ASTROSAT CZTI

Data Quality Report

Orbit 20190222_T03_083T01_9000002728_level2

Creation date: 2019-02-23T10:58:38.931746
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/AS1T03_083T01_9000002728cztM0_level2_bc.evt modeM0/AS1T03_083T01_9000002728cztM0_level2_quad_clean.evt
Size (bytes)1,119,242,880477,391,680
Size1.0 GB 455.3 MB
Events in quadrant A5,994,6023,245,000
Events in quadrant B10,777,5983,219,772
Events in quadrant C5,752,8543,109,695
Events in quadrant D9,478,7172,980,199

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0579610
B0756740
C0575860
D0687710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05620
C05620
D05620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A277313051.099852%
B277319353.371678%
C277313211.157549%
D277318423.036313%

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 32380 27731 7 7 0.02% 0.03%
B 32380 27730 32 32 0.10% 0.12%
C 32380 27731 1 1 0.00% 0.00%
D 32380 27730 89 89 0.27% 0.32%

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 15 174 255026 765.21 1474 1451 331.4
A 4 2 71671 211.9 1474 1451 331.4
A 0 254 11163 29.31 1474 1451 331.4
B 10 245 4675706 16383.2 1471 1438 285.3
B 0 189 101053 349.15 1471 1438 285.3
B 7 220 98280 339.43 1471 1438 285.3
C 3 233 194851 572.94 1410 1409 337.6
C 0 207 117491 343.81 1410 1409 337.6
C 9 160 10172 25.95 1410 1409 337.6
D 7 238 1247587 3736.89 1411 1366 333.5
D 1 52 1181383 3538.37 1411 1366 333.5
D 8 230 630053 1885.17 1411 1366 333.5

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