ASTROSAT CZTI

Data Quality Report

Orbit 20160718_G05_252T01_9000000544_level2

Creation date: 2017-10-17T18:35:10.559539
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/AS1G05_252T01_9000000544cztM0_level2.evt modeM0/AS1G05_252T01_9000000544cztM0_level2_quad_clean.evt
Size (bytes)6,070,314,240974,926,080
Size5.7 GB 929.8 MB
Events in quadrant A54,483,4486,001,253
Events in quadrant B38,819,9266,192,183
Events in quadrant C41,427,0736,005,783
Events in quadrant D43,699,7605,825,341

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016380
B016380
C016380
D016380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02164230
B01682590
C01782440
D01869460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8027340895.093867%
B802718921.111236%
C8026912451.551035%
D8027419292.403020%

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 92563 80281 2804 2804 3.03% 3.49%
B 92563 80280 175 175 0.19% 0.22%
C 92563 80285 642 642 0.69% 0.80%
D 92563 80286 1166 1166 1.26% 1.45%

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 13 251 17355449 9148.08 9377 9199 1896.2
A 15 234 343812 176.47 9377 9199 1896.2
A 0 50 282727 144.25 9377 9199 1896.2
B 14 167 918768 499.53 9586 9361 1820.5
B 15 204 279830 148.57 9586 9361 1820.5
B 4 48 195186 102.07 9586 9361 1820.5
C 9 247 3024561 1422.74 9129 9156 2119.4
C 14 48 2128962 1000.18 9129 9156 2119.4
C 9 16 262303 119.44 9129 9156 2119.4
D 2 136 1818926 833.17 9096 8853 2172.5
D 2 63 1658157 759.17 9096 8853 2172.5
D 4 95 1272775 581.78 9096 8853 2172.5

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