ASTROSAT CZTI

Data Quality Report

Orbit 11236

Creation date: 2024-06-27T16:10:08.986315
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/AS1T01_200T01_9000001638_11236cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11236cztM0_level2_quad_clean.evt
Size (bytes)592,462,080128,678,400
Size565.0 MB 122.7 MB
Events in quadrant A4,910,053834,392
Events in quadrant B3,848,631868,975
Events in quadrant C3,977,885864,776
Events in quadrant D4,712,033821,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194551
B0164500
C0171940
D0189570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72914586.281717%
B72912893.963791%
C72912393.278014%
D72912773.799204%

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 7291 7291 145 145 1.99% 1.99%
B 7291 7291 35 35 0.48% 0.48%
C 7291 7291 109 109 1.49% 1.49%
D 7291 7291 83 83 1.14% 1.14%

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 5 1067563 6328.92 819 799 168.6
A 15 174 277061 1639.01 819 799 168.6
A 14 238 224441 1326.83 819 799 168.6
B 4 239 433024 2683.96 833 812 161.0
B 15 204 50938 311.27 833 812 161.0
B 0 219 43175 263.07 833 812 161.0
C 4 254 818730 4348.35 807 809 188.1
C 14 234 6380 29.62 807 809 188.1
C 13 61 5797 26.52 807 809 188.1
D 8 195 746546 3838.51 800 774 194.3
D 1 52 375035 1926.33 800 774 194.3
D 10 199 176611 905.04 800 774 194.3

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