ASTROSAT CZTI

Data Quality Report

Orbit 20170925_G07_062T01_9000001560_level2

Creation date: 2025-11-17T08:27:17.327885
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/AS1G07_062T01_9000001560cztM0_level2.fits modeM0/AS1G07_062T01_9000001560cztM0_level2_quad_clean.evt
Size (bytes)460,653,120681,877,440
Size439.3 MB 650.3 MB
Events in quadrant A2,749,9204,483,292
Events in quadrant B2,564,2044,239,622
Events in quadrant C2,749,2224,439,331
Events in quadrant D2,328,6203,935,305

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110090
B01474200
C01056770
D01407480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010560
B010580
C010580
D010580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518108431.627099%
B5180848039.270769%
C518013050.588792%
D5181124324.693984%

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 58018 51815 0 0 0.00% 0.00%
B 58018 51810 0 0 0.00% 0.00%
C 58018 51818 0 0 0.00% 0.00%
D 58018 51787 0 0 0.00% 0.00%

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 0 29 2666 10.93 716 672 182.5
A 7 110 2262 8.71 716 672 182.5
A 0 30 2119 7.93 716 672 182.5
B 2 9 2240 11.81 677 646 135.0
B 14 254 1764 8.28 677 646 135.0
B 3 17 1721 7.96 677 646 135.0
C 12 241 1936 6.71 726 676 187.9
C 2 191 1890 6.46 726 676 187.9
C 3 126 1828 6.13 726 676 187.9
D 6 231 1769 6.49 663 602 179.7
D 3 14 1731 6.28 663 602 179.7
D 7 5 1673 5.96 663 602 179.7

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