ASTROSAT CZTI

Data Quality Report

Orbit 51998

Creation date: 2025-05-09T20:22:12.127512
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/AS1C09_011T06_9000006468_51998cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51998cztM0_level2_quad_clean.evt
Size (bytes)1,094,984,640105,289,920
Size1.0 GB 100.4 MB
Events in quadrant A13,102,002510,345
Events in quadrant B5,770,788827,749
Events in quadrant C7,456,646713,038
Events in quadrant D13,532,001532,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0449262
B0230032
C0281262
D0463092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8697355240.841670%
B86974905.634127%
C869887210.025293%
D8698273731.467004%

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 10027 8697 3137 3137 31.29% 36.07%
B 10027 8698 295 295 2.94% 3.39%
C 10028 8699 705 705 7.03% 8.10%
D 10028 8698 2675 2675 26.68% 30.75%

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 7 64 4269514 21339.71 782 760 200.0
A 4 95 3964688 19815.87 782 760 200.0
A 12 2 389800 1944.83 782 760 200.0
B 4 206 785835 4121.42 900 867 190.5
B 10 128 309264 1619.22 900 867 190.5
B 10 247 266753 1396.02 900 867 190.5
C 15 224 2693635 11361.05 869 861 237.0
C 9 38 260541 1095.61 869 861 237.0
C 14 254 218288 917.34 869 861 237.0
D 6 42 4507654 19911.55 795 759 226.3
D 12 17 1508376 6660.68 795 759 226.3
D 6 43 1039404 4588.75 795 759 226.3

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