ASTROSAT CZTI

Data Quality Report

Orbit 20220423_A11_097T09_9000005086_level2

Creation date: 2022-04-26T18:27:01.376628
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/AS1A11_097T09_9000005086cztM0_level2_bc.evt modeM0/AS1A11_097T09_9000005086cztM0_level2_quad_clean.evt
Size (bytes)3,081,974,400908,164,800
Size2.9 GB 866.1 MB
Events in quadrant A17,735,8695,703,409
Events in quadrant B19,593,5455,740,336
Events in quadrant C25,792,4115,614,431
Events in quadrant D25,134,5035,328,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015300
B015300
C015300
D015300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01563370
B01661240
C01802420
D01842840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A746741180.158020%
B7467412411.661890%
C7467414281.912312%
D7467419002.544393%

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 104856 74691 9 9 0.01% 0.01%
B 104856 74675 172 172 0.16% 0.23%
C 104856 74674 339 339 0.32% 0.45%
D 104856 74675 254 254 0.24% 0.34%

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 1394906 1628.74 3889 3822 854.1
A 15 169 988345 1152.72 3889 3822 854.1
A 9 143 183826 210.76 3889 3822 854.1
B 5 236 2664601 3484.15 3913 3829 763.7
B 5 172 860639 1121.95 3913 3829 763.7
B 5 200 369395 478.69 3913 3829 763.7
C 0 10 3124991 3568.54 3805 3775 874.6
C 15 214 2934255 3350.47 3805 3775 874.6
C 15 159 1510504 1722.67 3805 3775 874.6
D 12 235 3472024 3832.34 3795 3676 905.0
D 8 195 1903006 2098.66 3795 3676 905.0
D 2 250 1752171 1931.99 3795 3676 905.0

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