ASTROSAT CZTI

Data Quality Report

Orbit 11849

Creation date: 2024-06-27T16:19:06.667028
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/AS1A04_088T03_9000001750_11849cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11849cztM0_level2_quad_clean.evt
Size (bytes)504,118,08087,333,120
Size480.8 MB 83.3 MB
Events in quadrant A3,370,624560,814
Events in quadrant B3,867,321554,636
Events in quadrant C3,007,316548,626
Events in quadrant D4,570,633517,127

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145743
B0160602
C0135772
D0184582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6643761.144061%
B66431542.318230%
C6643460.692458%
D66435157.752521%

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 7604 6644 1 1 0.01% 0.02%
B 7604 6644 56 56 0.74% 0.84%
C 7604 6645 0 0 0.00% 0.00%
D 7604 6644 397 397 5.22% 5.98%

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 1 162 128412 793.51 791 773 160.9
A 1 178 67903 417.33 791 773 160.9
A 1 161 58851 361.06 791 773 160.9
B 4 239 550612 3634.62 790 769 151.3
B 15 204 84917 556.24 790 769 151.3
B 10 252 44679 290.26 790 769 151.3
C 13 61 5598 27.04 770 774 178.4
C 12 4 3488 15.21 770 774 178.4
C 3 202 1859 6.08 770 774 178.4
D 13 122 988423 5495.46 750 728 179.7
D 9 85 284905 1581.14 750 728 179.7
D 1 52 197396 1094.25 750 728 179.7

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