ASTROSAT CZTI

Data Quality Report

Orbit 20151114_P01_142T01_9000000102_level2

Creation date: 2016-09-06T17:58:56.214582
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/AS1P01_142T01_9000000102cztM0_level2_bc.evt modeM0/AS1P01_142T01_9000000102cztM0_level2_quad_clean.evt
Size (bytes)376,963,20089,349,120
Size359.5 MB 85.2 MB
Events in quadrant A2,017,648538,129
Events in quadrant B2,626,093539,334
Events in quadrant C3,230,276523,026
Events in quadrant D2,957,513515,130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366810
B0394260
C0394190
D0368590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8497640.753207%
B84972072.436154%
C8497140.164764%
D8497580.682594%

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 10012 8497 10 10 0.10% 0.12%
B 10012 8497 161 161 1.61% 1.89%
C 10012 8497 0 0 0.00% 0.00%
D 10012 8497 1 1 0.01% 0.01%

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 10 216 242982 3156.23 360 351 76.9
A 15 171 170876 2218.25 360 351 76.9
A 12 133 168253 2184.13 360 351 76.9
B 5 191 828635 12076.75 367 355 68.6
B 5 247 249069 3626.38 367 355 68.6
B 0 220 47216 683.26 367 355 68.6
C 3 31 423867 5562.78 352 344 76.1
C 3 15 389418 5110.3 352 344 76.1
C 3 175 321054 4212.38 352 344 76.1
D 0 25 1238357 15803.6 352 340 78.3
D 12 188 161582 2058.29 352 340 78.3
D 1 4 95285 1212.0 352 340 78.3

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