ASTROSAT CZTI

Data Quality Report

Orbit 20190525_A05_088T05_9000002952_level2

Creation date: 2019-05-27T10:21:04.680938
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_088T05_9000002952cztM0_level2_bc.evt modeM0/AS1A05_088T05_9000002952cztM0_level2_quad_clean.evt
Size (bytes)1,918,059,840467,130,240
Size1.8 GB 445.5 MB
Events in quadrant A7,469,2723,088,501
Events in quadrant B7,262,1813,135,076
Events in quadrant C24,924,6062,651,552
Events in quadrant D15,973,3072,792,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0753910
B0747420
C01359400
D01079180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07340
B07340
C07340
D07340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A360817242.006596%
B360817502.078656%
C36081694919.259444%
D36081362810.055154%

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 40291 36077 12 12 0.03% 0.03%
B 40291 36077 1 1 0.00% 0.00%
C 40291 36075 1485 1485 3.69% 4.12%
D 40291 36080 477 477 1.18% 1.32%

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 4 2 240917 594.41 1817 1778 402.3
A 6 16 153316 376.67 1817 1778 402.3
A 0 23 59304 142.99 1817 1778 402.3
B 0 198 68246 187.99 1841 1793 353.5
B 3 64 44984 122.18 1841 1793 353.5
B 0 230 32408 86.61 1841 1793 353.5
C 3 233 18506691 47839.48 1634 1618 386.8
C 7 220 81183 205.69 1634 1618 386.8
C 10 223 39113 96.93 1634 1618 386.8
D 7 238 7914657 19396.49 1729 1659 408.0
D 1 52 1049791 2569.2 1729 1659 408.0
D 2 234 134795 326.35 1729 1659 408.0

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