ASTROSAT CZTI

Data Quality Report

Orbit 11703

Creation date: 2024-06-27T16:17:07.318345
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/AS1A04_227T01_9000001724_11703cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11703cztM0_level2_quad_clean.evt
Size (bytes)2,309,388,480213,586,560
Size2.2 GB 203.7 MB
Events in quadrant A22,193,1501,276,852
Events in quadrant B11,225,8341,383,461
Events in quadrant C8,253,3031,426,666
Events in quadrant D27,041,6751,118,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0788294
B0452213
C0373143
D0928933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18283394621.582891%
B182836693.659137%
C18283980.536017%
D18283650335.568561%

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 20044 18287 2467 2467 12.31% 13.49%
B 20044 18287 322 322 1.61% 1.76%
C 20044 18287 0 0 0.00% 0.00%
D 20044 18287 5041 5041 25.15% 27.57%

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 12356060 30113.4 1999 1950 410.3
A 1 162 516033 1253.09 1999 1950 410.3
A 6 16 403957 979.9 1999 1950 410.3
B 4 239 1241667 3018.15 2142 2080 410.7
B 3 64 1038987 2524.66 2142 2080 410.7
B 15 204 176347 424.31 2142 2080 410.7
C 13 61 15496 27.28 2114 2127 490.0
C 8 222 15140 26.56 2114 2127 490.0
C 3 202 5142 6.15 2114 2127 490.0
D 13 152 17353829 38756.93 1855 1803 447.7
D 8 195 901682 2009.94 1855 1803 447.7
D 7 80 746135 1662.52 1855 1803 447.7

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