ASTROSAT CZTI

Data Quality Report

Orbit 20210210_C05_019T04_9000004162_level2

Creation date: 2021-02-13T09:42:25.192362
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/AS1C05_019T04_9000004162cztM0_level2_bc.evt modeM0/AS1C05_019T04_9000004162cztM0_level2_quad_clean.evt
Size (bytes)3,934,563,8401,665,619,200
Size3.7 GB 1.6 GB
Events in quadrant A21,421,15510,998,500
Events in quadrant B23,436,85411,224,199
Events in quadrant C22,173,12510,891,496
Events in quadrant D45,185,35910,351,120

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020780
B020780
C020780
D020780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02119870
B02186570
C02157640
D02938440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10198110831.061963%
B10198116731.640502%
C10198118991.862112%
D10198151965.095067%

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 114901 101969 0 0 0.00% 0.00%
B 114900 101963 40 40 0.03% 0.04%
C 114900 101966 3 3 0.00% 0.00%
D 114901 101961 608 608 0.53% 0.60%

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 6 16 239830 199.53 5419 5329 1175.3
A 13 254 168569 138.89 5419 5329 1175.3
A 15 174 118009 95.87 5419 5329 1175.3
B 10 246 892649 857.1 5488 5373 1035.2
B 10 245 727504 697.57 5488 5373 1035.2
B 5 185 172221 161.17 5488 5373 1035.2
C 3 233 1365246 1080.24 5296 5283 1258.9
C 2 16 211110 163.49 5296 5283 1258.9
C 2 114 199582 154.33 5296 5283 1258.9
D 1 52 13202028 10835.63 5267 5099 1217.9
D 8 195 9222754 7568.36 5267 5099 1217.9
D 2 250 999720 816.66 5267 5099 1217.9

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