ASTROSAT CZTI

Data Quality Report

Orbit 06246

Creation date: 2024-06-27T15:04:40.589385
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/AS1A02_151T01_9000000818_06246cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06246cztM0_level2_quad_clean.evt
Size (bytes)1,206,420,480245,203,200
Size1.1 GB 233.8 MB
Events in quadrant A8,883,7121,547,366
Events in quadrant B8,952,4931,556,862
Events in quadrant C8,124,8651,531,727
Events in quadrant D9,289,1651,481,285

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393905
B0399364
C0384664
D0410838

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189971620.852766%
B189972661.400221%
C18997770.405327%
D189961190.626448%

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 33882 19001 14 14 0.04% 0.07%
B 33882 19001 116 116 0.34% 0.61%
C 33882 19001 0 0 0.00% 0.00%
D 33882 19000 33 33 0.10% 0.17%

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 15 236 517254 1187.83 2136 2089 433.7
A 4 2 63945 142.62 2136 2089 433.7
A 14 111 35643 77.37 2136 2089 433.7
B 0 219 375763 908.5 2157 2099 411.3
B 3 64 109227 260.46 2157 2099 411.3
B 15 204 53946 126.06 2157 2099 411.3
C 13 61 16435 29.9 2081 2086 480.0
C 8 222 8209 12.76 2081 2086 480.0
C 3 202 5173 6.43 2081 2086 480.0
D 2 63 682605 1338.02 2078 2012 508.7
D 2 152 312778 610.95 2078 2012 508.7
D 2 136 170455 331.15 2078 2012 508.7

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