ASTROSAT CZTI

Data Quality Report

Orbit 20210707_C06_002T02_9000004518_level2

Creation date: 2021-07-09T11:24:04.276013
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C06_002T02_9000004518cztM0_level2_bc.evt modeM0/AS1C06_002T02_9000004518cztM0_level2_quad_clean.evt
Size (bytes)5,846,014,0801,555,686,720
Size5.4 GB 1.4 GB
Events in quadrant A20,934,94310,783,183
Events in quadrant B61,457,1329,910,140
Events in quadrant C24,904,02410,192,034
Events in quadrant D63,417,2799,827,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019100
B019100
C019100
D019100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670
B01670
C01670
D01670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01964330
B03427060
C02144550
D03317470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A934569371.002611%
B934581048111.214663%
C9346030493.262358%
D9345751055.462405%

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 109670 93461 5 5 0.00% 0.01%
B 109670 93445 1823 1823 1.66% 1.95%
C 109670 93457 39 39 0.04% 0.04%
D 109670 93460 1121 1121 1.02% 1.20%

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 96 247441 212.63 5312 5243 1139.0
A 13 254 177892 151.57 5312 5243 1139.0
A 5 16 94322 78.21 5312 5243 1139.0
B 6 159 25026001 26691.29 4980 4881 937.4
B 14 167 8526859 9090.82 4980 4881 937.4
B 4 80 5537477 5901.9 4980 4881 937.4
C 0 10 3078330 2602.32 4986 4986 1181.0
C 10 22 738751 621.31 4986 4986 1181.0
C 3 233 732966 616.41 4986 4986 1181.0
D 8 195 37736463 29344.66 5075 4982 1285.8
D 12 79 1393687 1080.03 5075 4982 1285.8
D 12 218 962733 744.87 5075 4982 1285.8

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