ASTROSAT CZTI

Data Quality Report

Orbit 20190103_A05_208T01_9000002614_level2

Creation date: 2019-01-17T15:18:52.826586
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/AS1A05_208T01_9000002614cztM0_level2_bc.evt modeM0/AS1A05_208T01_9000002614cztM0_level2_quad_clean.evt
Size (bytes)3,021,145,9201,115,922,240
Size2.8 GB 1.0 GB
Events in quadrant A18,849,0587,003,678
Events in quadrant B20,191,2787,141,532
Events in quadrant C23,682,3766,826,731
Events in quadrant D22,713,0646,733,263

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860410
B01918760
C02075010
D01998770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018140
B018140
C018140
D018140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8889413611.531037%
B8889318112.037281%
C8889320312.284769%
D8889420252.277994%

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 110913 88896 0 0 0.00% 0.00%
B 110913 88892 23 23 0.02% 0.03%
C 110913 88894 0 0 0.00% 0.00%
D 110913 88892 191 191 0.17% 0.21%

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 14 237 1040483 1027.92 4589 4486 1007.9
A 8 205 142693 137.13 4589 4486 1007.9
A 4 2 37106 32.37 4589 4486 1007.9
B 10 245 659175 752.89 4630 4507 869.5
B 7 220 491955 560.58 4630 4507 869.5
B 0 189 229917 259.23 4630 4507 869.5
C 3 233 6357024 6156.13 4436 4415 1031.9
C 5 218 187413 177.34 4436 4415 1031.9
C 9 54 37668 32.22 4436 4415 1031.9
D 1 52 1532815 1472.76 4523 4358 1037.8
D 5 222 1393150 1338.19 4523 4358 1037.8
D 7 238 902994 865.89 4523 4358 1037.8

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