ASTROSAT CZTI

Data Quality Report

Orbit 20151128_P01_161T02_9000000184_level2

Creation date: 2017-10-26T18:57:57.452235
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_161T02_9000000184cztM0_level2.evt modeM0/AS1P01_161T02_9000000184cztM0_level2_quad_clean.evt
Size (bytes)7,485,004,800580,420,800
Size7.0 GB 553.5 MB
Events in quadrant A53,512,1463,697,223
Events in quadrant B58,015,6323,733,300
Events in quadrant C53,652,8843,670,481
Events in quadrant D58,594,7753,441,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08940
B08940
C08940
D08940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01905360
B02037620
C01907600
D02058950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A442467511.697329%
B442466121.383176%
C442472660.601171%
D4424725005.650101%

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 55039 44253 2256 2256 4.10% 5.10%
B 55039 44253 3238 3238 5.88% 7.32%
C 55039 44254 1803 1803 3.28% 4.07%
D 55039 44254 5544 5544 10.07% 12.53%

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 15 233 1586412 493.6 13373 13465 3186.7
A 15 127 616823 189.34 13373 13465 3186.7
A 11 79 53053 12.42 13373 13465 3186.7
B 3 0 2893571 879.49 14061 14105 3274.0
B 7 221 340387 99.66 14061 14105 3274.0
B 5 249 253080 72.99 14061 14105 3274.0
C 15 241 1617184 447.85 12922 13366 3581.1
C 9 83 801103 219.97 12922 13366 3581.1
C 3 111 183504 47.51 12922 13366 3581.1
D 12 188 10114655 2694.03 12228 12686 3749.8
D 1 4 1510415 399.42 12228 12686 3749.8
D 13 73 344322 88.44 12228 12686 3749.8

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