ASTROSAT CZTI

Data Quality Report

Orbit 43851

Creation date: 2024-06-27T22:56:31.785476
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_087T01_9000005908_43851cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43851cztM0_level2_quad_clean.evt
Size (bytes)1,733,160,960325,100,160
Size1.6 GB 310.0 MB
Events in quadrant A14,929,5552,161,945
Events in quadrant B10,920,7732,388,364
Events in quadrant C22,804,7621,992,618
Events in quadrant D13,976,8121,940,085

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0576374
B0449804
C0818564
D0547894

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1976511025.575512%
B197654002.023779%
C19764255612.932605%
D1976514677.422211%

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 24375 19767 669 669 2.74% 3.38%
B 24375 19766 114 114 0.47% 0.58%
C 24375 19765 2008 2008 8.24% 10.16%
D 24375 19766 1316 1316 5.40% 6.66%

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 2718927 5793.19 2310 2269 468.9
A 15 223 2576189 5488.81 2310 2269 468.9
A 10 248 375770 796.48 2310 2269 468.9
B 5 235 687223 1512.15 2341 2273 453.0
B 0 183 235753 515.45 2341 2273 453.0
B 0 200 227586 497.42 2341 2273 453.0
C 3 233 9656207 18706.79 2204 2220 516.1
C 0 239 1892272 3662.4 2204 2220 516.1
C 15 158 1476286 2856.34 2204 2220 516.1
D 5 235 1744392 3127.6 2248 2189 557.0
D 2 249 1291590 2314.73 2248 2189 557.0
D 13 249 657065 1175.63 2248 2189 557.0

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