ASTROSAT CZTI

Data Quality Report

Orbit 23097

Creation date: 2024-06-27T18:49:43.311960
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/AS1A07_049T01_9000003408_23097cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23097cztM0_level2_quad_clean.evt
Size (bytes)528,120,00078,747,840
Size503.7 MB 75.1 MB
Events in quadrant A3,283,731513,090
Events in quadrant B2,849,596526,473
Events in quadrant C3,581,891500,392
Events in quadrant D5,877,218430,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136621
B0123131
C0143171
D0214001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5919611.030579%
B5919510.861632%
C59182524.258195%
D5919123120.797432%

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 6999 5920 30 30 0.43% 0.51%
B 6999 5919 5 5 0.07% 0.08%
C 6998 5919 146 146 2.09% 2.47%
D 6999 5920 1135 1135 16.22% 19.17%

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 6 16 542988 3796.16 710 694 142.9
A 13 254 8800 56.74 710 694 142.9
A 3 137 6175 38.37 710 694 142.9
B 0 190 22435 163.02 708 692 133.4
B 4 216 21721 157.67 708 692 133.4
B 12 111 16356 117.44 708 692 133.4
C 0 10 740293 4654.11 681 686 158.9
C 14 238 107215 670.35 681 686 158.9
C 0 207 45655 282.98 681 686 158.9
D 7 238 1937527 12174.95 653 632 159.1
D 12 233 523351 3285.71 653 632 159.1
D 1 52 321943 2019.7 653 632 159.1

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