ASTROSAT CZTI

Data Quality Report

Orbit 49773

Creation date: 2024-12-11T09:11:14.827961
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/AS1A13_037T01_9000006440_49773cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49773cztM0_level2_quad_clean.evt
Size (bytes)1,440,408,96052,848,000
Size1.3 GB 50.4 MB
Events in quadrant A17,529,555308,360
Events in quadrant B5,798,586700,918
Events in quadrant C12,650,33030,516
Events in quadrant D16,791,05153,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0569710
B0220560
C0425010
D0547070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7124652291.549691%
B71255387.550877%
C71257125100.000000%
D71247124100.000000%

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 7124 7124 5988 5988 84.05% 84.05%
B 7125 7125 337 337 4.73% 4.73%
C 7124 7124 2306 2306 32.37% 32.37%
D 7123 7123 5766 5766 80.95% 80.95%

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 0 98 5586350 46457.51 370 354 120.2
A 12 50 4502195 37440.83 370 354 120.2
A 3 99 1086761 9035.41 370 354 120.2
B 5 172 598430 3838.1 732 707 155.7
B 3 232 372378 2386.58 732 707 155.7
B 10 247 246631 1579.13 732 707 155.7
C 15 197 2396309 81563.89 54 51 29.4
C 1 23 1149679 39131.07 54 51 29.4
C 15 174 965324 32855.99 54 51 29.4
D 8 129 8634628 94405.07 93 80 91.5
D 15 168 1926334 21060.53 93 80 91.5
D 15 25 760556 8314.6 93 80 91.5

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