ASTROSAT CZTI

Data Quality Report

Orbit 20170407_G07_086T02_9000001144_level2

Creation date: 2017-09-23T15:52:47.547753
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_086T02_9000001144cztM0_level2.evt modeM0/AS1G07_086T02_9000001144cztM0_level2_quad_clean.evt
Size (bytes)2,141,055,360264,738,240
Size2.0 GB 252.5 MB
Events in quadrant A33,191,8551,109,396
Events in quadrant B10,896,8171,866,341
Events in quadrant C9,635,0741,816,912
Events in quadrant D9,686,5791,761,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01133050
B0463370
C0439220
D0445120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A212251077550.765607%
B212254982.346290%
C212242201.036562%
D212262481.168378%

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 28525 21229 9195 9195 32.23% 43.31%
B 28525 21232 55 55 0.19% 0.26%
C 28525 21234 3 3 0.01% 0.01%
D 28525 21233 15 15 0.05% 0.07%

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 0 128 26787408 80587.25 1633 1599 332.4
A 13 248 59549 174.35 1633 1599 332.4
A 15 234 57297 167.57 1633 1599 332.4
B 10 16 421852 849.65 2568 2504 493.6
B 11 51 226140 453.11 2568 2504 493.6
B 0 214 159574 318.24 2568 2504 493.6
C 13 61 19050 28.97 2465 2471 572.2
C 9 54 13356 19.02 2465 2471 572.2
C 5 128 8138 9.9 2465 2471 572.2
D 12 233 120300 180.58 2448 2396 652.9
D 1 52 102630 153.52 2448 2396 652.9
D 2 234 72489 107.35 2448 2396 652.9

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