ASTROSAT CZTI

Data Quality Report

Orbit 20161011_G06_132T01_9000000728_level2

Creation date: 2017-10-18T07:00:39.968293
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/AS1G06_132T01_9000000728cztM0_level2.evt modeM0/AS1G06_132T01_9000000728cztM0_level2_quad_clean.evt
Size (bytes)344,548,80070,165,440
Size328.6 MB 66.9 MB
Events in quadrant A2,384,738444,548
Events in quadrant B2,707,199443,206
Events in quadrant C2,343,005435,717
Events in quadrant D2,620,469413,407

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112210
B0116880
C0111570
D0119270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01460
C01560
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5500490.890909%
B5450561.027523%
C5461170.311298%
D5364400.745712%

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 16855 6510 0 0 0.00% 0.00%
B 16853 6453 2 2 0.01% 0.03%
C 16855 6461 1 1 0.01% 0.02%
D 16855 6414 6 6 0.04% 0.09%

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 14 31 6596 47.68 615 602 125.7
A 12 194 5982 42.8 615 602 125.7
A 0 226 5950 42.54 615 602 125.7
B 15 204 229197 1932.4 617 602 118.3
B 0 219 45660 380.89 617 602 118.3
B 0 214 23399 192.71 617 602 118.3
C 1 16 13219 91.52 591 592 138.0
C 8 128 8141 54.71 591 592 138.0
C 8 79 6547 43.16 591 592 138.0
D 1 20 213412 1509.16 575 556 141.0
D 2 136 80680 568.08 575 556 141.0
D 10 15 68694 483.1 575 556 141.0

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