ASTROSAT CZTI

Data Quality Report

Orbit 46019

Creation date: 2024-06-27T23:18:48.397249
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/AS1A13_033T01_9000006152_46019cztM0_level2.fits modeM0/AS1A13_033T01_9000006152_46019cztM0_level2_quad_clean.evt
Size (bytes)1,509,802,560223,948,800
Size1.4 GB 213.6 MB
Events in quadrant A13,494,9531,581,297
Events in quadrant B24,388,4131,090,506
Events in quadrant C7,412,9061,599,340
Events in quadrant D9,389,1611,448,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497202
B0832992
C0334582
D0386782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03146
C03140
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155746474.154360%
B15575620039.807384%
C155753952.536116%
D155755653.627608%

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 16093 15575 108 108 0.67% 0.69%
B 16094 15574 4763 4763 29.59% 30.58%
C 16094 15574 84 84 0.52% 0.54%
D 16094 15574 278 278 1.73% 1.79%

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 6179976 16927.45 1756 1715 365.0
A 13 248 295038 803.66 1756 1715 365.0
A 15 14 157633 427.19 1756 1715 365.0
B 3 112 18077095 58699.49 1543 1491 307.9
B 4 171 134090 430.61 1543 1491 307.9
B 12 111 39774 124.32 1543 1491 307.9
C 14 254 479696 1156.64 1753 1764 413.2
C 12 2 28639 65.04 1753 1764 413.2
C 12 250 28131 63.81 1753 1764 413.2
D 1 52 1292432 2940.08 1748 1700 439.0
D 2 249 790816 1797.48 1748 1700 439.0
D 2 37 230700 521.62 1748 1700 439.0

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