ASTROSAT CZTI

Data Quality Report

Orbit 20190423_T03_099T03_9000002854_level2

Creation date: 2019-04-24T09:55:50.866914
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_099T03_9000002854cztM0_level2_bc.evt modeM0/AS1T03_099T03_9000002854cztM0_level2_quad_clean.evt
Size (bytes)1,910,004,480781,738,560
Size1.8 GB 745.5 MB
Events in quadrant A10,403,1755,261,246
Events in quadrant B10,982,3005,313,093
Events in quadrant C9,712,9845,041,275
Events in quadrant D23,506,4614,803,213

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09700
B09700
C09700
D09700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0996420
B01015100
C0990510
D01460250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A475055001.052521%
B475056741.418798%
C475056591.387222%
D47505487010.251552%

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 57220 47498 4 4 0.01% 0.01%
B 57220 47498 25 25 0.04% 0.05%
C 57220 47500 1 1 0.00% 0.00%
D 57220 47498 2337 2337 4.08% 4.92%

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 5 168 162336 282.25 2600 2561 566.1
A 4 2 139124 241.25 2600 2561 566.1
A 13 254 61597 104.29 2600 2561 566.1
B 3 64 258628 519.84 2603 2541 492.6
B 7 220 202542 405.99 2603 2541 492.6
B 0 229 120589 239.63 2603 2541 492.6
C 5 112 81384 137.23 2460 2452 575.2
C 3 233 66095 110.65 2460 2452 575.2
C 9 15 57225 95.23 2460 2452 575.2
D 7 223 6577442 11710.68 2411 2331 561.5
D 7 238 3787330 6741.32 2411 2331 561.5
D 1 52 1857478 3304.13 2411 2331 561.5

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