ASTROSAT CZTI

Data Quality Report

Orbit 20160327_T01_113T01_9000000400_level2

Creation date: 2017-10-27T03:56:42.895891
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/AS1T01_113T01_9000000400cztM0_level2.evt modeM0/AS1T01_113T01_9000000400cztM0_level2_quad_clean.evt
Size (bytes)6,504,546,2401,296,774,720
Size6.1 GB 1.2 GB
Events in quadrant A44,997,1768,210,823
Events in quadrant B50,367,1218,315,975
Events in quadrant C45,043,5428,133,458
Events in quadrant D49,812,8347,747,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020380
B020380
C020380
D020380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02057220
B02192300
C02057430
D02212930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01590
B01590
C01590
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10026610991.096084%
B10026618631.858058%
C1002667290.727066%
D10026614701.466100%

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 116031 100277 2 2 0.00% 0.00%
B 116031 100279 527 527 0.45% 0.53%
C 116031 100282 14 14 0.01% 0.01%
D 116031 100282 618 618 0.53% 0.62%

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 12 194 128563 49.7 11662 11402 2357.2
A 0 226 122986 47.34 11662 11402 2357.2
A 12 133 92475 34.39 11662 11402 2357.2
B 14 167 2331924 1041.49 11822 11517 2228.0
B 14 53 1971479 879.71 11822 11517 2228.0
B 7 205 320534 138.7 11822 11517 2228.0
C 14 223 121335 41.82 11400 11460 2627.2
C 13 61 101958 34.45 11400 11460 2627.2
C 2 53 96932 32.53 11400 11460 2627.2
D 2 184 2994340 1124.34 11210 10942 2653.5
D 7 67 917385 341.61 11210 10942 2653.5
D 2 136 901739 335.71 11210 10942 2653.5

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