ASTROSAT CZTI

Data Quality Report

Orbit 20220706_A10_073T02_9000005226_level2

Creation date: 2022-07-08T17:46:34.427264
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_073T02_9000005226cztM0_level2_bc.evt modeM0/AS1A10_073T02_9000005226cztM0_level2_quad_clean.evt
Size (bytes)4,862,900,1601,070,493,120
Size4.5 GB 1020.9 MB
Events in quadrant A21,780,3927,078,042
Events in quadrant B30,407,3936,567,411
Events in quadrant C28,416,2286,958,400
Events in quadrant D61,004,5616,097,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017080
B017080
C017080
D017080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01808370
B02418240
C02024240
D03413170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A833745380.645285%
B83374973711.678701%
C8337422622.713076%
D833741168514.015161%

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 115711 83393 56 56 0.05% 0.07%
B 115710 83349 767 767 0.66% 0.92%
C 115710 83373 458 458 0.40% 0.55%
D 115710 83375 2310 2310 2.00% 2.77%

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 10 83 2485917 2557.44 4449 4390 970.3
A 15 223 1824875 1876.17 4449 4390 970.3
A 13 6 117233 116.29 4449 4390 970.3
B 5 200 6618006 8123.48 4175 4091 814.2
B 4 171 4660896 5719.68 4175 4091 814.2
B 0 219 748809 914.69 4175 4091 814.2
C 0 10 3703405 3839.76 4288 4264 963.4
C 15 214 3312665 3434.16 4288 4264 963.4
C 0 207 2491552 2581.84 4288 4264 963.4
D 12 235 35700183 36174.55 4139 4017 986.8
D 12 17 1611489 1629.01 4139 4017 986.8
D 2 250 1233568 1246.03 4139 4017 986.8

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