ASTROSAT CZTI

Data Quality Report

Orbit 17773

Creation date: 2024-06-27T17:40:42.497681
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/AS1A05_015T01_9000002650_17773cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17773cztM0_level2_quad_clean.evt
Size (bytes)611,012,160103,403,520
Size582.7 MB 98.6 MB
Events in quadrant A3,266,132693,476
Events in quadrant B3,408,782718,133
Events in quadrant C5,579,214631,355
Events in quadrant D5,803,685628,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139503
B0144022
C0207502
D0219182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6584320.486027%
B6585550.835232%
C6585104015.793470%
D658585612.999241%

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 9149 6586 0 0 0.00% 0.00%
B 9150 6587 2 2 0.02% 0.03%
C 9150 6586 597 597 6.52% 9.06%
D 9150 6586 740 740 8.09% 11.24%

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 16 12990 71.69 845 828 169.6
A 12 194 8225 43.6 845 828 169.6
A 0 226 7373 38.58 845 828 169.6
B 0 219 36042 221.4 853 833 159.0
B 12 111 18311 109.91 853 833 159.0
B 11 111 15855 94.46 853 833 159.0
C 4 254 2439015 14025.45 754 763 173.8
C 14 238 117927 673.96 754 763 173.8
C 5 218 46695 264.21 754 763 173.8
D 7 238 2789966 15688.94 752 736 177.8
D 10 70 92486 516.08 752 736 177.8
D 2 234 27443 150.22 752 736 177.8

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