ASTROSAT CZTI

Data Quality Report

Orbit 20160626_G05_246T03_9000000516_level2

Creation date: 2016-09-06T17:48:56.935870
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/AS1G05_246T03_9000000516cztM0_level2_bc.evt modeM0/AS1G05_246T03_9000000516cztM0_level2_quad_clean.evt
Size (bytes)2,166,341,760605,897,280
Size2.0 GB 577.8 MB
Events in quadrant A20,522,3123,594,326
Events in quadrant B14,211,6373,676,184
Events in quadrant C11,123,6493,710,234
Events in quadrant D15,897,7773,491,842

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011460
B011440
C011460
D011460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01498210
B01266890
C01171780
D01346670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5653824584.347518%
B5654913382.366090%
C565486461.142392%
D5653818593.288054%

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 65687 56564 100 100 0.15% 0.18%
B 65687 56564 171 171 0.26% 0.30%
C 65687 56564 27 27 0.04% 0.05%
D 65687 56565 153 153 0.23% 0.27%

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 4623328 7868.06 2634 2573 587.3
A 0 199 2792667 4750.87 2634 2573 587.3
A 0 50 1550972 2636.56 2634 2573 587.3
B 10 16 1488267 2825.79 2705 2625 525.7
B 14 167 988051 1874.35 2705 2625 525.7
B 15 204 534596 1011.84 2705 2625 525.7
C 9 144 215640 352.37 2683 2643 604.5
C 12 4 210613 344.05 2683 2643 604.5
C 1 16 137675 223.39 2683 2643 604.5
D 2 232 1557889 2502.89 2638 2537 621.4
D 11 132 1412390 2268.75 2638 2537 621.4
D 13 53 750093 1202.98 2638 2537 621.4

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