ASTROSAT CZTI

Data Quality Report

Orbit 20160519_G05_083T03_9000000462_level2

Creation date: 2025-10-29T17:43:03.831775
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/AS1G05_083T03_9000000462cztM0_level2.fits modeM0/AS1G05_083T03_9000000462cztM0_level2_quad_clean.evt
Size (bytes)173,736,000131,607,360
Size165.7 MB 125.5 MB
Events in quadrant A1,027,760673,084
Events in quadrant B1,020,014707,357
Events in quadrant C1,050,290702,809
Events in quadrant D913,278651,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459630
B0407840
C0399990
D0383100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181417704.244529%
B181412761.521416%
C181413972.188413%
D181412311.273359%

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 27724 18139 0 0 0.00% 0.00%
B 27724 18140 0 0 0.00% 0.00%
C 27724 18133 0 0 0.00% 0.00%
D 27724 18140 0 0 0.00% 0.00%

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 29 973 10.22 268 250 70.7
A 7 110 853 8.52 268 250 70.7
A 0 30 810 7.91 268 250 70.7
B 2 9 870 10.9 269 256 56.3
B 5 128 756 8.88 269 256 56.3
B 12 226 738 8.56 269 256 56.3
C 9 188 737 6.33 277 259 75.5
C 3 158 731 6.25 277 259 75.5
C 1 81 711 5.98 277 259 75.5
D 3 14 699 6.57 260 237 70.3
D 7 3 668 6.13 260 237 70.3
D 7 5 661 6.03 260 237 70.3

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