ASTROSAT CZTI

Data Quality Report

Orbit 17546

Creation date: 2024-06-27T17:37:50.633518
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/AS1T03_066T01_9000002600_17546cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17546cztM0_level2_quad_clean.evt
Size (bytes)551,692,80076,550,400
Size526.1 MB 73.0 MB
Events in quadrant A4,163,155460,642
Events in quadrant B3,933,433466,929
Events in quadrant C4,285,620445,572
Events in quadrant D3,841,720447,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168971
B0161871
C0170741
D0160501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71321732.425687%
B71331992.789850%
C71332473.462779%
D71331381.934670%

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 7782 7133 59 59 0.76% 0.83%
B 7783 7133 49 49 0.63% 0.69%
C 7783 7133 89 89 1.14% 1.25%
D 7783 7133 58 58 0.75% 0.81%

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 14 237 499901 2856.98 870 851 174.7
A 15 174 320073 1827.49 870 851 174.7
A 0 226 7536 38.27 870 851 174.7
B 10 245 475736 2877.57 863 841 165.0
B 0 244 21020 122.27 863 841 165.0
B 12 111 19726 114.43 863 841 165.0
C 0 79 584669 3007.63 830 835 194.1
C 3 233 296499 1523.12 830 835 194.1
C 14 238 125926 644.41 830 835 194.1
D 5 222 485791 2349.91 847 823 206.4
D 13 189 80215 384.69 847 823 206.4
D 2 234 26265 123.28 847 823 206.4

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