ASTROSAT CZTI

Data Quality Report

Orbit 35690

Creation date: 2022-05-05T15:01:32.634634
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/AS1A09_029T04_9000005110_35690cztM0_level2.evt modeM0/AS1A09_029T04_9000005110_35690cztM0_level2_quad_clean.evt
Size (bytes)1,182,015,360236,278,080
Size1.1 GB 225.3 MB
Events in quadrant A7,986,4701,531,037
Events in quadrant B9,544,5011,537,613
Events in quadrant C7,814,8411,536,163
Events in quadrant D9,372,7661,450,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03333
B03334
C03335
D03332

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034447564
B039280613
C033259470
D039469732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15964200.125282%
B159564843.033342%
C15958460.288257%
D159193452.167222%

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 21752 16062 0 0 0.00% 0.00%
B 21752 16068 348 348 1.60% 2.17%
C 21752 16073 21 21 0.10% 0.13%
D 21752 16040 288 288 1.32% 1.80%

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 15 169 437094 1178.5 1831 1790 369.4
A 10 83 359236 967.71 1831 1790 369.4
A 15 223 70216 185.25 1831 1790 369.4
B 5 172 1227465 3550.6 1797 1749 345.2
B 5 255 978363 2829.01 1797 1749 345.2
B 3 112 81074 229.78 1797 1749 345.2
C 15 214 670425 1638.78 1770 1780 408.0
C 0 10 182523 442.98 1770 1780 408.0
C 9 187 28265 64.91 1770 1780 408.0
D 13 249 788695 1816.92 1761 1710 433.1
D 2 249 583013 1342.06 1761 1710 433.1
D 2 250 476508 1096.17 1761 1710 433.1

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