ASTROSAT CZTI

Data Quality Report

Orbit 24517

Creation date: 2024-06-27T19:06:48.152399
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/AS1T03_183T01_9000003606_24517cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24517cztM0_level2_quad_clean.evt
Size (bytes)552,182,400118,480,320
Size526.6 MB 113.0 MB
Events in quadrant A3,422,249817,562
Events in quadrant B5,622,433783,178
Events in quadrant C3,099,915790,230
Events in quadrant D4,163,333769,529

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142281
B0208303
C0132671
D0163901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6130450.734095%
B613075912.381729%
C6130721.174551%
D61301061.729201%

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 7260 6131 0 0 0.00% 0.00%
B 7260 6131 465 465 6.40% 7.58%
C 7260 6131 1 1 0.01% 0.02%
D 7260 6131 90 90 1.24% 1.47%

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 14 111 389515 2496.89 781 768 155.7
A 6 16 23355 145.07 781 768 155.7
A 13 254 9768 57.81 781 768 155.7
B 3 64 2564194 18465.91 744 727 138.8
B 0 190 127514 913.31 744 727 138.8
B 12 111 16320 112.32 744 727 138.8
C 14 238 119216 698.31 737 743 169.7
C 10 9 57121 332.31 737 743 169.7
C 2 16 38803 224.34 737 743 169.7
D 1 52 745274 4143.99 748 727 179.7
D 12 218 327602 1819.32 748 727 179.7
D 8 195 209855 1163.96 748 727 179.7

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