ASTROSAT CZTI

Data Quality Report

Orbit 20170619_G07_076T02_9000001320_level2

Creation date: 2017-09-24T06:23:08.139782
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_076T02_9000001320cztM0_level2.evt modeM0/AS1G07_076T02_9000001320cztM0_level2_quad_clean.evt
Size (bytes)1,114,905,600169,338,240
Size1.0 GB 161.5 MB
Events in quadrant A8,597,7011,114,195
Events in quadrant B6,370,4631,130,887
Events in quadrant C6,816,8051,086,140
Events in quadrant D11,118,776915,770

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02690
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342830
B0273010
C0290090
D0418730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126892872.261802%
B127451631.278933%
C127662862.240326%
D12719214216.840947%

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 16434 13062 47 47 0.29% 0.36%
B 16434 13116 9 9 0.05% 0.07%
C 16432 13147 116 116 0.71% 0.88%
D 16434 13101 1844 1844 11.22% 14.08%

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 5 2424134 7793.81 1543 1514 310.8
A 1 162 85095 268.89 1543 1514 310.8
A 15 174 63511 199.45 1543 1514 310.8
B 0 214 115443 388.85 1545 1510 293.0
B 10 245 64311 214.34 1545 1510 293.0
B 0 187 48729 161.16 1545 1510 293.0
C 4 254 992205 2869.82 1484 1490 345.2
C 8 128 12838 32.87 1484 1490 345.2
C 13 61 11351 28.56 1484 1490 345.2
D 1 52 4403788 13346.01 1360 1328 329.9
D 7 71 1041330 3152.76 1360 1328 329.9
D 12 233 195635 589.04 1360 1328 329.9

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