ASTROSAT CZTI

Data Quality Report

Orbit 20170623_G07_069T01_9000001332_level2

Creation date: 2017-09-24T07:06:17.904400
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_069T01_9000001332cztM0_level2.evt modeM0/AS1G07_069T01_9000001332cztM0_level2_quad_clean.evt
Size (bytes)5,084,075,520874,578,240
Size4.7 GB 834.1 MB
Events in quadrant A37,491,5975,600,077
Events in quadrant B30,635,6215,678,499
Events in quadrant C29,364,5175,717,361
Events in quadrant D52,141,0625,078,383

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013160
B013120
C013120
D013100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542320
B01349850
C01327290
D01999160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6436010981.706029%
B643887131.107349%
C643845570.865122%
D64300881613.710731%

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 76411 64701 236 236 0.31% 0.36%
B 76412 64714 23 23 0.03% 0.04%
C 76412 64707 48 48 0.06% 0.07%
D 76412 64690 7774 7774 10.17% 12.02%

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 5 6816535 4542.75 7499 7339 1498.9
A 14 111 486802 319.87 7499 7339 1498.9
A 5 16 447261 293.49 7499 7339 1498.9
B 0 214 398410 277.62 7574 7401 1408.4
B 0 187 232829 160.06 7574 7401 1408.4
B 0 219 183855 125.29 7574 7401 1408.4
C 4 254 266161 153.15 7416 7453 1689.2
C 14 234 142430 79.9 7416 7453 1689.2
C 13 61 55381 28.37 7416 7453 1689.2
D 1 52 22286585 13055.07 6908 6750 1706.6
D 12 233 839998 488.25 6908 6750 1706.6
D 7 71 578176 334.83 6908 6750 1706.6

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