ASTROSAT CZTI

Data Quality Report

Orbit 20160601_G05_191T01_9000000476_level2

Creation date: 2017-10-26T23:24:02.734979
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/AS1G05_191T01_9000000476cztM0_level2.evt modeM0/AS1G05_191T01_9000000476cztM0_level2_quad_clean.evt
Size (bytes)3,755,868,480696,700,800
Size3.5 GB 664.4 MB
Events in quadrant A28,610,6824,442,314
Events in quadrant B26,572,0804,462,094
Events in quadrant C23,943,5754,428,719
Events in quadrant D31,141,7664,230,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01188270
B01127370
C01069090
D01298170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010500
B010500
C010500
D010500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5157810522.039629%
B515828021.554806%
C515825241.015858%
D5158319653.809395%

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 57889 51591 256 256 0.44% 0.50%
B 57889 51593 58 58 0.10% 0.11%
C 57889 51593 52 52 0.09% 0.10%
D 57889 51593 1147 1147 1.98% 2.22%

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 13 164 2551862 2059.24 6137 6021 1236.3
A 13 251 1934354 1559.76 6137 6021 1236.3
A 0 50 158214 123.1 6137 6021 1236.3
B 15 204 1180274 982.14 6231 6093 1195.5
B 4 81 469995 388.03 6231 6093 1195.5
B 14 167 135896 108.57 6231 6093 1195.5
C 9 247 412196 293.0 5981 6033 1386.2
C 1 16 77648 51.66 5981 6033 1386.2
C 13 61 50733 32.25 5981 6033 1386.2
D 13 172 6639988 4690.14 5905 5760 1414.5
D 13 223 1119318 787.24 5905 5760 1414.5
D 13 239 294486 204.12 5905 5760 1414.5

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