ASTROSAT CZTI

Data Quality Report

Orbit 43703

Creation date: 2024-06-27T22:54:44.601262
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_008T02_9000005900_43703cztM0_level2.fits modeM0/AS1A13_008T02_9000005900_43703cztM0_level2_quad_clean.evt
Size (bytes)680,083,200107,447,040
Size648.6 MB 102.5 MB
Events in quadrant A8,336,406721,562
Events in quadrant B3,627,663782,326
Events in quadrant C4,852,992717,325
Events in quadrant D7,846,080570,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294942
B0150162
C0187492
D0279672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66155127.739985%
B66151662.509448%
C66155087.679516%
D6615135820.529101%

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 7660 6616 177 177 2.31% 2.68%
B 7660 6616 40 40 0.52% 0.60%
C 7660 6616 357 357 4.66% 5.40%
D 7660 6616 1095 1095 14.30% 16.55%

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 15 222 3573599 22555.14 771 756 158.4
A 10 83 879429 5547.01 771 756 158.4
A 14 63 487777 3074.53 771 756 158.4
B 5 255 185841 1202.62 787 763 153.9
B 5 235 161211 1042.58 787 763 153.9
B 4 171 59950 384.59 787 763 153.9
C 15 157 1566806 8778.29 756 760 178.4
C 3 233 138723 773.33 756 760 178.4
C 15 174 55803 308.53 756 760 178.4
D 7 80 1099836 5956.77 721 698 184.5
D 12 34 886573 4800.99 721 698 184.5
D 13 138 498632 2698.55 721 698 184.5

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