ASTROSAT CZTI

Data Quality Report

Orbit 20190806_C04_001T01_9000003074_level2

Creation date: 2019-08-10T17:41:54.039587
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/AS1C04_001T01_9000003074cztM0_level2_bc.evt modeM0/AS1C04_001T01_9000003074cztM0_level2_quad_clean.evt
Size (bytes)2,985,477,1201,087,220,160
Size2.8 GB 1.0 GB
Events in quadrant A14,317,5077,494,180
Events in quadrant B17,171,7227,361,197
Events in quadrant C13,128,0637,061,877
Events in quadrant D41,463,9796,646,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01336040
B01467550
C01321320
D02303340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012920
B012900
C012920
D012920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636866721.055177%
B6368413822.170090%
C636859971.565518%
D63685900514.139907%

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 73449 63689 0 0 0.00% 0.00%
B 73449 63687 93 93 0.13% 0.15%
C 73449 63686 1 1 0.00% 0.00%
D 73449 63690 2903 2903 3.95% 4.56%

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 2 79 492434 647.31 3498 3452 755.4
A 5 16 244148 318.63 3498 3452 755.4
A 8 205 55923 69.46 3498 3452 755.4
B 7 220 1163367 1797.82 3438 3362 645.2
B 0 189 1084723 1675.93 3438 3362 645.2
B 3 64 415219 638.31 3438 3362 645.2
C 9 54 208611 264.23 3283 3275 777.1
C 3 233 133131 167.1 3283 3275 777.1
C 7 247 68238 83.6 3283 3275 777.1
D 1 20 20600057 27104.96 3247 3138 759.9
D 1 52 3946879 5189.85 3247 3138 759.9
D 1 239 1563084 2052.84 3247 3138 759.9

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