ASTROSAT CZTI

Data Quality Report

Orbit 46586

Creation date: 2024-06-27T23:25:06.596378
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_092T03_9000006234_46586cztM0_level2.fits modeM0/AS1A13_092T03_9000006234_46586cztM0_level2_quad_clean.evt
Size (bytes)629,835,840102,879,360
Size600.7 MB 98.1 MB
Events in quadrant A6,821,534692,152
Events in quadrant B3,661,775732,721
Events in quadrant C3,171,519710,960
Events in quadrant D9,135,005505,897

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248843
B0155462
C0143492
D0318782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67772884.249668%
B67771091.608381%
C6777340.501697%
D6777182126.870297%

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 7722 6778 120 120 1.55% 1.77%
B 7722 6778 24 24 0.31% 0.35%
C 7722 6778 16 16 0.21% 0.24%
D 7722 6778 1788 1788 23.15% 26.38%

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 3658100 23853.5 736 718 153.3
A 0 247 182181 1183.5 736 718 153.3
A 15 235 48254 310.03 736 718 153.3
B 0 189 218007 1476.36 744 720 147.2
B 2 2 137235 927.55 744 720 147.2
B 4 158 77958 524.8 744 720 147.2
C 14 254 212142 1212.65 738 742 174.3
C 3 233 25336 141.08 738 742 174.3
C 12 2 25281 140.76 738 742 174.3
D 13 138 3878169 23323.84 663 642 166.2
D 1 52 1316177 7913.12 663 642 166.2
D 13 249 640824 3850.78 663 642 166.2

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