ASTROSAT CZTI

Data Quality Report

Orbit 11674

Creation date: 2024-06-27T16:16:53.337879
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/AS1T01_207T01_9000001720_11674cztM0_level2.evt modeM0/AS1T01_207T01_9000001720_11674cztM0_level2_quad_clean.evt
Size (bytes)86,682,24014,201,280
Size82.7 MB 13.5 MB
Events in quadrant A842,93784,933
Events in quadrant B560,62789,098
Events in quadrant C546,14886,622
Events in quadrant D596,32783,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032831
B022990
C022650
D023670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1122625.525847%
B112220.178253%
C112210.089127%
D112200.000000%

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 1123 1123 43 43 3.83% 3.83%
B 1123 1123 0 0 0.00% 0.00%
C 1123 1123 0 0 0.00% 0.00%
D 1123 1123 1 1 0.09% 0.09%

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 8 5 202426 6737.31 136 133 30.0
A 1 162 43470 1443.33 136 133 30.0
A 1 178 24306 805.08 136 133 30.0
B 3 64 11255 383.16 139 135 29.0
B 15 204 4181 139.41 139 135 29.0
B 12 111 3245 107.16 139 135 29.0
C 14 234 2023 55.07 139 139 34.2
C 13 61 1007 25.37 139 139 34.2
C 3 202 414 8.04 139 139 34.2
D 8 195 57534 1635.72 137 133 35.1
D 13 137 9606 269.95 137 133 35.1
D 10 157 6992 195.46 137 133 35.1

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