ASTROSAT CZTI

Data Quality Report

Orbit 20180520_A04_231T01_9000002106_level2

Creation date: 2018-05-22T10:33:08.477716
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/AS1A04_231T01_9000002106cztM0_level2_bc.evt modeM0/AS1A04_231T01_9000002106cztM0_level2_quad_clean.evt
Size (bytes)2,490,696,000801,512,640
Size2.3 GB 764.4 MB
Events in quadrant A13,232,3895,180,515
Events in quadrant B15,558,0345,174,764
Events in quadrant C15,954,5865,105,880
Events in quadrant D26,723,8324,823,506

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011900
B011900
C011900
D011900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220680
B01332500
C01308480
D01737020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581824710.809529%
B5818212472.143275%
C581823310.568904%
D5818241767.177478%

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 66988 58186 7 7 0.01% 0.01%
B 66988 58183 83 83 0.12% 0.14%
C 66988 58187 4 4 0.01% 0.01%
D 66988 58183 574 574 0.86% 0.99%

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 12 189 809308 1216.5 3036 2979 662.8
A 8 15 491184 736.55 3036 2979 662.8
A 0 23 152507 225.59 3036 2979 662.8
B 0 229 1731210 3033.26 3020 2945 569.8
B 10 245 901805 1577.58 3020 2945 569.8
B 0 182 248289 430.6 3020 2945 569.8
C 3 233 4384548 6826.39 2939 2912 641.9
C 14 234 18820 24.78 2939 2912 641.9
C 13 61 17438 22.63 2939 2912 641.9
D 13 122 8076639 11957.92 2902 2820 675.2
D 5 222 2855931 4225.67 2902 2820 675.2
D 12 110 1804148 2667.9 2902 2820 675.2

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