ASTROSAT CZTI

Data Quality Report

Orbit 20160122_G02_048T01_9000000286_level2

Creation date: 2017-10-31T12:05:48.121808
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/AS1G02_048T01_9000000286cztM0_level2.evt modeM0/AS1G02_048T01_9000000286cztM0_level2_quad_clean.evt
Size (bytes)9,054,239,040613,497,600
Size8.4 GB 585.1 MB
Events in quadrant A69,335,1543,679,477
Events in quadrant B69,593,7223,746,423
Events in quadrant C65,231,3923,716,991
Events in quadrant D66,348,1913,581,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B060
C060
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02457540
B02465970
C02337680
D02370610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011280
B011280
C011280
D011280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562401980.352063%
B562341740.309421%
C562381950.346741%
D562404310.766358%

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 63478 56251 2153 2153 3.39% 3.83%
B 63478 56248 2053 2053 3.23% 3.65%
C 63478 56248 1474 1474 2.32% 2.62%
D 63478 56251 1987 1987 3.13% 3.53%

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 0 231 2016825 475.45 17490 17627 4204.8
A 0 128 267013 59.31 17490 17627 4204.8
A 15 236 179428 38.48 17490 17627 4204.8
B 8 3 348049 77.43 18223 18373 4257.9
B 0 220 144161 29.54 18223 18373 4257.9
B 0 182 91087 17.08 18223 18373 4257.9
C 8 229 196727 38.68 16612 17217 4641.0
C 10 34 98447 17.5 16612 17217 4641.0
C 2 53 76790 12.84 16612 17217 4641.0
D 7 85 4364804 869.73 16059 16695 4999.4
D 7 34 833064 163.29 16059 16695 4999.4
D 2 54 394649 75.6 16059 16695 4999.4

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