ASTROSAT CZTI

Data Quality Report

Orbit 20171127_G08_075T01_9000001726_level2

Creation date: 2017-11-28T17:25:16.963367
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/AS1G08_075T01_9000001726cztM0_level2_bc.evt modeM0/AS1G08_075T01_9000001726cztM0_level2_quad_clean.evt
Size (bytes)1,764,835,200556,873,920
Size1.6 GB 531.1 MB
Events in quadrant A15,277,2803,475,293
Events in quadrant B12,647,5043,493,285
Events in quadrant C8,625,0603,473,307
Events in quadrant D13,809,1363,314,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01167640
B01077850
C0927560
D01073420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09240
B09240
C09240
D09240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4530710052.218200%
B4530716123.557949%
C453072750.606970%
D4530710812.385945%

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 49848 45310 16 16 0.03% 0.04%
B 49848 45310 22 22 0.04% 0.05%
C 49848 45311 0 0 0.00% 0.00%
D 49848 45311 144 144 0.29% 0.32%

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 15 5862241 12023.12 2216 2176 487.4
A 1 162 402228 820.79 2216 2176 487.4
A 9 143 64166 127.19 2216 2176 487.4
B 4 239 2069215 4831.17 2218 2152 427.9
B 3 64 708324 1650.48 2218 2152 427.9
B 15 204 484908 1128.3 2218 2152 427.9
C 14 234 57664 114.38 2182 2144 485.4
C 13 61 12942 22.24 2182 2144 485.4
C 8 128 12140 20.59 2182 2144 485.4
D 1 52 1780307 3498.4 2183 2101 508.3
D 8 195 1596214 3136.22 2183 2101 508.3
D 7 80 677529 1328.82 2183 2101 508.3

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