ASTROSAT CZTI

Data Quality Report

Orbit 46652

Creation date: 2024-06-27T23:25:56.740277
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/AS1A13_039T01_9000006246_46652cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46652cztM0_level2_quad_clean.evt
Size (bytes)514,111,680112,965,120
Size490.3 MB 107.7 MB
Events in quadrant A6,611,195740,130
Events in quadrant B3,554,422783,353
Events in quadrant C3,290,695756,730
Events in quadrant D5,009,819633,764

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244790
B0156840
C0154410
D0201780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72713004.125980%
B72711652.269289%
C7272440.605061%
D72726048.305831%

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 7271 7271 13 13 0.18% 0.18%
B 7271 7271 7 7 0.10% 0.10%
C 7272 7272 18 18 0.25% 0.25%
D 7272 7272 541 541 7.44% 7.44%

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 10 83 3459086 21308.59 779 760 162.3
A 7 3 60556 368.44 779 760 162.3
A 0 243 22583 134.46 779 760 162.3
B 0 189 148011 957.63 783 758 153.8
B 0 190 78970 508.63 783 758 153.8
B 0 155 53027 339.92 783 758 153.8
C 14 254 112329 616.03 767 769 181.1
C 12 249 86859 475.39 767 769 181.1
C 9 237 43287 234.78 767 769 181.1
D 5 171 1370863 7545.75 725 699 181.6
D 12 1 293563 1612.86 725 699 181.6
D 13 249 155520 852.63 725 699 181.6

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