ASTROSAT CZTI

Data Quality Report

Orbit 20170824_A03_124T01_9000001486_level2

Creation date: 2017-10-30T10:19:40.643664
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/AS1A03_124T01_9000001486cztM0_level2.evt modeM0/AS1A03_124T01_9000001486cztM0_level2_quad_clean.evt
Size (bytes)7,600,800,9601,390,429,440
Size7.1 GB 1.3 GB
Events in quadrant A53,973,9158,884,790
Events in quadrant B58,761,1078,786,251
Events in quadrant C49,954,9978,731,129
Events in quadrant D60,518,9208,618,235

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06490
B06070
C06490
D06480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02070
C02070
D02070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02286910
B02432180
C02226280
D02524400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10793213031.207242%
B10631125032.354413%
C1081708570.792271%
D11167614711.317203%

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 135202 112708 97 97 0.07% 0.09%
B 135201 111245 891 891 0.66% 0.80%
C 135202 112768 88 88 0.07% 0.08%
D 135202 113247 606 606 0.45% 0.54%

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 1900998 726.57 13064 12812 2598.8
A 8 5 1229008 467.99 13064 12812 2598.8
A 3 1 266366 97.57 13064 12812 2598.8
B 4 239 7181389 2994.64 12819 12536 2393.9
B 11 51 794316 326.57 12819 12536 2393.9
B 0 214 563153 230.01 12819 12536 2393.9
C 4 254 405862 135.99 12647 12713 2891.0
C 14 234 175082 56.16 12647 12713 2891.0
C 13 61 95012 28.47 12647 12713 2891.0
D 8 195 4624596 1498.63 12985 12657 3077.4
D 1 52 2146366 693.34 12985 12657 3077.4
D 2 14 797982 255.19 12985 12657 3077.4

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