ASTROSAT CZTI

Data Quality Report

Orbit 20170718_A03_080T01_9000001392_level2

Creation date: 2017-09-24T11:33:19.923391
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/AS1A03_080T01_9000001392cztM0_level2.evt modeM0/AS1A03_080T01_9000001392cztM0_level2_quad_clean.evt
Size (bytes)785,796,480130,950,720
Size749.4 MB 124.9 MB
Events in quadrant A5,370,753794,903
Events in quadrant B5,705,881811,704
Events in quadrant C5,475,368814,519
Events in quadrant D6,490,683772,678

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228460
B0236870
C0231810
D0266700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11150930.834081%
B111501621.452915%
C111501090.977578%
D111502001.793722%

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 13770 11152 0 0 0.00% 0.00%
B 13770 11152 26 26 0.19% 0.23%
C 13770 11152 17 17 0.12% 0.15%
D 13770 11152 79 79 0.57% 0.71%

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 13 251 15328 50.75 1387 1358 275.3
A 0 226 12866 41.81 1387 1358 275.3
A 12 194 11202 35.76 1387 1358 275.3
B 4 239 146362 560.12 1399 1366 258.9
B 0 214 49853 187.31 1399 1366 258.9
B 0 187 35694 132.61 1399 1366 258.9
C 14 234 123707 391.58 1371 1382 312.4
C 13 61 10359 28.74 1371 1382 312.4
C 14 67 5106 11.92 1371 1382 312.4
D 1 52 562689 1744.59 1347 1317 321.8
D 2 152 344097 1065.27 1347 1317 321.8
D 2 14 139134 428.3 1347 1317 321.8

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