ASTROSAT CZTI

Data Quality Report

Orbit 47600

Creation date: 2024-07-17T12:00:03.401050
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_037T05_9000006338_47600cztM0_level2.fits modeM0/AS1A13_037T05_9000006338_47600cztM0_level2_quad_clean.evt
Size (bytes)609,554,880103,965,120
Size581.3 MB 99.1 MB
Events in quadrant A7,783,450698,363
Events in quadrant B4,175,692719,326
Events in quadrant C3,299,606710,696
Events in quadrant D6,769,750537,351

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282781
B0169191
C0147501
D0249731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69094556.585613%
B69093374.877696%
C6910660.955137%
D6910120117.380608%

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 7669 6910 234 234 3.05% 3.39%
B 7669 6910 199 199 2.59% 2.88%
C 7670 6911 2 2 0.03% 0.03%
D 7670 6911 1029 1029 13.42% 14.89%

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 3872767 24660.37 749 732 157.0
A 13 248 573415 3647.33 749 732 157.0
A 9 191 412987 2625.59 749 732 157.0
B 5 172 465465 3137.53 750 727 148.1
B 5 255 197098 1325.74 750 727 148.1
B 5 32 158408 1064.53 750 727 148.1
C 3 233 284519 1586.61 754 756 178.8
C 14 254 76777 425.06 754 756 178.8
C 13 61 5117 24.38 754 756 178.8
D 2 165 1939505 11130.92 681 659 174.2
D 12 2 1471916 8446.49 681 659 174.2
D 2 249 392510 2249.62 681 659 174.2

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