ASTROSAT CZTI

Data Quality Report

Orbit 36724

Creation date: 2024-06-27T21:30:48.344438
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/AS1A11_101T01_9000005238_36724cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36724cztM0_level2_quad_clean.evt
Size (bytes)405,941,76070,853,760
Size387.1 MB 67.6 MB
Events in quadrant A2,503,709457,419
Events in quadrant B2,981,140473,186
Events in quadrant C3,632,732437,993
Events in quadrant D2,840,666430,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104573
B0119802
C0138182
D0115912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493480.162140%
B4934280.567491%
C49343336.749088%
D4934220.445886%

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 7027 4935 2 2 0.03% 0.04%
B 7027 4935 20 20 0.28% 0.41%
C 7027 4935 259 259 3.69% 5.25%
D 7027 4935 19 19 0.27% 0.39%

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 201077 1708.54 587 576 117.4
A 9 143 22653 188.13 587 576 117.4
A 13 254 7983 63.12 587 576 117.4
B 4 171 432834 3879.72 589 577 111.4
B 5 255 127414 1138.42 589 577 111.4
B 0 221 28058 246.66 589 577 111.4
C 14 254 816883 6413.48 551 555 127.3
C 0 10 373557 2930.49 551 555 127.3
C 15 214 218398 1711.48 551 555 127.3
D 7 223 211655 1535.75 564 550 137.5
D 13 249 149482 1083.45 564 550 137.5
D 1 20 99865 722.5 564 550 137.5

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