ASTROSAT CZTI

Data Quality Report

Orbit 20210314_A10_073T07_9000004254_level2

Creation date: 2021-03-24T22:44:48.416717
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/AS1A10_073T07_9000004254cztM0_level2_bc.evt modeM0/AS1A10_073T07_9000004254cztM0_level2_quad_clean.evt
Size (bytes)8,582,780,1601,696,469,760
Size8.0 GB 1.6 GB
Events in quadrant A27,700,53610,928,337
Events in quadrant B29,484,45311,309,233
Events in quadrant C28,935,52010,879,147
Events in quadrant D165,233,8159,588,268

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025820
B025780
C025740
D025800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02150
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02662900
B02738140
C02761400
D06962670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12667615041.187281%
B12669121821.722301%
C12665146613.680192%
D1263653046324.107150%

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 167044 126920 45 45 0.03% 0.04%
B 167043 126940 47 47 0.03% 0.04%
C 167043 126903 3 3 0.00% 0.00%
D 167043 126616 10126 10126 6.06% 8.00%

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 0 13 917239 620.5 6892 6776 1467.3
A 13 254 235753 156.05 6892 6776 1467.3
A 11 29 59854 36.17 6892 6776 1467.3
B 5 255 1325926 1003.75 7026 6862 1314.1
B 0 190 348902 260.28 7026 6862 1314.1
B 0 229 287026 213.19 7026 6862 1314.1
C 3 233 2096738 1303.97 6764 6751 1602.8
C 14 254 435749 267.66 6764 6751 1602.8
C 2 114 244309 148.22 6764 6751 1602.8
D 8 195 124556135 84911.67 6390 6185 1466.8
D 7 238 5106708 3477.27 6390 6185 1466.8
D 7 69 2679168 1822.3 6390 6185 1466.8

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