ASTROSAT CZTI

Data Quality Report

Orbit 20160129_G02_021T10_9000000304_level2

Creation date: 2018-05-16T22:40:21.103966
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/AS1G02_021T10_9000000304cztM0_level2.evt modeM0/AS1G02_021T10_9000000304cztM0_level2_quad_clean.evt
Size (bytes)16,600,881,6001,187,714,880
Size15.5 GB 1.1 GB
Events in quadrant A127,335,8297,196,035
Events in quadrant B130,238,7597,358,678
Events in quadrant C121,103,4457,206,050
Events in quadrant D117,156,3207,005,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021040
B021040
C021040
D021040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04529820
B04614350
C04346710
D04233740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B1150
C1150
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1051946740.640721%
B1051895730.544734%
C1051924850.461062%
D10519610641.011445%

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 122374 105217 4319 4319 3.53% 4.10%
B 122374 105217 4244 4244 3.47% 4.03%
C 122374 105219 3146 3146 2.57% 2.99%
D 122374 105220 3746 3746 3.06% 3.56%

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 0 128 1042345 128.0 32807 33031 7885.0
A 15 236 527695 62.74 32807 33031 7885.0
A 0 231 311590 35.33 32807 33031 7885.0
B 8 3 710208 84.63 33988 34140 7988.0
B 4 48 323298 36.2 33988 34140 7988.0
B 5 189 188484 19.32 33988 34140 7988.0
C 9 236 314260 32.67 30867 31994 8639.0
C 8 208 124965 10.76 30867 31994 8639.0
C 12 4 108104 8.81 30867 31994 8639.0
D 1 84 1247050 130.91 30053 31220 9287.4
D 1 83 1212466 127.19 30053 31220 9287.4
D 10 172 538412 54.61 30053 31220 9287.4

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