ASTROSAT CZTI

Data Quality Report

Orbit 20181024_A05_064T01_9000002450_level2

Creation date: 2018-10-26T11:05:07.136106
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_064T01_9000002450cztM0_level2_bc.evt modeM0/AS1A05_064T01_9000002450cztM0_level2_quad_clean.evt
Size (bytes)4,290,108,4801,833,935,040
Size4.0 GB 1.7 GB
Events in quadrant A24,644,29712,431,806
Events in quadrant B24,066,35412,629,772
Events in quadrant C34,939,82112,142,419
Events in quadrant D39,764,94411,787,620

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01730
B01730
C01730
D01730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019540
B019540
C019540
D019540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02175850
B02145150
C02553520
D02656900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9569529273.058676%
B9569515581.628089%
C9569550955.324207%
D9569554335.677413%

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 113116 95699 248 248 0.22% 0.26%
B 113116 95697 32 32 0.03% 0.03%
C 113116 95698 5 5 0.00% 0.01%
D 113116 95697 882 882 0.78% 0.92%

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 15 174 4853426 4517.63 4999 4916 1073.2
A 9 143 311049 285.24 4999 4916 1073.2
A 13 248 84216 73.89 4999 4916 1073.2
B 15 35 1028217 1069.88 5072 4951 956.4
B 0 189 705624 732.59 5072 4951 956.4
B 0 198 466278 482.34 5072 4951 956.4
C 3 233 15256947 13337.45 4868 4849 1143.6
C 7 247 784197 681.51 4868 4849 1143.6
C 0 207 146108 123.53 4868 4849 1143.6
D 1 52 17961654 15641.93 4924 4762 1148.0
D 10 70 983650 852.69 4924 4762 1148.0
D 5 222 686561 593.9 4924 4762 1148.0

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