ASTROSAT CZTI

Data Quality Report

Orbit 09448

Creation date: 2024-06-27T15:46:13.254440
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/AS1C02_045T01_9000001342_09448cztM0_level2.evt modeM0/AS1C02_045T01_9000001342_09448cztM0_level2_quad_clean.evt
Size (bytes)1,215,397,440274,173,120
Size1.1 GB 261.5 MB
Events in quadrant A9,883,9831,775,685
Events in quadrant B8,527,1301,793,311
Events in quadrant C8,156,2601,787,633
Events in quadrant D9,059,6531,743,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03604
B03602
C03602
D03604

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331
B0331
C0332
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041017382
B037062320
C036867329
D039371355

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174731680.961483%
B174671871.070590%
C174661040.595443%
D174672131.219442%

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 20444 17543 15 15 0.07% 0.09%
B 20444 17550 70 70 0.34% 0.40%
C 20449 17549 26 26 0.13% 0.15%
D 20449 17540 114 114 0.56% 0.65%

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 8 5 1799358 4439.91 2009 1964 404.8
A 1 162 183817 449.21 2009 1964 404.8
A 1 178 63111 151.04 2009 1964 404.8
B 0 187 298374 790.42 1998 1945 375.0
B 0 214 185651 489.85 1998 1945 375.0
B 0 219 103664 271.23 1998 1945 375.0
C 9 68 378226 843.78 1950 1958 445.9
C 4 254 155511 344.34 1950 1958 445.9
C 13 61 14624 28.4 1950 1958 445.9
D 1 52 911267 1876.43 1950 1903 484.6
D 12 233 281591 577.12 1950 1903 484.6
D 7 9 145016 295.31 1950 1903 484.6

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