ASTROSAT CZTI

Data Quality Report

Orbit 36531

Creation date: 2024-06-27T21:28:01.105224
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_089T02_9000005216_36531cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36531cztM0_level2_quad_clean.evt
Size (bytes)474,733,44060,520,320
Size452.7 MB 57.7 MB
Events in quadrant A3,137,311361,477
Events in quadrant B3,149,619362,832
Events in quadrant C4,083,321348,457
Events in quadrant D3,593,337334,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130343
B0131512
C0157662
D0148552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6092580.952068%
B6092340.558109%
C60923625.942219%
D60921622.659225%

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 9259 6094 37 37 0.40% 0.61%
B 9259 6094 12 12 0.13% 0.20%
C 9259 6094 284 284 3.07% 4.66%
D 9259 6094 130 130 1.40% 2.13%

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 10 83 219123 1524.31 708 694 143.3
A 9 143 170828 1187.28 708 694 143.3
A 13 254 8766 56.33 708 694 143.3
B 5 255 77382 572.28 705 687 134.0
B 5 172 72822 538.26 705 687 134.0
B 0 189 55965 412.47 705 687 134.0
C 14 254 804953 5167.82 667 671 155.6
C 0 10 329110 2110.35 667 671 155.6
C 15 214 257483 1650.12 667 671 155.6
D 13 249 442675 2674.69 677 658 165.3
D 12 16 155003 933.96 677 658 165.3
D 2 250 88405 530.97 677 658 165.3

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