ASTROSAT CZTI

Data Quality Report

Orbit 20180205_A04_044T01_9000001882_level2

Creation date: 2018-07-14T16:49:06.376714
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/AS1A04_044T01_9000001882cztM0_level2_bc.evt modeM0/AS1A04_044T01_9000001882cztM0_level2_quad_clean.evt
Size (bytes)2,852,300,160839,928,960
Size2.7 GB 801.0 MB
Events in quadrant A20,838,4485,306,933
Events in quadrant B21,721,0635,122,649
Events in quadrant C15,504,2025,411,740
Events in quadrant D23,896,9685,143,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01589140
B01708610
C01445360
D01678600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013220
B013220
C013220
D013220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494513672.104858%
B6494549277.586419%
C6494515102.325044%
D6494521373.290477%

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 75445 64947 194 194 0.26% 0.30%
B 75445 64944 458 458 0.61% 0.71%
C 75445 64917 137 137 0.18% 0.21%
D 75445 64945 552 552 0.73% 0.85%

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 15 222 3658245 5100.02 3321 3253 716.7
A 0 23 2829013 3942.95 3321 3253 716.7
A 8 15 519853 720.84 3321 3253 716.7
B 4 239 7064147 11526.26 3254 3168 612.6
B 0 85 662806 1076.79 3254 3168 612.6
B 0 214 274048 442.18 3254 3168 612.6
C 15 208 2717535 3807.45 3262 3219 712.9
C 13 61 19297 22.55 3262 3219 712.9
C 14 234 15107 16.68 3262 3219 712.9
D 1 52 8893431 10819.15 3256 3152 821.7
D 2 136 712722 863.52 3256 3152 821.7
D 8 195 615247 744.9 3256 3152 821.7

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