ASTROSAT CZTI

Data Quality Report

Orbit 45421

Creation date: 2024-06-27T23:11:25.401769
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_038T03_9000006058_45421cztM0_level2.fits modeM0/AS1A13_038T03_9000006058_45421cztM0_level2_quad_clean.evt
Size (bytes)566,225,280128,004,480
Size540.0 MB 122.1 MB
Events in quadrant A7,528,686804,088
Events in quadrant B5,004,744872,704
Events in quadrant C3,607,889857,339
Events in quadrant D4,188,964777,466

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283677
B0207150
C0169420
D0184230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81116508.013808%
B81133994.918033%
C8114130.160217%
D8114670.825733%

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 8113 8112 535 535 6.59% 6.60%
B 8113 8113 172 172 2.12% 2.12%
C 8114 8114 12 12 0.15% 0.15%
D 8114 8114 66 66 0.81% 0.81%

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 2733745 14910.79 876 857 183.3
A 9 191 1257894 6858.47 876 857 183.3
A 7 3 76044 410.22 876 857 183.3
B 5 255 1240134 7073.11 894 865 175.2
B 15 201 94154 532.45 894 865 175.2
B 3 112 44638 249.83 894 865 175.2
C 14 254 53216 250.25 882 887 209.1
C 0 239 53029 249.36 882 887 209.1
C 3 233 23523 108.25 882 887 209.1
D 1 52 368828 1693.45 873 847 217.3
D 11 241 131095 599.4 873 847 217.3
D 2 249 103052 470.35 873 847 217.3

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