ASTROSAT CZTI

Data Quality Report

Orbit 20170601_G07_070T02_9000001262_level2

Creation date: 2017-09-24T02:05:33.393996
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/AS1G07_070T02_9000001262cztM0_level2.evt modeM0/AS1G07_070T02_9000001262cztM0_level2_quad_clean.evt
Size (bytes)2,468,718,720424,183,680
Size2.3 GB 404.5 MB
Events in quadrant A20,302,8462,600,821
Events in quadrant B16,985,8862,646,961
Events in quadrant C15,871,7512,627,548
Events in quadrant D19,216,1862,541,954

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07220
B07220
C07220
D07200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840290
B0747840
C0725260
D0819310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A353855871.658895%
B353834941.396151%
C353852660.751731%
D353888692.455635%

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 39995 35403 28 28 0.07% 0.08%
B 39995 35401 90 90 0.23% 0.25%
C 39995 35403 14 14 0.04% 0.04%
D 39995 35402 474 474 1.19% 1.34%

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 5 4226214 5087.84 4110 4018 829.9
A 1 162 83887 96.24 4110 4018 829.9
A 5 16 71422 81.22 4110 4018 829.9
B 10 16 671856 849.08 4146 4042 786.5
B 12 111 87907 106.63 4146 4042 786.5
B 11 111 71041 85.18 4146 4042 786.5
C 14 234 83599 85.59 4032 4052 929.3
C 13 61 30312 28.26 4032 4052 929.3
C 9 68 26765 24.44 4032 4052 929.3
D 2 14 1530537 1493.26 3982 3877 1022.4
D 1 52 1207271 1177.06 3982 3877 1022.4
D 8 195 400659 388.1 3982 3877 1022.4

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