ASTROSAT CZTI

Data Quality Report

Orbit 20170329_A02_178T01_9000001118_level2

Creation date: 2017-09-23T13:36:11.445411
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/AS1A02_178T01_9000001118cztM0_level2.evt modeM0/AS1A02_178T01_9000001118cztM0_level2_quad_clean.evt
Size (bytes)5,811,301,440924,733,440
Size5.4 GB 881.9 MB
Events in quadrant A61,305,6095,234,121
Events in quadrant B36,520,3496,062,392
Events in quadrant C34,561,6585,929,090
Events in quadrant D38,567,3945,655,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015260
B015260
C015260
D015260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02334760
B01582840
C01543790
D01675890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A747261190015.924845%
B7473211211.500027%
C747327160.958090%
D7473016342.186538%

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 86186 74752 10347 10347 12.01% 13.84%
B 86186 74752 141 141 0.16% 0.19%
C 86186 74752 1 1 0.00% 0.00%
D 86186 74751 761 761 0.88% 1.02%

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 13 170 29790423 18230.73 8123 7960 1633.6
A 8 15 175650 102.65 8123 7960 1633.6
A 0 226 75731 41.48 8123 7960 1633.6
B 10 16 811781 473.2 8999 8768 1697.0
B 0 214 503521 291.55 8999 8768 1697.0
B 12 111 186306 104.62 8999 8768 1697.0
C 1 16 416395 202.73 8748 8786 2010.6
C 13 61 66226 28.57 8748 8786 2010.6
C 8 222 37337 14.2 8748 8786 2010.6
D 1 52 1880019 823.23 8588 8400 2273.5
D 12 221 1436557 628.17 8588 8400 2273.5
D 13 122 1183183 516.72 8588 8400 2273.5

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