ASTROSAT CZTI

Data Quality Report

Orbit 40856

Creation date: 2024-06-27T22:21:24.308268
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/AS1A12_104T02_9000005572_40856cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40856cztM0_level2_quad_clean.evt
Size (bytes)495,555,84089,049,600
Size472.6 MB 84.9 MB
Events in quadrant A3,136,052621,765
Events in quadrant B3,282,310622,789
Events in quadrant C5,379,402536,859
Events in quadrant D6,095,041508,721

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126763
B0137792
C0197332
D0221492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5807130.223868%
B58072283.926296%
C580783614.396418%
D580776613.190976%

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 7210 5808 5 5 0.07% 0.09%
B 7210 5808 143 143 1.98% 2.46%
C 7210 5807 671 671 9.31% 11.56%
D 7210 5808 637 637 8.83% 10.97%

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 535639 4119.01 634 620 129.9
A 13 248 80915 618.17 634 620 129.9
A 12 189 50874 386.89 634 620 129.9
B 4 171 778491 6398.9 620 602 121.6
B 0 190 22484 180.0 620 602 121.6
B 5 255 18547 147.62 620 602 121.6
C 14 254 2754456 20374.06 575 580 135.2
C 15 214 231037 1704.99 575 580 135.2
C 0 10 62737 459.85 575 580 135.2
D 13 249 2181166 14972.08 591 573 145.6
D 12 79 1118805 7677.85 591 573 145.6
D 1 47 253136 1734.11 591 573 145.6

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