ASTROSAT CZTI

Data Quality Report

Orbit 20170417_G07_027T01_9000001180_level2

Creation date: 2017-09-23T18:36:55.436336
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_027T01_9000001180cztM0_level2.evt modeM0/AS1G07_027T01_9000001180cztM0_level2_quad_clean.evt
Size (bytes)984,277,440220,466,880
Size938.7 MB 210.3 MB
Events in quadrant A6,951,4701,422,257
Events in quadrant B7,705,0361,428,462
Events in quadrant C6,711,9251,433,521
Events in quadrant D7,437,0161,370,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306100
B0325260
C0301020
D0324660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14820590.398111%
B148201120.755735%
C14820350.236167%
D148201631.099865%

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 17265 14823 9 9 0.05% 0.06%
B 17265 14823 24 24 0.14% 0.16%
C 17265 14822 0 0 0.00% 0.00%
D 17265 14823 101 101 0.58% 0.68%

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 5 16 127387 347.11 1765 1730 362.0
A 13 248 20011 50.5 1765 1730 362.0
A 0 226 16338 40.35 1765 1730 362.0
B 4 48 350616 1047.72 1768 1728 333.0
B 0 214 233986 697.48 1768 1728 333.0
B 5 255 72537 212.64 1768 1728 333.0
C 13 61 12834 28.01 1716 1730 396.4
C 8 128 8381 16.78 1716 1730 396.4
C 12 4 7805 15.33 1716 1730 396.4
D 4 95 249640 553.61 1688 1649 447.9
D 7 71 178396 394.57 1688 1649 447.9
D 2 14 137526 303.33 1688 1649 447.9

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