ASTROSAT CZTI

Data Quality Report

Orbit 20151105_P01_014T01_9000000080_level2

Creation date: 2016-09-06T17:59:33.521194
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/AS1P01_014T01_9000000080cztM0_level2_bc.evt modeM0/AS1P01_014T01_9000000080cztM0_level2_quad_clean.evt
Size (bytes)1,309,933,440491,512,320
Size1.2 GB 468.7 MB
Events in quadrant A10,104,0693,096,992
Events in quadrant B7,348,9723,142,945
Events in quadrant C7,883,8403,122,393
Events in quadrant D11,844,0783,019,021

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07480
B07480
C07480
D07480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01730
B01730
C01730
D01730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01631100
B01528650
C01463360
D01545700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3648512803.508291%
B36485760.208305%
C364855731.570508%
D364854901.343018%

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 53728 36486 494 494 0.92% 1.35%
B 53728 36485 22 22 0.04% 0.06%
C 53728 36485 212 212 0.39% 0.58%
D 53728 36485 100 100 0.19% 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 0 149 3036021 9580.62 1507 1475 316.7
A 13 17 492400 1549.94 1507 1475 316.7
A 0 238 274138 860.85 1507 1475 316.7
B 5 251 231462 839.59 1558 1514 273.9
B 4 250 167723 606.87 1558 1514 273.9
B 8 4 163006 589.64 1558 1514 273.9
C 15 241 1222316 3794.32 1509 1488 321.8
C 9 85 196205 605.18 1509 1488 321.8
C 5 249 192045 592.25 1509 1488 321.8
D 1 4 2409283 7352.57 1492 1454 327.5
D 13 216 695492 2119.32 1492 1454 327.5
D 13 221 666597 2031.09 1492 1454 327.5

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