ASTROSAT CZTI

Data Quality Report

Orbit 11795

Creation date: 2024-06-27T16:18:22.948334
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/AS1G08_058T09_9000001744_11795cztM0_level2.evt modeM0/AS1G08_058T09_9000001744_11795cztM0_level2_quad_clean.evt
Size (bytes)494,674,56079,626,240
Size471.8 MB 75.9 MB
Events in quadrant A3,627,366498,508
Events in quadrant B4,082,997509,679
Events in quadrant C2,993,571506,073
Events in quadrant D3,857,864465,109

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146863
B0161402
C0126962
D0155922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6183550.889536%
B61831582.555394%
C618390.145560%
D61832023.267022%

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 7519 6184 6 6 0.08% 0.10%
B 7519 6184 71 71 0.94% 1.15%
C 7519 6184 0 0 0.00% 0.00%
D 7519 6184 170 170 2.26% 2.75%

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 8 15 291865 1845.34 779 764 157.7
A 1 162 132109 832.62 779 764 157.7
A 1 178 71684 449.57 779 764 157.7
B 4 239 425529 2883.91 785 767 147.3
B 10 16 385861 2614.58 785 767 147.3
B 3 64 88443 595.27 785 767 147.3
C 8 128 6947 35.0 764 772 176.4
C 13 61 5534 26.99 764 772 176.4
C 8 112 3849 17.44 764 772 176.4
D 1 52 579692 3230.88 745 728 179.2
D 9 85 227112 1263.32 745 728 179.2
D 13 249 78593 434.52 745 728 179.2

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