ASTROSAT CZTI

Data Quality Report

Orbit 20190129_A06_003T04_9000002682_level2

Creation date: 2019-01-31T15:40:32.991575
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/AS1A06_003T04_9000002682cztM0_level2_bc.evt modeM0/AS1A06_003T04_9000002682cztM0_level2_quad_clean.evt
Size (bytes)4,677,799,6801,686,058,560
Size4.4 GB 1.6 GB
Events in quadrant A29,473,64810,796,527
Events in quadrant B28,558,01411,096,308
Events in quadrant C26,397,02010,449,172
Events in quadrant D48,673,24210,112,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025620
B025620
C025620
D025620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02889450
B02686350
C02637900
D03339620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12569089407.112738%
B12569017301.376402%
C12569019611.560188%
D12569071465.685417%

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 146040 125688 34 34 0.02% 0.03%
B 146039 125689 60 60 0.04% 0.05%
C 146039 125693 46 46 0.03% 0.04%
D 146039 125688 2646 2646 1.81% 2.11%

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 14 111 2225876 1542.68 6648 6525 1438.6
A 15 174 1451262 1004.24 6648 6525 1438.6
A 4 2 269662 182.91 6648 6525 1438.6
B 3 64 1169849 899.39 6793 6612 1293.4
B 0 197 299968 226.82 6793 6612 1293.4
B 7 220 202093 151.14 6793 6612 1293.4
C 3 233 435775 287.73 6416 6390 1492.3
C 9 160 389609 256.8 6416 6390 1492.3
C 0 207 351247 231.09 6416 6390 1492.3
D 7 238 9519865 6344.1 6537 6324 1499.6
D 5 222 4796367 3194.24 6537 6324 1499.6
D 11 176 4650462 3096.94 6537 6324 1499.6

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