ASTROSAT CZTI

Data Quality Report

Orbit 43987

Creation date: 2024-06-27T22:58:00.144537
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_065T06_9000005924_43987cztM0_level2.fits modeM0/AS1A13_065T06_9000005924_43987cztM0_level2_quad_clean.evt
Size (bytes)42,848,6405,794,560
Size40.9 MB 5.5 MB
Events in quadrant A626,4821,835
Events in quadrant B264,80642,324
Events in quadrant C323,00446,920
Events in quadrant D332,14843,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05340
B05641
C05038
D05747

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099
B022
C022
D044

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690814847
B077486639
C064165065
D076046276

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30427891.447368%
B469449.381663%
C553285.063291%
D522264.980843%

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 2115 448 100 100 4.73% 22.32%
B 2631 627 0 0 0.00% 0.00%
C 2875 733 2 2 0.07% 0.27%
D 2843 674 0 0 0.00% 0.00%

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 15 223 468742 58355.28 28 27 8.0
A 14 238 25534 3175.64 28 27 8.0
A 10 83 23086 2870.86 28 27 8.0
B 12 111 1874 111.71 66 64 16.2
B 14 111 1693 100.54 66 64 16.2
B 11 111 1692 100.48 66 64 16.2
C 14 254 7682 357.95 78 78 21.2
C 15 158 3432 157.89 78 78 21.2
C 15 157 2605 118.96 78 78 21.2
D 1 52 13877 654.01 74 71 21.1
D 4 235 11793 555.29 74 71 21.1
D 7 80 8617 404.83 74 71 21.1

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