ASTROSAT CZTI

Data Quality Report

Orbit 20160820_G05_002T01_9000000616_level2

Creation date: 2017-10-27T07:32:42.090818
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/AS1G05_002T01_9000000616cztM0_level2.evt modeM0/AS1G05_002T01_9000000616cztM0_level2_quad_clean.evt
Size (bytes)660,991,680134,400,960
Size630.4 MB 128.2 MB
Events in quadrant A4,565,795866,024
Events in quadrant B4,633,659871,531
Events in quadrant C4,521,575861,485
Events in quadrant D5,659,198819,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199100
B0199640
C0199640
D0234480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94031481.573966%
B94011101.170088%
C94001051.117021%
D94053163.359915%

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 69082 9427 16 16 0.02% 0.17%
B 69082 9426 1 1 0.00% 0.01%
C 69082 9418 18 18 0.03% 0.19%
D 69082 9429 183 183 0.26% 1.94%

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 50 188720 822.02 1131 1107 228.2
A 8 15 12909 51.71 1131 1107 228.2
A 12 194 11254 44.46 1131 1107 228.2
B 14 167 76748 352.77 1137 1110 214.4
B 10 246 46880 213.47 1137 1110 214.4
B 4 80 44027 200.16 1137 1110 214.4
C 9 247 235684 936.47 1092 1098 250.5
C 12 4 12265 44.58 1092 1098 250.5
C 13 61 9088 31.9 1092 1098 250.5
D 1 31 536975 2034.47 1083 1048 263.4
D 13 235 378528 1432.98 1083 1048 263.4
D 2 136 281066 1063.0 1083 1048 263.4

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