ASTROSAT CZTI

Data Quality Report

Orbit 20180913_G08_046T09_9000002362_level2

Creation date: 2018-09-14T11:23:17.080309
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/AS1G08_046T09_9000002362cztM0_level2_bc.evt modeM0/AS1G08_046T09_9000002362cztM0_level2_quad_clean.evt
Size (bytes)1,060,994,880353,698,560
Size1011.8 MB 337.3 MB
Events in quadrant A8,340,2682,231,633
Events in quadrant B5,950,2842,287,904
Events in quadrant C5,358,9592,203,083
Events in quadrant D10,657,5592,152,465

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0646470
B0570000
C0549540
D0726680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A267229593.588803%
B267224481.676521%
C267224241.586708%
D2672212874.816256%

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 28918 26719 333 333 1.15% 1.25%
B 28918 26721 3 3 0.01% 0.01%
C 28918 26719 0 0 0.00% 0.00%
D 28918 26720 183 183 0.63% 0.68%

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 10 253 2997623 10522.28 1293 1263 284.8
A 13 210 264007 922.67 1293 1263 284.8
A 15 239 32170 108.53 1293 1263 284.8
B 7 220 279102 1092.9 1316 1282 254.2
B 4 216 102620 398.65 1316 1282 254.2
B 3 209 73781 285.2 1316 1282 254.2
C 3 233 431168 1442.01 1263 1256 298.1
C 0 207 20714 65.27 1263 1256 298.1
C 8 128 19573 61.44 1263 1256 298.1
D 4 239 4757640 15537.06 1287 1238 306.1
D 12 218 229460 745.5 1287 1238 306.1
D 7 38 198932 645.78 1287 1238 306.1

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