ASTROSAT CZTI

Data Quality Report

Orbit 20220621_T04_084T01_9000005198_level2

Creation date: 2022-06-28T17:55:06.534478
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/AS1T04_084T01_9000005198cztM0_level2_bc.evt modeM0/AS1T04_084T01_9000005198cztM0_level2_quad_clean.evt
Size (bytes)5,966,311,6801,582,200,000
Size5.6 GB 1.5 GB
Events in quadrant A33,010,36810,008,263
Events in quadrant B52,721,8669,809,090
Events in quadrant C34,778,7509,852,863
Events in quadrant D51,234,3929,236,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02836580
B03739010
C02804270
D03581010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026880
B026880
C026880
D026880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05140
B05140
C05140
D05150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1315819140.694629%
B13158184546.424940%
C13158111560.878546%
D13158169545.284958%

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 187302 131611 28 28 0.01% 0.02%
B 187302 131582 324 324 0.17% 0.25%
C 187302 131581 91 91 0.05% 0.07%
D 187302 131584 1555 1555 0.83% 1.18%

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 10 83 3525131 2323.15 6905 6799 1514.5
A 15 223 2338410 1539.56 6905 6799 1514.5
A 13 254 214284 137.0 6905 6799 1514.5
B 5 172 13720533 10328.62 6764 6620 1327.8
B 5 255 4648863 3496.3 6764 6620 1327.8
B 0 189 2629647 1975.53 6764 6620 1327.8
C 15 214 5271487 3468.96 6690 6645 1517.7
C 0 10 3038228 1997.48 6690 6645 1517.7
C 0 207 177348 112.47 6690 6645 1517.7
D 12 6 7210615 4632.21 6642 6455 1555.2
D 12 227 4492077 2884.21 6642 6455 1555.2
D 2 249 4462581 2865.25 6642 6455 1555.2

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