ASTROSAT CZTI

Data Quality Report

Orbit 20170109_A02_111T01_9000000954_level2

Creation date: 2017-09-22T19:25:48.310670
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/AS1A02_111T01_9000000954cztM0_level2.evt modeM0/AS1A02_111T01_9000000954cztM0_level2_quad_clean.evt
Size (bytes)2,030,022,720388,494,720
Size1.9 GB 370.5 MB
Events in quadrant A13,453,0652,461,820
Events in quadrant B15,807,0062,463,221
Events in quadrant C13,359,9622,437,698
Events in quadrant D16,814,4842,324,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0616960
B0678420
C0616560
D0705610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06160
B06160
C06160
D06160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A302651940.641004%
B302656862.266645%
C302651110.366760%
D302653321.096977%

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 32290 30271 0 0 0.00% 0.00%
B 32290 30271 244 244 0.76% 0.81%
C 32290 30271 4 4 0.01% 0.01%
D 32290 30271 126 126 0.39% 0.42%

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 0 226 33720 43.11 3477 3399 703.4
A 12 194 32168 40.9 3477 3399 703.4
A 13 248 30634 38.72 3477 3399 703.4
B 0 219 576691 876.22 3481 3393 654.3
B 0 228 562697 854.83 3481 3393 654.3
B 4 48 414285 628.0 3481 3393 654.3
C 7 247 53788 64.85 3388 3400 776.9
C 1 241 35683 41.55 3388 3400 776.9
C 12 4 30449 34.81 3388 3400 776.9
D 8 195 2104360 2560.5 3374 3272 820.6
D 14 34 439023 531.03 3374 3272 820.6
D 2 136 412834 499.11 3374 3272 820.6

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