ASTROSAT CZTI

Data Quality Report

Orbit 14649

Creation date: 2024-06-27T16:57:59.932828
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/AS1G08_076T02_9000002164_14649cztM0_level2.evt modeM0/AS1G08_076T02_9000002164_14649cztM0_level2_quad_clean.evt
Size (bytes)599,797,44093,571,200
Size572.0 MB 89.2 MB
Events in quadrant A6,803,105596,772
Events in quadrant B3,388,209614,341
Events in quadrant C3,860,131594,574
Events in quadrant D3,681,885582,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247073
B0140612
C0157482
D0149902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A637967610.597272%
B6379671.050321%
C6379380.595705%
D63791492.335789%

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 7625 6380 500 500 6.56% 7.84%
B 7625 6381 3 3 0.04% 0.05%
C 7625 6381 3 3 0.04% 0.05%
D 7625 6381 121 121 1.59% 1.90%

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 0 253 3587206 22062.39 794 778 162.6
A 0 23 47850 289.57 794 778 162.6
A 12 189 38961 234.89 794 778 162.6
B 0 189 117364 765.42 810 793 152.3
B 0 190 26587 169.37 810 793 152.3
B 0 230 18628 117.11 810 793 152.3
C 3 233 783650 4352.33 778 784 179.9
C 0 207 22907 122.99 778 784 179.9
C 5 223 20077 107.26 778 784 179.9
D 10 199 406336 1985.83 769 752 204.2
D 13 122 161894 788.99 769 752 204.2
D 15 0 68014 329.33 769 752 204.2

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