ASTROSAT CZTI

Data Quality Report

Orbit 20160109_G02_020T01_9000000260_level2

Creation date: 2017-10-26T23:13:15.989917
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_020T01_9000000260cztM0_level2.evt modeM0/AS1G02_020T01_9000000260cztM0_level2_quad_clean.evt
Size (bytes)14,798,750,4001,198,166,400
Size13.8 GB 1.1 GB
Events in quadrant A111,099,9087,613,508
Events in quadrant B111,200,8097,783,328
Events in quadrant C104,551,4987,568,129
Events in quadrant D115,424,9227,172,849

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018240
B018240
C018240
D018240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940180
B03941850
C03744760
D04076130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8976715721.751200%
B897633440.383231%
C897675230.582619%
D8976754746.098009%

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 127352 89782 5148 5148 4.04% 5.73%
B 127352 89784 3741 3741 2.94% 4.17%
C 127352 89785 3288 3288 2.58% 3.66%
D 127352 89785 9909 9909 7.78% 11.04%

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 14 5 4704026 707.68 27588 27697 6608.0
A 15 106 279963 38.18 27588 27697 6608.0
A 8 14 232227 30.95 27588 27697 6608.0
B 0 220 687731 96.9 28961 29052 6797.2
B 0 182 445798 61.31 28961 29052 6797.2
B 10 224 193405 24.18 28961 29052 6797.2
C 14 223 1251034 166.43 26396 27342 7352.5
C 8 208 164676 18.68 26396 27342 7352.5
C 9 54 152167 16.98 26396 27342 7352.5
D 10 84 13821065 1888.48 25348 25956 7304.9
D 13 53 2784562 377.64 25348 25956 7304.9
D 7 207 1188992 159.21 25348 25956 7304.9

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