ASTROSAT CZTI

Data Quality Report

Orbit 11352

Creation date: 2024-06-27T16:11:42.435872
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_062T01_9000001660_11352cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11352cztM0_level2_quad_clean.evt
Size (bytes)588,205,44076,694,400
Size561.0 MB 73.1 MB
Events in quadrant A3,728,789460,181
Events in quadrant B4,556,915448,592
Events in quadrant C3,425,675463,916
Events in quadrant D5,598,716432,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159782
B0185321
C0153761
D0215661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74271792.410125%
B74274826.489834%
C7427851.144473%
D74276658.953817%

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 7442 7428 1 1 0.01% 0.01%
B 7442 7428 165 165 2.22% 2.22%
C 7442 7428 1 1 0.01% 0.01%
D 7442 7427 451 451 6.06% 6.07%

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 13 251 203534 1118.1 875 855 181.3
A 15 174 61956 337.07 875 855 181.3
A 1 162 31847 170.97 875 855 181.3
B 4 239 893301 5324.86 867 844 167.6
B 3 64 175468 1041.9 867 844 167.6
B 3 189 40943 239.25 867 844 167.6
C 14 234 18064 85.62 866 869 200.8
C 8 128 11456 52.71 866 869 200.8
C 4 175 7498 33.01 866 869 200.8
D 10 253 1505982 7591.62 812 788 198.3
D 13 152 430691 2168.27 812 788 198.3
D 8 195 292621 1471.89 812 788 198.3

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