ASTROSAT CZTI

Data Quality Report

Orbit 46879

Creation date: 2024-06-27T23:28:51.998268
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_053T01_9000006274_46879cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46879cztM0_level2_quad_clean.evt
Size (bytes)477,089,28095,227,200
Size455.0 MB 90.8 MB
Events in quadrant A5,577,792647,313
Events in quadrant B5,160,049617,892
Events in quadrant C2,749,308637,554
Events in quadrant D3,726,355577,798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202711
B0192761
C0124172
D0151881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57581973.421327%
B575867911.792289%
C5758981.701980%
D57582955.123307%

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 6913 5758 43 43 0.62% 0.75%
B 6913 5758 485 485 7.02% 8.42%
C 6913 5759 60 60 0.87% 1.04%
D 6913 5758 208 208 3.01% 3.61%

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 2961452 21758.86 652 639 136.1
A 13 248 56806 412.77 652 639 136.1
A 9 191 19240 136.7 652 639 136.1
B 3 112 1937366 15769.93 626 606 122.8
B 5 32 308327 2505.6 626 606 122.8
B 15 36 176769 1434.39 626 606 122.8
C 14 254 181509 1232.64 631 634 146.7
C 1 3 85329 577.19 631 634 146.7
C 1 241 14479 94.35 631 634 146.7
D 2 249 504894 3236.9 628 608 155.8
D 1 52 464577 2978.11 628 608 155.8
D 13 249 280248 1794.94 628 608 155.8

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