ASTROSAT CZTI

Data Quality Report

Orbit 20170727_G07_046T01_9000001408_level2

Creation date: 2017-09-24T12:19:32.008324
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_9000001408cztM0_level2.evt modeM0/AS1G07_046T01_9000001408cztM0_level2_quad_clean.evt
Size (bytes)2,800,146,240519,811,200
Size2.6 GB 495.7 MB
Events in quadrant A20,053,1683,235,016
Events in quadrant B20,232,4193,332,518
Events in quadrant C19,053,2863,263,840
Events in quadrant D22,657,3153,061,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08560
B08480
C08520
D08500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0877080
B0876210
C0854650
D0938570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0920
C0890
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A415564271.027529%
B415174221.016451%
C414762240.540071%
D415047051.698631%

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 52028 42221 68 68 0.13% 0.16%
B 52028 42232 53 53 0.10% 0.13%
C 52028 42213 2 2 0.00% 0.00%
D 52028 42188 448 448 0.86% 1.06%

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 499350 497.59 4978 4880 993.7
A 14 111 267552 264.33 4978 4880 993.7
A 8 15 147464 143.48 4978 4880 993.7
B 4 81 479104 503.45 5012 4894 941.9
B 0 85 137605 140.89 5012 4894 941.9
B 12 111 112323 114.05 5012 4894 941.9
C 9 221 53923 43.68 4866 4905 1122.3
C 13 61 35658 27.4 4866 4905 1122.3
C 10 22 24523 17.48 4866 4905 1122.3
D 8 195 1675790 1354.02 4762 4662 1234.2
D 1 52 1435030 1158.95 4762 4662 1234.2
D 2 16 844375 680.37 4762 4662 1234.2

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