ASTROSAT CZTI

Data Quality Report

Orbit 22076

Creation date: 2024-06-27T18:36:16.744785
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_138T08_9000003268_22076cztM0_level2.evt modeM0/AS1A07_138T08_9000003268_22076cztM0_level2_quad_clean.evt
Size (bytes)493,456,320104,080,320
Size470.6 MB 99.3 MB
Events in quadrant A3,219,231687,814
Events in quadrant B3,360,082692,373
Events in quadrant C3,276,271665,141
Events in quadrant D4,642,536648,661

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136980
B0140380
C0138560
D0184540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65661241.888517%
B65661652.512945%
C65661482.254036%
D65654226.428027%

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 7506 6567 0 0 0.00% 0.00%
B 7506 6567 27 27 0.36% 0.41%
C 7506 6567 5 5 0.07% 0.08%
D 7505 6566 321 321 4.28% 4.89%

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 10913 61.41 834 818 164.4
A 0 226 7180 38.7 834 818 164.4
A 3 137 6768 36.19 834 818 164.4
B 3 64 66442 427.1 827 807 153.7
B 0 197 20615 128.89 827 807 153.7
B 12 111 18090 112.46 827 807 153.7
C 14 238 127649 685.91 796 801 184.9
C 9 54 25848 135.44 796 801 184.9
C 10 22 18669 96.62 796 801 184.9
D 7 238 1115773 5939.12 782 760 187.7
D 13 104 211047 1120.09 782 760 187.7
D 1 52 118630 627.84 782 760 187.7

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