ASTROSAT CZTI

Data Quality Report

Orbit 20181111_A05_074T02_9000002504_level2

Creation date: 2018-11-15T19:23:09.912351
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/AS1A05_074T02_9000002504cztM0_level2_bc.evt modeM0/AS1A05_074T02_9000002504cztM0_level2_quad_clean.evt
Size (bytes)1,199,471,040342,861,120
Size1.1 GB 327.0 MB
Events in quadrant A6,027,6842,212,942
Events in quadrant B6,355,5842,247,894
Events in quadrant C5,776,0692,167,119
Events in quadrant D16,342,5681,919,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0565970
B0576730
C0570170
D01039430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A267004491.681648%
B267005442.037453%
C267006402.397004%
D26700446016.704120%

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 32610 26700 0 0 0.00% 0.00%
B 32610 26700 3 3 0.01% 0.01%
C 32610 26700 1 1 0.00% 0.00%
D 32610 26698 426 426 1.31% 1.60%

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 15 174 73772 220.49 1532 1505 327.8
A 12 189 39770 116.75 1532 1505 327.8
A 0 23 36639 107.2 1532 1505 327.8
B 10 16 92131 320.93 1560 1528 282.3
B 0 189 68664 237.8 1560 1528 282.3
B 4 216 53602 184.45 1560 1528 282.3
C 5 112 14771 38.64 1494 1488 343.8
C 3 233 14086 36.65 1494 1488 343.8
C 13 61 8781 21.22 1494 1488 343.8
D 1 52 10113088 31849.69 1412 1369 317.5
D 11 66 430713 1352.34 1412 1369 317.5
D 12 32 165636 517.4 1412 1369 317.5

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