ASTROSAT CZTI

Data Quality Report

Orbit 23651

Creation date: 2024-06-27T18:57:11.257119
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_147T01_9000003490_23651cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23651cztM0_level2_quad_clean.evt
Size (bytes)482,189,760104,339,520
Size459.9 MB 99.5 MB
Events in quadrant A3,060,726683,043
Events in quadrant B4,309,475685,874
Events in quadrant C3,164,237674,049
Events in quadrant D3,619,542655,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135671
B0172501
C0137091
D0154521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615120.181406%
B66162593.914752%
C6616340.513906%
D66161191.798670%

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 7700 6616 0 0 0.00% 0.00%
B 7701 6617 172 172 2.23% 2.60%
C 7701 6617 0 0 0.00% 0.00%
D 7701 6616 80 80 1.04% 1.21%

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 10919 62.88 793 776 161.3
A 3 137 6991 38.53 793 776 161.3
A 0 226 6826 37.5 793 776 161.3
B 3 64 1014488 6765.52 786 768 149.8
B 0 189 139264 924.31 786 768 149.8
B 0 229 52935 348.16 786 768 149.8
C 14 238 121611 671.91 770 778 179.8
C 7 247 21759 116.67 770 778 179.8
C 8 128 8963 45.51 770 778 179.8
D 7 238 293093 1561.1 768 746 187.3
D 9 85 155682 827.34 768 746 187.3
D 13 189 138793 737.16 768 746 187.3

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