ASTROSAT CZTI

Data Quality Report

Orbit 51307

Creation date: 2025-03-24T05:13:35.086044
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/AS1C07_001T03_9000006456_51307cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51307cztM0_level2_quad_clean.evt
Size (bytes)620,228,16091,022,400
Size591.5 MB 86.8 MB
Events in quadrant A3,954,470611,419
Events in quadrant B3,930,424671,705
Events in quadrant C7,077,216516,641
Events in quadrant D7,511,189518,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161112
B0161462
C0253292
D0266682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277681.083320%
B62771562.485264%
C6277118218.830652%
D627769111.008444%

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 7487 6278 26 26 0.35% 0.41%
B 7487 6278 78 78 1.04% 1.24%
C 7487 6278 1107 1107 14.79% 17.63%
D 7487 6278 809 809 10.81% 12.89%

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 12 3 776518 4782.25 657 640 162.2
A 4 3 152058 933.29 657 640 162.2
A 12 194 95150 582.53 657 640 162.2
B 5 172 295656 2103.52 664 643 140.2
B 5 185 225636 1604.26 664 643 140.2
B 10 254 169319 1202.7 664 643 140.2
C 4 12 4072070 23991.41 608 603 169.7
C 13 3 151786 890.86 608 603 169.7
C 10 252 83563 488.85 608 603 169.7
D 8 176 2795043 16256.4 615 592 171.9
D 3 12 786580 4572.4 615 592 171.9
D 6 42 605980 3521.78 615 592 171.9

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