ASTROSAT CZTI

Data Quality Report

Orbit 12224

Creation date: 2024-06-27T16:24:01.909149
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/AS1C03_014T01_9000001804_12224cztM0_level2.evt modeM0/AS1C03_014T01_9000001804_12224cztM0_level2_quad_clean.evt
Size (bytes)1,465,698,240279,702,720
Size1.4 GB 266.7 MB
Events in quadrant A12,642,3131,865,836
Events in quadrant B14,702,2931,772,909
Events in quadrant C7,140,1781,904,005
Events in quadrant D8,827,8561,827,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481894
B0545643
C0325213
D0374223

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1595611717.338932%
B15956264916.601905%
C15956780.488844%
D159563872.425420%

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 17692 15960 754 754 4.26% 4.72%
B 17692 15958 1541 1541 8.71% 9.66%
C 17692 15960 12 12 0.07% 0.08%
D 17692 15959 204 204 1.15% 1.28%

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 15 249 2234107 6055.59 1814 1774 368.6
A 8 15 2004180 5431.88 1814 1774 368.6
A 13 251 386003 1042.29 1814 1774 368.6
B 4 239 3982096 12366.08 1716 1672 321.9
B 4 206 2196038 6817.29 1716 1672 321.9
B 3 64 1174780 3644.52 1716 1672 321.9
C 15 208 98818 235.6 1786 1796 411.8
C 4 175 28961 65.97 1786 1796 411.8
C 5 112 13665 28.82 1786 1796 411.8
D 1 52 965847 2259.77 1772 1715 426.6
D 10 50 252689 588.24 1772 1715 426.6
D 14 34 205934 478.66 1772 1715 426.6

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