ASTROSAT CZTI

Data Quality Report

Orbit 26590

Creation date: 2024-06-27T19:30:45.984947
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/AS1A09_095T02_9000003846_26590cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26590cztM0_level2_quad_clean.evt
Size (bytes)589,449,600101,534,400
Size562.1 MB 96.8 MB
Events in quadrant A3,162,083694,858
Events in quadrant B3,821,055698,107
Events in quadrant C3,538,414657,413
Events in quadrant D6,933,431614,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130000
B0157210
C0142560
D0246540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5863661.125704%
B5863911.552106%
C58631442.456081%
D586391515.606345%

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 7193 5863 0 0 0.00% 0.00%
B 7193 5863 11 11 0.15% 0.19%
C 7193 5863 40 40 0.56% 0.68%
D 7193 5863 707 707 9.83% 12.06%

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 5 168 20858 125.73 810 798 159.5
A 12 96 12827 75.39 810 798 159.5
A 13 254 9650 55.48 810 798 159.5
B 0 189 611370 4192.33 793 777 145.6
B 3 64 69092 469.05 793 777 145.6
B 5 172 25487 169.66 793 777 145.6
C 4 254 230950 1362.28 752 760 169.0
C 15 208 184258 1085.96 752 760 169.0
C 14 238 124965 735.06 752 760 169.0
D 7 80 3073966 17629.54 737 719 174.3
D 1 52 700795 4015.95 737 719 174.3
D 2 250 296672 1697.72 737 719 174.3

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