ASTROSAT CZTI

Data Quality Report

Orbit 20161203_C02_011T01_9000000850_level2

Creation date: 2017-09-19T08:59:35.124507
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/AS1C02_011T01_9000000850cztM0_level2.evt modeM0/AS1C02_011T01_9000000850cztM0_level2_quad_clean.evt
Size (bytes)8,024,414,4001,333,958,400
Size7.5 GB 1.2 GB
Events in quadrant A55,979,5368,284,088
Events in quadrant B56,247,5768,403,524
Events in quadrant C52,812,2378,382,061
Events in quadrant D70,537,9797,768,665

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022480
B022480
C022480
D022480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02388200
B02387520
C02330980
D02832490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01450
B01450
C01450
D01450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11036420191.829401%
B11036424232.195462%
C11036410780.976768%
D11036464975.886883%

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 124021 110387 275 275 0.22% 0.25%
B 124021 110387 365 365 0.29% 0.33%
C 124021 110387 245 245 0.20% 0.22%
D 124021 110387 5174 5174 4.17% 4.69%

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 13 251 2005509 741.8 13305 13020 2686.0
A 8 15 1282515 472.63 13305 13020 2686.0
A 15 236 929692 341.28 13305 13020 2686.0
B 0 228 1331224 514.6 13413 13111 2561.4
B 4 81 1145102 441.94 13413 13111 2561.4
B 15 204 484254 183.94 13413 13111 2561.4
C 8 208 1637464 544.15 12953 13042 2985.3
C 9 16 369664 119.46 12953 13042 2985.3
C 1 16 178030 55.27 12953 13042 2985.3
D 13 105 10115849 3230.79 12746 12348 3127.2
D 4 95 4468498 1424.94 12746 12348 3127.2
D 2 152 2389077 760.01 12746 12348 3127.2

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