ASTROSAT CZTI

Data Quality Report

Orbit 16586

Creation date: 2024-06-27T17:24:43.989161
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/AS1C04_001T01_9000002446_16586cztM0_level2.evt modeM0/AS1C04_001T01_9000002446_16586cztM0_level2_quad_clean.evt
Size (bytes)510,543,360132,085,440
Size486.9 MB 126.0 MB
Events in quadrant A3,528,990916,275
Events in quadrant B3,774,887922,966
Events in quadrant C4,013,159894,607
Events in quadrant D3,716,819826,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146953
B0154192
C0164442
D0155332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6306931.474786%
B6306981.554075%
C63061251.982239%
D63065108.087536%

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 7597 6308 54 54 0.71% 0.86%
B 7597 6308 28 28 0.37% 0.44%
C 7597 6308 6 6 0.08% 0.10%
D 7597 6306 86 86 1.13% 1.36%

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 15 174 439276 2805.88 795 781 156.3
A 15 223 18223 111.61 795 781 156.3
A 9 143 8267 47.9 795 781 156.3
B 15 35 296608 2033.93 797 780 145.4
B 0 229 100677 686.83 797 780 145.4
B 0 85 87939 599.25 797 780 145.4
C 3 233 795638 4430.34 780 785 179.4
C 14 238 123646 684.8 780 785 179.4
C 7 247 51963 285.26 780 785 179.4
D 1 52 463566 2582.57 742 721 179.2
D 5 222 305767 1702.09 742 721 179.2
D 10 70 82496 456.29 742 721 179.2

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