ASTROSAT CZTI

Data Quality Report

Orbit 48174

Creation date: 2024-08-25T04:11:26.056965
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_004T05_9000006408_48174cztM0_level2.fits modeM0/AS1C09_004T05_9000006408_48174cztM0_level2_quad_clean.evt
Size (bytes)624,432,96079,519,680
Size595.5 MB 75.8 MB
Events in quadrant A7,751,686717,476
Events in quadrant B1,230,124118
Events in quadrant C3,197,161738,252
Events in quadrant D10,383,675462,045

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278332
B075862
C0149282
D0357152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70254185.950178%
B7025702499.985765%
C7025711.010676%
D7024266837.984055%

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 7655 7027 98 98 1.28% 1.39%
B 7654 7024 0 0 0.00% 0.00%
C 7655 7027 34 34 0.44% 0.48%
D 7654 7025 2054 2054 26.84% 29.24%

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 10 83 4758418 30508.67 749 730 155.9
A 13 248 29882 186.93 749 730 155.9
A 0 31 17203 105.63 749 730 155.9
B 2 177 968747 79726.64 50 48 12.2
B 4 21 21851 1794.45 50 48 12.2
B 0 200 16886 1385.81 50 48 12.2
C 12 2 203190 1129.55 757 760 179.2
C 12 249 12991 68.25 757 760 179.2
C 0 207 10835 56.22 757 760 179.2
D 12 2 7528682 48511.58 612 590 155.2
D 8 48 141530 908.23 612 590 155.2
D 12 128 75396 482.06 612 590 155.2

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