ASTROSAT CZTI

Data Quality Report

Orbit 20161216_G06_028T01_9000000890_level2

Creation date: 2017-09-22T12:49:38.934779
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_028T01_9000000890cztM0_level2.evt modeM0/AS1G06_028T01_9000000890cztM0_level2_quad_clean.evt
Size (bytes)2,531,491,200446,604,480
Size2.4 GB 425.9 MB
Events in quadrant A16,168,5992,848,247
Events in quadrant B17,719,8572,878,175
Events in quadrant C17,265,0312,822,104
Events in quadrant D23,218,8542,641,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06920
B06920
C06920
D06920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0699520
B0742910
C0739800
D0922410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A340261650.484923%
B340265081.492976%
C340264281.257862%
D3402610713.147593%

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 41541 34033 0 0 0.00% 0.00%
B 41541 34033 242 242 0.58% 0.71%
C 41541 34033 230 230 0.55% 0.68%
D 41541 34033 733 733 1.76% 2.15%

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 108324 124.63 4159 4079 836.5
A 0 226 39075 41.84 4159 4079 836.5
A 12 194 38785 41.49 4159 4079 836.5
B 3 220 991669 1262.22 4174 4088 782.4
B 4 81 254700 320.31 4174 4088 782.4
B 0 219 174485 217.78 4174 4088 782.4
C 9 247 1007429 1078.85 4044 4082 930.0
C 9 16 411627 438.21 4044 4082 930.0
C 9 54 54325 54.02 4044 4082 930.0
D 8 195 4598265 4715.05 4004 3893 974.4
D 2 33 1192749 1220.08 4004 3893 974.4
D 13 105 935618 956.2 4004 3893 974.4

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