ASTROSAT CZTI

Data Quality Report

Orbit 20190510_A05_142T01_9000002904_level2

Creation date: 2019-05-13T12:13:13.997362
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_142T01_9000002904cztM0_level2_bc.evt modeM0/AS1A05_142T01_9000002904cztM0_level2_quad_clean.evt
Size (bytes)1,846,414,080688,167,360
Size1.7 GB 656.3 MB
Events in quadrant A11,682,0304,345,475
Events in quadrant B12,649,4614,384,808
Events in quadrant C12,804,2224,193,196
Events in quadrant D15,043,0824,158,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011200
C011200
D011200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01138590
B01176520
C01186070
D01246770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A548287031.282192%
B5482810691.949734%
C5482810371.891369%
D548289111.661560%

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 64533 54822 2 2 0.00% 0.00%
B 64533 54824 12 12 0.02% 0.02%
C 64533 54826 6 6 0.01% 0.01%
D 64533 54825 71 71 0.11% 0.13%

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 90259 135.57 2997 2942 644.1
A 13 254 72775 108.42 2997 2942 644.1
A 12 194 19682 25.99 2997 2942 644.1
B 7 220 290232 513.88 2994 2920 559.1
B 0 244 190981 336.36 2994 2920 559.1
B 3 64 182107 320.49 2994 2920 559.1
C 3 233 1308764 1972.3 2849 2835 662.1
C 7 247 309752 463.53 2849 2835 662.1
C 5 112 174225 258.84 2849 2835 662.1
D 1 52 2474679 3698.99 2942 2843 668.2
D 12 218 295353 437.73 2942 2843 668.2
D 2 16 280953 416.18 2942 2843 668.2

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