ASTROSAT CZTI

Data Quality Report

Orbit 20171210_A04_088T05_9000001764_level2

Creation date: 2018-01-05T17:13:22.263571
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/AS1A04_088T05_9000001764cztM0_level2_bc.evt modeM0/AS1A04_088T05_9000001764cztM0_level2_quad_clean.evt
Size (bytes)4,829,924,1601,510,139,520
Size4.5 GB 1.4 GB
Events in quadrant A31,236,1089,466,117
Events in quadrant B38,331,6029,295,132
Events in quadrant C23,624,3439,674,786
Events in quadrant D44,832,0528,999,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01850
B01850
C01850
D01850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024680
B024680
C024680
D024680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02803050
B03081480
C02485650
D03269510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12115635302.913599%
B12115664955.360857%
C12115611240.927730%
D12115677326.381855%

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 139805 121146 147 147 0.11% 0.12%
B 139805 121138 55 55 0.04% 0.05%
C 139805 121148 13 13 0.01% 0.01%
D 139805 121137 931 931 0.67% 0.77%

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 8 15 2986218 2277.99 6005 5893 1308.3
A 14 63 2758044 2103.59 6005 5893 1308.3
A 1 162 1119177 850.93 6005 5893 1308.3
B 4 239 9878240 8734.1 5969 5801 1130.3
B 15 204 1790352 1578.78 5969 5801 1130.3
B 10 252 502927 439.81 5969 5801 1130.3
C 0 207 59110 39.92 6003 5913 1332.7
C 12 4 51989 34.57 6003 5913 1332.7
C 14 234 42730 27.63 6003 5913 1332.7
D 1 52 10961490 7989.61 5866 5648 1371.3
D 8 195 5114498 3725.66 5866 5648 1371.3
D 10 199 1157506 840.0 5866 5648 1371.3

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