ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_889T01_9000000158_level2

Creation date: 2016-09-06T17:58:04.561210
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/AS1P01_889T01_9000000158cztM0_level2_bc.evt modeM0/AS1P01_889T01_9000000158cztM0_level2_quad_clean.evt
Size (bytes)84,000,96033,393,600
Size80.1 MB 31.8 MB
Events in quadrant A379,614220,911
Events in quadrant B1,087,739201,868
Events in quadrant C422,878222,407
Events in quadrant D506,217217,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078000
B0120950
C074500
D074690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204600.000000%
B204634216.715543%
C204610.048876%
D204640.195503%

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 2045 2045 0 0 0.00% 0.00%
B 2045 2045 1 1 0.05% 0.05%
C 2045 2045 0 0 0.00% 0.00%
D 2045 2045 0 0 0.00% 0.00%

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 3 80 3215 140.4 97 95 22.2
A 14 170 1923 82.26 97 95 22.2
A 14 79 597 22.59 97 95 22.2
B 3 0 514641 28162.49 91 89 18.3
B 8 38 153625 8403.34 91 89 18.3
B 4 222 22198 1210.07 91 89 18.3
C 2 53 14853 665.88 97 96 22.2
C 3 79 6574 292.31 97 96 22.2
C 3 111 5679 251.92 97 96 22.2
D 13 170 78869 3444.73 96 94 22.9
D 1 4 24676 1074.94 96 94 22.9
D 13 13 7617 328.97 96 94 22.9

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