ASTROSAT CZTI

Data Quality Report

Orbit 45912

Creation date: 2024-06-27T23:17:37.707527
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_071T03_9000006142_45912cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45912cztM0_level2_quad_clean.evt
Size (bytes)783,164,16098,625,600
Size746.9 MB 94.1 MB
Events in quadrant A5,908,218701,009
Events in quadrant B6,475,331701,653
Events in quadrant C3,020,900714,210
Events in quadrant D13,054,530389,929

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220072
B0240291
C0142671
D0435311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68752593.767273%
B68766229.045957%
C6876851.236184%
D6876318746.349622%

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 7290 6875 22 22 0.30% 0.32%
B 7291 6876 294 294 4.03% 4.28%
C 7291 6878 8 8 0.11% 0.12%
D 7291 6876 2979 2979 40.86% 43.32%

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 2905383 18618.31 749 730 156.0
A 0 247 64632 409.6 749 730 156.0
A 14 235 17835 109.64 749 730 156.0
B 3 112 3451083 23711.55 735 713 145.5
B 0 186 30153 202.32 735 713 145.5
B 4 158 29717 199.32 735 713 145.5
C 12 2 70400 397.33 746 750 175.3
C 4 254 20689 113.75 746 750 175.3
C 14 254 9792 51.58 746 750 175.3
D 11 241 5994151 39518.06 601 582 151.7
D 1 52 3712673 24475.34 601 582 151.7
D 13 249 482861 3179.86 601 582 151.7

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