ASTROSAT CZTI

Data Quality Report

Orbit 24853

Creation date: 2024-06-27T19:10:39.471766
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/AS1A08_003T06_9000003636_24853cztM0_level2.evt modeM0/AS1A08_003T06_9000003636_24853cztM0_level2_quad_clean.evt
Size (bytes)461,836,80071,115,840
Size440.4 MB 67.8 MB
Events in quadrant A3,350,293444,256
Events in quadrant B3,358,575457,880
Events in quadrant C3,487,134418,616
Events in quadrant D3,379,005408,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134132
B0134752
C0140502
D0137002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6072320.527009%
B6073611.004446%
C6072681.119895%
D6072280.461133%

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 7422 6073 0 0 0.00% 0.00%
B 7423 6074 0 0 0.00% 0.00%
C 7422 6073 5 5 0.07% 0.08%
D 7422 6073 12 12 0.16% 0.20%

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 6 16 35887 207.62 858 845 168.8
A 13 254 9096 48.89 858 845 168.8
A 0 226 7202 37.66 858 845 168.8
B 12 111 19131 114.71 852 834 159.5
B 11 111 16996 101.33 852 834 159.5
B 3 209 16473 98.05 852 834 159.5
C 7 247 172310 934.9 800 810 183.4
C 14 238 130685 707.99 800 810 183.4
C 2 16 45348 242.79 800 810 183.4
D 1 52 296537 1535.13 808 787 192.7
D 8 195 24067 120.84 808 787 192.7
D 2 234 20245 101.0 808 787 192.7

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