ASTROSAT CZTI

Data Quality Report

Orbit 20190920_A05_144T02_9000003176_level2

Creation date: 2019-09-24T12:35:29.904576
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_144T02_9000003176cztM0_level2_bc.evt modeM0/AS1A05_144T02_9000003176cztM0_level2_quad_clean.evt
Size (bytes)3,442,665,6001,304,219,520
Size3.2 GB 1.2 GB
Events in quadrant A18,171,4908,441,495
Events in quadrant B19,416,3708,567,720
Events in quadrant C22,955,0138,366,684
Events in quadrant D37,700,9718,072,981

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01410
C01410
D01410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01808080
B01852080
C01997050
D02575540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018020
B018020
C018020
D018020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A883546540.740204%
B883548490.960907%
C8835421772.463952%
D8835458586.630147%

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 102544 88357 3 3 0.00% 0.00%
B 102544 88354 5 5 0.00% 0.01%
C 102544 88356 1 1 0.00% 0.00%
D 102544 88355 342 342 0.33% 0.39%

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 13 254 136444 130.52 4655 4577 1010.3
A 15 48 85794 80.39 4655 4577 1010.3
A 12 96 50806 45.76 4655 4577 1010.3
B 0 230 417050 470.76 4685 4580 876.2
B 0 190 248920 278.87 4685 4580 876.2
B 3 64 179747 199.92 4685 4580 876.2
C 3 233 5391971 5128.47 4501 4493 1050.5
C 10 91 188834 175.48 4501 4493 1050.5
C 8 128 27534 21.93 4501 4493 1050.5
D 1 52 12161565 10714.65 4456 4339 1134.6
D 7 38 3502577 3083.14 4456 4339 1134.6
D 14 35 2481974 2183.64 4456 4339 1134.6

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