ASTROSAT CZTI

Data Quality Report

Orbit 20161024_A02_197T01_9000000748_level2

Creation date: 2017-09-18T19:20:26.594161
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_197T01_9000000748cztM0_level2.evt modeM0/AS1A02_197T01_9000000748cztM0_level2_quad_clean.evt
Size (bytes)1,003,466,880166,878,720
Size957.0 MB 159.1 MB
Events in quadrant A8,910,068992,293
Events in quadrant B6,845,3081,028,104
Events in quadrant C6,681,8381,012,430
Events in quadrant D6,919,197967,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373030
B0312070
C0312210
D0321660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152681160.759759%
B15265630.412709%
C15266710.465086%
D15270690.451866%

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 18031 15274 16 16 0.09% 0.10%
B 18031 15274 1 1 0.01% 0.01%
C 18031 15274 18 18 0.10% 0.12%
D 18031 15274 25 25 0.14% 0.16%

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 15 236 1859747 5320.89 1714 1674 349.2
A 15 79 405528 1156.5 1714 1674 349.2
A 15 223 39113 107.21 1714 1674 349.2
B 12 111 32331 92.43 1745 1700 331.4
B 11 111 25039 70.42 1745 1700 331.4
B 15 204 23451 65.63 1745 1700 331.4
C 9 16 110835 281.27 1679 1688 388.0
C 13 61 13418 30.23 1679 1688 388.0
C 8 222 9264 19.52 1679 1688 388.0
D 8 230 208742 513.55 1669 1618 403.3
D 4 95 84986 206.7 1669 1618 403.3
D 12 233 82304 200.05 1669 1618 403.3

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