ASTROSAT CZTI

Data Quality Report

Orbit 03766

Creation date: 2024-06-27T14:33:24.304563
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/AS1G05_248T01_9000000486_03766cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03766cztM0_level2_quad_clean.evt
Size (bytes)478,169,28081,118,080
Size456.0 MB 77.4 MB
Events in quadrant A4,156,843500,824
Events in quadrant B3,354,969508,565
Events in quadrant C2,990,598499,514
Events in quadrant D3,526,395483,044

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169112
B0143351
C0136281
D0151721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66573655.482950%
B6657731.096590%
C6657550.826198%
D66571352.027941%

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 7257 6658 191 191 2.63% 2.87%
B 7257 6658 9 9 0.12% 0.14%
C 7257 6658 0 0 0.00% 0.00%
D 7257 6658 48 48 0.66% 0.72%

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 0 118 638456 4090.89 754 736 155.9
A 13 251 481211 3082.18 754 736 155.9
A 0 226 63821 404.68 754 736 155.9
B 15 204 214621 1421.54 774 755 150.4
B 15 54 51686 338.53 774 755 150.4
B 5 172 24169 155.63 774 755 150.4
C 2 53 40115 224.51 746 749 175.3
C 8 128 12026 64.31 746 749 175.3
C 8 112 6861 34.86 746 749 175.3
D 8 112 205152 1142.3 745 724 179.0
D 2 37 181711 1011.32 745 724 179.0
D 13 223 83095 460.27 745 724 179.0

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
Veto Counter