ASTROSAT CZTI

Data Quality Report

Orbit 43788

Creation date: 2024-06-27T22:55:46.489401
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_018T01_9000005906_43788cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43788cztM0_level2_quad_clean.evt
Size (bytes)733,798,08097,174,080
Size699.8 MB 92.7 MB
Events in quadrant A5,111,563701,258
Events in quadrant B4,619,386733,012
Events in quadrant C11,936,674412,189
Events in quadrant D4,980,732632,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197634
B0181062
C0400152
D0193312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66483134.708183%
B66482473.715403%
C6648319047.984356%
D66483615.430205%

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 7573 6649 190 190 2.51% 2.86%
B 7573 6649 126 126 1.66% 1.90%
C 7573 6648 3143 3143 41.50% 47.28%
D 7573 6649 288 288 3.80% 4.33%

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 1008450 6374.33 757 741 158.1
A 15 223 990809 6262.74 757 741 158.1
A 2 79 118288 743.55 757 741 158.1
B 0 200 610881 4024.93 760 735 151.6
B 7 205 371152 2443.52 760 735 151.6
B 5 235 329061 2165.86 760 735 151.6
C 15 174 8735074 57003.54 648 652 153.2
C 15 190 233929 1522.44 648 652 153.2
C 15 158 187420 1218.91 648 652 153.2
D 5 222 868558 4596.54 741 719 188.8
D 1 52 261474 1381.1 741 719 188.8
D 13 249 256245 1353.4 741 719 188.8

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