ASTROSAT CZTI

Data Quality Report

Orbit 20170816_A03_050T01_9000001468_level2

Creation date: 2017-09-24T15:31:24.752104
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/AS1A03_050T01_9000001468cztM0_level2.evt modeM0/AS1A03_050T01_9000001468cztM0_level2_quad_clean.evt
Size (bytes)5,641,416,0001,291,726,080
Size5.3 GB 1.2 GB
Events in quadrant A37,544,3098,479,154
Events in quadrant B39,669,5778,572,640
Events in quadrant C34,975,1878,605,194
Events in quadrant D53,397,8418,118,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015920
B015920
C015920
D015920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01657240
B01694270
C01596770
D02098690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7807611981.534402%
B7807410361.326946%
C780764450.569957%
D7807624613.152057%

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 90316 78085 394 394 0.44% 0.50%
B 90316 78086 135 135 0.15% 0.17%
C 90316 78087 6 6 0.01% 0.01%
D 90316 78087 1756 1756 1.94% 2.25%

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 15 223 1113276 603.94 9145 8960 1828.5
A 15 239 402376 215.16 9145 8960 1828.5
A 8 15 366536 195.56 9145 8960 1828.5
B 11 51 1005172 584.09 9179 8962 1705.6
B 5 255 758556 439.49 9179 8962 1705.6
B 4 239 749111 433.96 9179 8962 1705.6
C 14 67 139823 65.05 8894 8934 2012.2
C 13 61 66469 28.59 8894 8934 2012.2
C 4 175 56108 23.44 8894 8934 2012.2
D 1 52 6753969 3259.01 8796 8561 2069.8
D 8 195 4983485 2403.61 8796 8561 2069.8
D 2 16 1848195 888.81 8796 8561 2069.8

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