ASTROSAT CZTI

Data Quality Report

Orbit 20191106_A07_054T01_9000003286_level2

Creation date: 2019-11-19T14:51:48.015554
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/AS1A07_054T01_9000003286cztM0_level2_bc.evt modeM0/AS1A07_054T01_9000003286cztM0_level2_quad_clean.evt
Size (bytes)1,986,099,8401,250,104,320
Size1.8 GB 1.2 GB
Events in quadrant A13,408,5168,523,945
Events in quadrant B13,781,2588,585,525
Events in quadrant C12,727,0848,211,188
Events in quadrant D15,770,3158,064,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01341130
B01349720
C01338980
D01403200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0890
C0890
D0890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013340
B013340
C013340
D013340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A653986190.946512%
B653987411.133062%
C653989591.466406%
D653987061.079544%

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 97243 65402 3 3 0.00% 0.00%
B 97243 65399 1 1 0.00% 0.00%
C 97243 65399 0 0 0.00% 0.00%
D 97243 65400 84 84 0.09% 0.13%

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 2 79 175626 231.1 3418 3356 745.4
A 13 254 99736 129.29 3418 3356 745.4
A 5 168 50550 63.31 3418 3356 745.4
B 0 245 252342 382.44 3428 3346 651.1
B 0 219 114242 170.33 3428 3346 651.1
B 0 190 105428 156.79 3428 3346 651.1
C 0 10 54452 66.46 3269 3251 770.4
C 10 22 50742 61.64 3269 3251 770.4
C 10 91 39999 47.7 3269 3251 770.4
D 1 52 997660 1274.46 3352 3244 780.3
D 12 227 506320 644.75 3352 3244 780.3
D 2 136 294933 373.83 3352 3244 780.3

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