ASTROSAT CZTI

Data Quality Report

Orbit 20181225_T03_013T01_9000002598_level2

Creation date: 2018-12-26T14:25:30.426084
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/AS1T03_013T01_9000002598cztM0_level2_bc.evt modeM0/AS1T03_013T01_9000002598cztM0_level2_quad_clean.evt
Size (bytes)702,904,320258,906,240
Size670.3 MB 246.9 MB
Events in quadrant A6,262,9771,660,530
Events in quadrant B4,272,8881,677,184
Events in quadrant C3,656,4101,621,054
Events in quadrant D5,820,6201,601,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0486460
B0407170
C0384040
D0454330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1860811796.335985%
B186093531.896932%
C186093481.870063%
D186095562.987802%

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 20397 18608 40 40 0.20% 0.21%
B 20397 18611 7 7 0.03% 0.04%
C 20397 18610 0 0 0.00% 0.00%
D 20397 18612 82 82 0.40% 0.44%

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 14 237 2536278 12427.94 921 902 204.0
A 15 174 168289 820.5 921 902 204.0
A 13 210 12917 58.9 921 902 204.0
B 10 245 169531 932.19 940 916 180.9
B 4 48 158256 869.86 940 916 180.9
B 4 216 73929 403.65 940 916 180.9
C 3 233 144674 670.29 898 890 214.5
C 5 218 22858 102.41 898 890 214.5
C 8 128 10373 44.21 898 890 214.5
D 13 168 941079 4303.63 921 887 218.5
D 4 239 499835 2283.88 921 887 218.5
D 13 189 371577 1696.79 921 887 218.5

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