ASTROSAT CZTI

Data Quality Report

Orbit 33765

Creation date: 2024-06-27T20:52:25.014211
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/AS1A11_086T01_9000004820_33765cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33765cztM0_level2_quad_clean.evt
Size (bytes)2,655,682,560291,847,680
Size2.5 GB 278.3 MB
Events in quadrant A25,839,0261,738,439
Events in quadrant B15,405,0841,817,205
Events in quadrant C15,237,6801,822,400
Events in quadrant D22,244,7291,716,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05140
B05140
C05140
D05140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0936576
B0620905
C0613895
D0837665

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25354394515.559675%
B253548563.376193%
C253545602.208724%
D2535413355.265441%

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 32335 25356 3221 3221 9.96% 12.70%
B 32335 25354 604 604 1.87% 2.38%
C 32335 25356 487 487 1.51% 1.92%
D 32335 25356 1120 1120 3.46% 4.42%

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 15 169 11575730 21152.98 2772 2719 547.1
A 15 237 3347787 6114.07 2772 2719 547.1
A 7 16 131902 236.12 2772 2719 547.1
B 5 172 2069222 3717.77 2925 2845 555.8
B 5 255 783317 1404.2 2925 2845 555.8
B 0 190 275884 491.24 2925 2845 555.8
C 9 187 1509434 2280.7 2878 2900 660.6
C 15 214 1090714 1646.81 2878 2900 660.6
C 0 10 386859 581.26 2878 2900 660.6
D 8 195 5352854 7616.99 2860 2779 702.4
D 2 250 1655773 2353.39 2860 2779 702.4
D 2 249 1086632 1543.1 2860 2779 702.4

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