ASTROSAT CZTI

Data Quality Report

Orbit 20200822_C05_017T01_9000003836_level2

Creation date: 2021-01-09T03:45:31.753412
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/AS1C05_017T01_9000003836cztM0_level2_bc.evt modeM0/AS1C05_017T01_9000003836cztM0_level2_quad_clean.evt
Size (bytes)5,190,192,0001,435,066,560
Size4.8 GB 1.3 GB
Events in quadrant A23,491,4319,422,054
Events in quadrant B35,109,7899,418,470
Events in quadrant C28,030,7039,078,572
Events in quadrant D63,604,0578,540,196

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01490
D01470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019820
B020760
C020780
D020800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02170310
B02616480
C02416700
D03675130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10233912031.175505%
B10234449214.808294%
C10233728682.802505%
D1023381374813.433915%

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 116886 102353 1 1 0.00% 0.00%
B 116886 102345 67 67 0.06% 0.07%
C 116886 102336 125 125 0.11% 0.12%
D 116886 102347 2277 2277 1.95% 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 6 16 281929 209.02 6008 5912 1320.5
A 13 254 162196 118.35 6008 5912 1320.5
A 12 194 38632 24.78 6008 5912 1320.5
B 0 189 6764835 5914.71 5984 5894 1142.7
B 7 205 4051893 3540.63 5984 5894 1142.7
B 5 172 351933 302.82 5984 5894 1142.7
C 3 233 3670658 2691.48 5739 5763 1361.7
C 4 254 1199907 876.97 5739 5763 1361.7
C 2 16 796287 580.56 5739 5763 1361.7
D 1 52 33228668 25356.42 5560 5433 1310.2
D 12 233 5673677 4326.08 5560 5433 1310.2
D 7 80 1689038 1284.95 5560 5433 1310.2

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