ASTROSAT CZTI

Data Quality Report

Orbit 20170613_G07_003T01_9000001290_level2

Creation date: 2017-09-24T04:35:38.743501
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_003T01_9000001290cztM0_level2.evt modeM0/AS1G07_003T01_9000001290cztM0_level2_quad_clean.evt
Size (bytes)2,090,050,560337,927,680
Size1.9 GB 322.3 MB
Events in quadrant A19,655,8922,091,999
Events in quadrant B14,744,8072,108,564
Events in quadrant C13,146,2132,060,312
Events in quadrant D13,833,2772,021,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770640
B0621310
C0589020
D0613760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05820
C05780
D05800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2835115355.414271%
B283684001.410039%
C284462160.759333%
D284013791.334460%

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 34236 28678 1078 1078 3.15% 3.76%
B 34236 28673 137 137 0.40% 0.48%
C 34236 28720 70 70 0.20% 0.24%
D 34236 28707 199 199 0.58% 0.69%

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 3939325 5885.84 3316 3256 668.7
A 15 223 1136551 1694.68 3316 3256 668.7
A 15 174 895912 1334.84 3316 3256 668.7
B 6 51 442964 684.92 3398 3321 641.9
B 4 48 419903 648.99 3398 3321 641.9
B 0 214 236886 363.87 3398 3321 641.9
C 14 234 352001 461.61 3272 3287 755.4
C 13 61 24992 28.73 3272 3287 755.4
C 8 222 21654 24.31 3272 3287 755.4
D 7 71 622228 705.09 3247 3170 878.0
D 12 233 352314 397.67 3247 3170 878.0
D 1 52 320300 361.2 3247 3170 878.0

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