ASTROSAT CZTI

Data Quality Report

Orbit 20161126_A02_070T01_9000000832_level2

Creation date: 2017-09-19T06:43:12.531350
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/AS1A02_070T01_9000000832cztM0_level2.evt modeM0/AS1A02_070T01_9000000832cztM0_level2_quad_clean.evt
Size (bytes)8,076,591,3601,228,777,920
Size7.5 GB 1.1 GB
Events in quadrant A53,503,0637,649,332
Events in quadrant B57,606,4267,721,816
Events in quadrant C46,150,7907,789,941
Events in quadrant D80,507,9777,100,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02252470
B02389850
C02088560
D03090870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020640
B020640
C020640
D020640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10147314611.439792%
B10147335453.493540%
C1014736160.607058%
D10147382148.094764%

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 116362 101476 278 278 0.24% 0.27%
B 116362 101475 1837 1837 1.58% 1.81%
C 116362 101481 37 37 0.03% 0.04%
D 116362 101477 6787 6787 5.83% 6.69%

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 4176720 1729.25 11900 11641 2408.6
A 15 236 1199475 493.16 11900 11641 2408.6
A 13 251 980879 402.41 11900 11641 2408.6
B 3 64 9459519 4140.56 11959 11679 2281.8
B 4 81 788019 340.23 11959 11679 2281.8
B 15 204 498869 213.51 11959 11679 2281.8
C 1 16 439347 160.52 11582 11655 2664.4
C 4 254 344298 124.85 11582 11655 2664.4
C 9 54 117898 39.87 11582 11655 2664.4
D 2 63 20544626 7481.36 11285 10936 2744.6
D 12 220 6960075 2531.89 11285 10936 2744.6
D 12 221 3241304 1176.97 11285 10936 2744.6

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