ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_889T01_9000000134_level2

Creation date: 2016-09-06T17:58:21.544768
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_9000000134cztM0_level2_bc.evt modeM0/AS1P01_889T01_9000000134cztM0_level2_quad_clean.evt
Size (bytes)66,683,52030,602,880
Size63.6 MB 29.2 MB
Events in quadrant A335,795197,275
Events in quadrant B685,886193,731
Events in quadrant C407,599194,853
Events in quadrant D442,883192,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080520
B094240
C076980
D073900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204200.000000%
B2042331.616063%
C204200.000000%
D204200.000000%

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 2042 2042 0 0 0.00% 0.00%
B 2041 2041 15 15 0.73% 0.73%
C 2042 2042 0 0 0.00% 0.00%
D 2042 2042 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 10 133 1076 47.51 86 85 20.9
A 15 17 646 26.9 86 85 20.9
A 14 79 315 11.03 86 85 20.9
B 8 38 299657 16421.58 87 85 18.2
B 0 220 36928 2019.62 87 85 18.2
B 7 221 2798 148.72 87 85 18.2
C 1 192 51858 2554.8 85 83 20.3
C 3 79 8967 438.37 85 83 20.3
C 3 111 6651 324.09 85 83 20.3
D 1 4 56823 2687.45 85 82 21.1
D 13 169 30730 1451.59 85 82 21.1
D 13 170 4993 232.6 85 82 21.1

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