ASTROSAT CZTI

Data Quality Report

Orbit 20190429_A05_208T03_9000002874_level2

Creation date: 2019-05-01T13:07:55.031953
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/AS1A05_208T03_9000002874cztM0_level2_bc.evt modeM0/AS1A05_208T03_9000002874cztM0_level2_quad_clean.evt
Size (bytes)3,325,412,160761,014,080
Size3.1 GB 725.8 MB
Events in quadrant A12,473,2215,256,646
Events in quadrant B12,460,8765,285,662
Events in quadrant C11,814,9875,033,454
Events in quadrant D60,077,4373,562,055

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01198390
B01196290
C01190170
D03470730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011600
B011600
C011600
D011600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568875771.014291%
B568876211.091638%
C568878021.409812%
D568873222856.652662%

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 67677 56884 17 17 0.03% 0.03%
B 67677 56877 0 0 0.00% 0.00%
C 67677 56878 0 0 0.00% 0.00%
D 67676 56877 487 487 0.72% 0.86%

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 5 16 182309 265.77 3155 3103 674.3
A 12 96 88219 126.23 3155 3103 674.3
A 13 254 73463 104.34 3155 3103 674.3
B 0 198 100478 167.11 3159 3091 582.8
B 0 230 59158 96.21 3159 3091 582.8
B 0 229 58074 94.35 3159 3091 582.8
C 3 233 135931 188.77 3010 2998 704.2
C 7 247 33559 43.4 3010 2998 704.2
C 13 61 17501 20.6 3010 2998 704.2
D 10 66 35058268 62764.89 2359 2279 558.5
D 7 238 10916182 19540.45 2359 2279 558.5
D 1 52 4076450 7294.47 2359 2279 558.5

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