ASTROSAT CZTI

Data Quality Report

Orbit 14902

Creation date: 2024-06-27T17:01:06.844206
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/AS1A04_011T09_9000002202_14902cztM0_level2.evt modeM0/AS1A04_011T09_9000002202_14902cztM0_level2_quad_clean.evt
Size (bytes)1,269,780,480248,964,480
Size1.2 GB 237.4 MB
Events in quadrant A8,677,3501,618,548
Events in quadrant B11,278,3291,520,783
Events in quadrant C8,686,4461,553,990
Events in quadrant D8,559,1031,569,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383884
B0458453
C0380613
D0387463

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18550860.463612%
B185507113.832884%
C18550470.253369%
D18550550.296496%

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 20391 18554 1 1 0.00% 0.01%
B 20391 18554 381 381 1.87% 2.05%
C 20391 18554 3 3 0.01% 0.02%
D 20391 18554 15 15 0.07% 0.08%

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 12 189 181145 412.15 2175 2128 434.3
A 3 1 65938 146.91 2175 2128 434.3
A 11 29 29929 64.01 2175 2128 434.3
B 10 16 2159126 5382.39 2116 2060 400.8
B 0 229 490931 1219.85 2116 2060 400.8
B 0 189 128189 314.72 2116 2060 400.8
C 3 233 436932 894.88 2109 2118 485.9
C 13 61 15131 26.78 2109 2118 485.9
C 10 22 12328 21.01 2109 2118 485.9
D 7 254 188787 374.06 2115 2063 499.2
D 13 104 91612 179.39 2115 2063 499.2
D 13 122 89112 174.38 2115 2063 499.2

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