ASTROSAT CZTI

Data Quality Report

Orbit 20190517_A06_003T02_9000002926_level2

Creation date: 2019-05-20T14:17:48.505439
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/AS1A06_003T02_9000002926cztM0_level2_bc.evt modeM0/AS1A06_003T02_9000002926cztM0_level2_quad_clean.evt
Size (bytes)1,225,074,240402,773,760
Size1.1 GB 384.1 MB
Events in quadrant A6,553,4572,631,932
Events in quadrant B7,257,4052,663,676
Events in quadrant C6,279,8712,540,987
Events in quadrant D14,775,2112,114,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06660
B06660
C06660
D06660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0675940
B0698430
C0674340
D01102030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326855411.655194%
B326856742.062108%
C326856431.967263%
D32685520215.915558%

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 46856 32686 11 11 0.02% 0.03%
B 46856 32683 5 5 0.01% 0.02%
C 46856 32686 0 0 0.00% 0.00%
D 46856 32685 414 414 0.88% 1.27%

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 5 16 115785 312.4 1663 1629 365.4
A 13 254 25787 66.11 1663 1629 365.4
A 11 29 13314 31.98 1663 1629 365.4
B 3 112 270056 837.85 1680 1637 320.4
B 7 220 189242 585.6 1680 1637 320.4
B 4 216 72798 222.12 1680 1637 320.4
C 3 233 56402 143.82 1610 1596 381.1
C 9 221 12048 27.43 1610 1596 381.1
C 7 247 12045 27.42 1610 1596 381.1
D 1 20 3997144 11408.37 1482 1423 350.2
D 1 52 2733206 7799.64 1482 1423 350.2
D 12 218 1563497 4459.95 1482 1423 350.2

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