ASTROSAT CZTI

Data Quality Report

Orbit 20170924_G07_032T01_9000001554_level2

Creation date: 2017-10-18T16:14:24.002064
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_032T01_9000001554cztM0_level2.evt modeM0/AS1G07_032T01_9000001554cztM0_level2_quad_clean.evt
Size (bytes)595,702,08080,458,560
Size568.1 MB 76.7 MB
Events in quadrant A4,717,132485,160
Events in quadrant B5,002,094502,951
Events in quadrant C3,255,203505,506
Events in quadrant D4,611,476474,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186700
B0193880
C0145120
D0181510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B0980
C01140
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0180
C0200
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67502603.851852%
B68326599.645785%
C6888640.929152%
D68101922.819383%

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 9423 7182 95 95 1.01% 1.32%
B 9424 7261 220 220 2.33% 3.03%
C 9424 7281 7 7 0.07% 0.10%
D 9424 7224 93 93 0.99% 1.29%

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 15 239 1330616 7885.39 829 811 168.6
A 15 223 144753 853.54 829 811 168.6
A 1 162 10505 57.48 829 811 168.6
B 0 85 1032158 6446.68 830 810 160.0
B 4 239 630605 3936.68 830 810 160.0
B 4 81 38072 232.91 830 810 160.0
C 14 234 26115 131.02 827 832 193.0
C 13 61 6191 27.77 827 832 193.0
C 5 207 3150 12.01 827 832 193.0
D 1 52 417785 2130.49 807 785 195.7
D 13 104 376477 1919.45 807 785 195.7
D 13 249 280715 1430.19 807 785 195.7

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