ASTROSAT CZTI

Data Quality Report

Orbit 20160602_G05_152T04_9000000480_level2

Creation date: 2018-05-17T08:49:20.167090
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/AS1G05_152T04_9000000480cztM0_level2.evt modeM0/AS1G05_152T04_9000000480cztM0_level2_quad_clean.evt
Size (bytes)1,925,697,600327,761,280
Size1.8 GB 312.6 MB
Events in quadrant A15,686,3782,051,724
Events in quadrant B15,360,3272,098,883
Events in quadrant C13,091,5862,027,623
Events in quadrant D12,476,6262,010,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05120
C05120
D05120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630470
B0633260
C0564110
D0550530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2527411654.609480%
B252743931.554958%
C252748343.299834%
D252743451.365039%

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 29740 25277 679 679 2.28% 2.69%
B 29740 25277 42 42 0.14% 0.17%
C 29740 25278 522 522 1.76% 2.07%
D 29740 25278 117 117 0.39% 0.46%

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 13 251 3088120 5099.52 2986 2920 605.0
A 13 164 426395 699.96 2986 2920 605.0
A 0 50 286804 469.23 2986 2920 605.0
B 14 167 1225521 2100.53 3052 2978 582.0
B 15 204 960167 1644.61 3052 2978 582.0
B 3 0 584028 998.34 3052 2978 582.0
C 2 53 1667209 2494.48 2881 2892 667.2
C 9 144 67191 96.37 2881 2892 667.2
C 14 234 66458 95.27 2881 2892 667.2
D 2 37 392399 553.1 2929 2844 704.3
D 5 233 275659 387.35 2929 2844 704.3
D 1 20 174274 243.4 2929 2844 704.3

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