ASTROSAT CZTI

Data Quality Report

Orbit 20160316_T01_034T01_9000000378_level2

Creation date: 2016-09-06T17:52:15.911618
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_034T01_9000000378cztM0_level2_bc.evt modeM0/AS1T01_034T01_9000000378cztM0_level2_quad_clean.evt
Size (bytes)1,696,968,000706,711,680
Size1.6 GB 674.0 MB
Events in quadrant A8,654,0284,591,676
Events in quadrant B8,733,2564,682,999
Events in quadrant C8,822,6044,725,749
Events in quadrant D22,082,5044,286,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0932080
B0931420
C0928070
D01441650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09260
B09260
C09260
D09260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A454383590.790088%
B454383140.691052%
C454381790.393943%
D4543843289.525067%

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 53543 45438 0 0 0.00% 0.00%
B 53543 45439 2 2 0.00% 0.00%
C 53543 45442 1 1 0.00% 0.00%
D 53543 45437 512 512 0.96% 1.13%

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 295041 634.2 2093 2042 462.0
A 14 238 241141 517.53 2093 2042 462.0
A 12 133 36474 74.53 2093 2042 462.0
B 10 244 105752 268.27 2137 2075 386.5
B 15 85 89917 227.29 2137 2075 386.5
B 7 205 81666 205.94 2137 2075 386.5
C 14 223 105432 222.71 2104 2071 464.1
C 12 4 94435 199.01 2104 2071 464.1
C 5 250 75973 159.24 2104 2071 464.1
D 11 130 6484625 14116.58 1973 1915 459.2
D 11 131 4942905 10759.37 1973 1915 459.2
D 2 136 1044017 2269.25 1973 1915 459.2

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