ASTROSAT CZTI

Data Quality Report

Orbit 44261

Creation date: 2024-06-27T23:01:08.217309
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_080T05_9000005980_44261cztM0_level2.fits modeM0/AS1A13_080T05_9000005980_44261cztM0_level2_quad_clean.evt
Size (bytes)630,198,720127,166,400
Size601.0 MB 121.3 MB
Events in quadrant A8,475,953824,457
Events in quadrant B4,838,617877,917
Events in quadrant C3,807,201835,205
Events in quadrant D5,572,328743,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311772
B0201322
C0176182
D0224472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81816347.749664%
B81822292.798827%
C8182760.928868%
D81824064.962112%

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 8566 8183 247 247 2.88% 3.02%
B 8567 8184 94 94 1.10% 1.15%
C 8567 8184 31 31 0.36% 0.38%
D 8567 8184 347 347 4.05% 4.24%

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 15 223 2945833 16094.13 872 854 183.0
A 10 83 1909555 10430.93 872 854 183.0
A 7 3 131354 713.17 872 854 183.0
B 0 219 232419 1334.97 888 861 173.5
B 4 170 219776 1262.08 888 861 173.5
B 4 173 185195 1062.71 888 861 173.5
C 14 254 194213 942.28 867 867 205.2
C 5 250 133257 645.21 867 867 205.2
C 3 233 77192 371.97 867 867 205.2
D 1 20 489183 2255.02 850 820 216.6
D 6 239 275052 1266.27 850 820 216.6
D 13 171 271637 1250.5 850 820 216.6

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