ASTROSAT CZTI

Data Quality Report

Orbit 20220827_C07_001T01_9000005320_level2

Creation date: 2022-09-06T15:30:27.217113
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/AS1C07_001T01_9000005320cztM0_level2_bc.evt modeM0/AS1C07_001T01_9000005320cztM0_level2_quad_clean.evt
Size (bytes)4,677,482,8801,396,077,120
Size4.4 GB 1.3 GB
Events in quadrant A20,324,1479,630,576
Events in quadrant B20,184,3399,677,820
Events in quadrant C23,633,3399,505,005
Events in quadrant D72,233,0268,134,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015920
B015920
C015920
D015920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01659180
B01723510
C01759360
D03646620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A778142540.326419%
B778128561.100087%
C7781410891.399491%
D778141857423.869741%

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 105992 77832 46 46 0.04% 0.06%
B 105992 77816 80 80 0.08% 0.10%
C 105992 77816 379 379 0.36% 0.49%
D 105992 77810 3071 3071 2.90% 3.95%

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 3330524 3843.89 3863 3812 865.5
A 9 143 370188 423.33 3863 3812 865.5
A 6 10 343393 392.37 3863 3812 865.5
B 5 172 1022929 1321.14 3867 3786 771.4
B 0 190 600219 773.17 3867 3786 771.4
B 0 213 561648 723.17 3867 3786 771.4
C 1 23 3697078 4273.62 3742 3717 864.2
C 15 214 3102819 3586.0 3742 3717 864.2
C 14 254 889467 1024.91 3742 3717 864.2
D 12 235 40578382 47879.72 3445 3337 847.4
D 12 227 5970612 7041.56 3445 3337 847.4
D 1 47 3198066 3769.87 3445 3337 847.4

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