ASTROSAT CZTI

Data Quality Report

Orbit 20180123_C03_021T01_9000001864_level2

Creation date: 2018-07-24T14:46:47.757307
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/AS1C03_021T01_9000001864cztM0_level2_bc.evt modeM0/AS1C03_021T01_9000001864cztM0_level2_quad_clean.evt
Size (bytes)2,243,589,120876,208,320
Size2.1 GB 835.6 MB
Events in quadrant A13,786,8025,542,278
Events in quadrant B17,507,0235,653,878
Events in quadrant C13,242,3385,567,339
Events in quadrant D18,879,6475,219,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013540
B013540
C013540
D013540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01393090
B01531740
C01371060
D01592690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A664409011.356111%
B6644019792.978627%
C664405790.871463%
D6644024063.621312%

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 77671 66438 1 1 0.00% 0.00%
B 77671 66435 151 151 0.19% 0.23%
C 77671 66439 1 1 0.00% 0.00%
D 77671 66436 289 289 0.37% 0.44%

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 12 189 326403 433.53 3403 3328 745.2
A 1 162 107601 139.92 3403 3328 745.2
A 9 143 79741 102.54 3403 3328 745.2
B 4 239 2069198 3206.9 3435 3342 644.2
B 3 64 1207695 1869.56 3435 3342 644.2
B 11 51 400901 617.15 3435 3342 644.2
C 15 208 41464 52.01 3359 3310 733.5
C 14 234 27195 32.56 3359 3310 733.5
C 13 61 20251 23.09 3359 3310 733.5
D 1 52 4082753 5393.71 3296 3169 756.4
D 13 104 413236 542.16 3296 3169 756.4
D 11 176 355908 466.36 3296 3169 756.4

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