ASTROSAT CZTI

Data Quality Report

Orbit 36247

Creation date: 2022-06-13T13:34:28.065811
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/AS1A10_071T37_9000005180_36247cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36247cztM0_level2_quad_clean.evt
Size (bytes)432,722,88062,000,640
Size412.7 MB 59.1 MB
Events in quadrant A2,559,670393,591
Events in quadrant B2,967,972398,624
Events in quadrant C3,441,631380,812
Events in quadrant D3,799,026356,365

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105163
B0117962
C0132022
D0145672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495650.100888%
B49561142.300242%
C49561873.773204%
D49562625.286521%

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 7079 4957 0 0 0.00% 0.00%
B 7079 4957 82 82 1.16% 1.65%
C 7078 4956 168 168 2.37% 3.39%
D 7079 4957 262 262 3.70% 5.29%

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 168695 1365.39 612 602 123.1
A 13 6 11998 92.57 612 602 123.1
A 9 143 8653 65.4 612 602 123.1
B 5 172 305129 2642.48 609 595 115.2
B 5 236 183363 1585.9 609 595 115.2
B 0 189 26720 226.69 609 595 115.2
C 0 207 765004 5619.85 587 594 136.0
C 15 214 206975 1517.29 587 594 136.0
C 0 10 139358 1020.18 587 594 136.0
D 12 6 1171144 8244.22 575 556 142.0
D 13 171 165397 1160.94 575 556 142.0
D 13 249 62005 432.77 575 556 142.0

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