ASTROSAT CZTI

Data Quality Report

Orbit 11220

Creation date: 2024-06-27T16:09:56.808908
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_11220cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11220cztM0_level2_quad_clean.evt
Size (bytes)603,492,480127,431,360
Size575.5 MB 121.5 MB
Events in quadrant A6,342,079800,650
Events in quadrant B3,883,369865,830
Events in quadrant C3,088,780878,114
Events in quadrant D4,484,618823,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236473
B0163692
C0144202
D0182122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A705090712.865248%
B70502092.964539%
C7050500.709220%
D70502673.787234%

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 7760 7052 590 590 7.60% 8.37%
B 7760 7052 60 60 0.77% 0.85%
C 7760 7052 0 0 0.00% 0.00%
D 7760 7052 181 181 2.33% 2.57%

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 3163589 20640.37 759 745 153.2
A 15 174 66762 430.82 759 745 153.2
A 1 162 40952 262.39 759 745 153.2
B 4 239 553468 3633.28 807 787 152.1
B 15 204 67881 441.07 807 787 152.1
B 4 81 37882 243.86 807 787 152.1
C 4 254 7382 36.14 789 791 182.4
C 13 61 5812 27.53 789 791 182.4
C 12 4 3796 16.47 789 791 182.4
D 1 52 546433 2975.51 770 748 183.4
D 13 152 235508 1280.1 770 748 183.4
D 2 14 196514 1067.47 770 748 183.4

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