ASTROSAT CZTI

Data Quality Report

Orbit 14275

Creation date: 2024-06-27T16:52:48.442693
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_014T01_9000002104_14275cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14275cztM0_level2_quad_clean.evt
Size (bytes)539,187,84077,618,880
Size514.2 MB 74.0 MB
Events in quadrant A3,682,149476,361
Events in quadrant B4,183,547469,702
Events in quadrant C3,862,129446,732
Events in quadrant D4,106,239449,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154192
B0169531
C0159011
D0171691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72971512.069344%
B72972713.713855%
C72971141.562286%
D72971371.877484%

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 7713 7299 0 0 0.00% 0.00%
B 7713 7299 65 65 0.84% 0.89%
C 7713 7300 2 2 0.03% 0.03%
D 7713 7300 32 32 0.41% 0.44%

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 12 189 160127 871.45 905 884 182.7
A 8 15 16692 86.51 905 884 182.7
A 9 143 15149 78.06 905 884 182.7
B 0 229 405916 2355.97 890 868 171.9
B 0 182 112746 650.74 890 868 171.9
B 10 244 63843 366.29 890 868 171.9
C 3 233 418247 2067.75 867 870 201.9
C 6 96 62116 303.42 867 870 201.9
C 13 61 6229 26.55 867 870 201.9
D 5 222 358181 1719.45 872 851 207.8
D 10 199 137004 655.16 872 851 207.8
D 10 172 111351 531.72 872 851 207.8

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