ASTROSAT CZTI

Data Quality Report

Orbit 21702

Creation date: 2024-06-27T18:31:16.759195
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_039T02_9000003212_21702cztM0_level2.evt modeM0/AS1A07_039T02_9000003212_21702cztM0_level2_quad_clean.evt
Size (bytes)660,720,960130,835,520
Size630.1 MB 124.8 MB
Events in quadrant A3,279,177881,005
Events in quadrant B3,838,633899,280
Events in quadrant C8,807,032823,601
Events in quadrant D3,602,562861,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146561
B0160221
C0311141
D0154571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71272283.199102%
B71283314.643659%
C7128156521.955668%
D71282163.030303%

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 7262 7128 0 0 0.00% 0.00%
B 7263 7129 71 71 0.98% 1.00%
C 7263 7129 851 851 11.72% 11.94%
D 7263 7129 20 20 0.28% 0.28%

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 13420 73.54 848 826 171.3
A 3 137 7202 37.23 848 826 171.3
A 0 226 7145 36.9 848 826 171.3
B 3 64 366582 2251.63 844 820 162.4
B 0 230 54958 333.27 844 820 162.4
B 0 229 47990 290.38 844 820 162.4
C 8 208 5573215 30084.09 793 795 185.2
C 14 238 123143 660.53 793 795 185.2
C 10 22 6009 28.15 793 795 185.2
D 12 235 126969 619.76 841 814 203.6
D 14 35 94659 461.03 841 814 203.6
D 2 136 67699 328.59 841 814 203.6

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