ASTROSAT CZTI

Data Quality Report

Orbit 20170126_G06_083T01_9000000984_level2

Creation date: 2017-09-22T23:17:03.941988
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/AS1G06_083T01_9000000984cztM0_level2.evt modeM0/AS1G06_083T01_9000000984cztM0_level2_quad_clean.evt
Size (bytes)4,915,284,4801,038,856,320
Size4.6 GB 990.7 MB
Events in quadrant A32,683,9316,779,583
Events in quadrant B36,137,4516,933,214
Events in quadrant C31,847,5716,745,179
Events in quadrant D43,589,5036,331,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013820
B013820
C013820
D013820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01445530
B01530840
C01429320
D01753950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6823211921.746981%
B6823218682.737718%
C682329051.326357%
D6823225743.772423%

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 78027 68237 135 135 0.17% 0.20%
B 78027 68238 505 505 0.65% 0.74%
C 78027 68237 181 181 0.23% 0.27%
D 78027 68236 1368 1368 1.75% 2.00%

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 8 15 1377631 858.51 7985 7832 1595.5
A 13 248 223899 135.42 7985 7832 1595.5
A 14 14 121101 70.99 7985 7832 1595.5
B 0 228 1183058 789.5 8017 7826 1488.6
B 0 214 1103786 736.25 8017 7826 1488.6
B 10 16 997975 665.16 8017 7826 1488.6
C 9 243 999583 553.28 7797 7822 1792.5
C 9 68 354632 193.48 7797 7822 1792.5
C 13 61 60191 29.22 7797 7822 1792.5
D 2 216 5087558 2710.68 7718 7487 1874.1
D 8 195 3736477 1989.76 7718 7487 1874.1
D 2 63 1887493 1003.15 7718 7487 1874.1

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