ASTROSAT CZTI

Data Quality Report

Orbit 04279

Creation date: 2024-06-27T14:39:44.454386
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/AS1G05_240T01_9000000536_04279cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04279cztM0_level2_quad_clean.evt
Size (bytes)567,774,72070,058,880
Size541.5 MB 66.8 MB
Events in quadrant A3,726,620424,842
Events in quadrant B4,724,544423,397
Events in quadrant C2,827,478424,728
Events in quadrant D5,483,657401,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01548329
B01825521
C0130425
D02098135

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63962413.767980%
B6396971.516573%
C6399340.531333%
D63941842.877698%

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 7336 6401 116 116 1.58% 1.81%
B 7336 6401 6 6 0.08% 0.09%
C 7336 6402 1 1 0.01% 0.02%
D 7336 6400 103 103 1.40% 1.61%

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 0 50 793169 5355.06 720 704 148.0
A 8 15 113797 764.22 720 704 148.0
A 0 199 35270 233.58 720 704 148.0
B 3 0 1672217 11752.9 732 716 142.2
B 14 167 95086 663.55 732 716 142.2
B 10 16 73323 510.52 732 716 142.2
C 9 247 21204 123.28 712 715 166.2
C 9 54 11247 63.37 712 715 166.2
C 9 144 10239 57.3 712 715 166.2
D 11 132 1853107 10788.14 704 684 171.7
D 2 232 592266 3445.25 704 684 171.7
D 13 239 223646 1298.49 704 684 171.7

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