

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 10 83 3020261 17668.55 814 794 170.9
A 13 254 13251 72.89 814 794 170.9
A 3 137 9877 53.15 814 794 170.9
B 7 221 184020 1136.44 806 779 161.2
B 5 172 181769 1122.48 806 779 161.2
B 0 190 26556 159.87 806 779 161.2
C 14 254 49680 260.25 801 805 187.8
C 3 233 22947 117.9 801 805 187.8
C 12 249 11574 57.34 801 805 187.8
D 1 52 1239856 6260.45 788 763 197.9
D 7 80 395784 1995.82 788 763 197.9
D 12 128 291513 1469.0 788 763 197.9

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