ASTROSAT CZTI

Data Quality Report

Orbit 20170519_G07_046T01_9000001236_level2

Creation date: 2017-09-23T23:45:12.074403
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_046T01_9000001236cztM0_level2.evt modeM0/AS1G07_046T01_9000001236cztM0_level2_quad_clean.evt
Size (bytes)3,155,512,320486,745,920
Size2.9 GB 464.2 MB
Events in quadrant A21,746,6173,096,468
Events in quadrant B29,249,7442,975,251
Events in quadrant C21,035,6633,068,371
Events in quadrant D20,972,3752,991,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0892610
B01117770
C0867490
D0863120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07820
B07820
C07820
D07820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A380048302.183981%
B38007390110.263899%
C380056061.594527%
D380067291.918118%

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 45666 38013 119 119 0.26% 0.31%
B 45666 38013 2900 2900 6.35% 7.63%
C 45666 38014 149 149 0.33% 0.39%
D 45666 38012 241 241 0.53% 0.63%

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 2784839 2859.67 4815 4720 972.2
A 15 174 287100 290.46 4815 4720 972.2
A 5 16 103084 101.18 4815 4720 972.2
B 7 202 9341325 10647.96 4645 4538 876.9
B 4 48 1094046 1242.51 4645 4538 876.9
B 10 16 492998 557.05 4645 4538 876.9
C 9 68 2623055 2431.11 4683 4717 1077.0
C 14 234 77644 67.71 4683 4717 1077.0
C 1 3 56898 48.45 4683 4717 1077.0
D 8 195 1658409 1463.48 4669 4571 1130.1
D 7 71 633943 556.93 4669 4571 1130.1
D 1 52 532501 467.16 4669 4571 1130.1

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