ASTROSAT CZTI

Data Quality Report

Orbit 41045

Creation date: 2024-06-27T22:23:39.914521
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/AS1A12_029T02_9000005590_41045cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41045cztM0_level2_quad_clean.evt
Size (bytes)403,130,880117,103,680
Size384.5 MB 111.7 MB
Events in quadrant A3,674,354784,048
Events in quadrant B3,226,910795,841
Events in quadrant C3,453,737771,379
Events in quadrant D4,012,840697,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152853
B0146492
C0147672
D0170872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7128130.182379%
B7128420.589226%
C7128260.364759%
D71281932.707632%

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 9934 7130 4 4 0.04% 0.06%
B 9934 7130 14 14 0.14% 0.20%
C 9934 7130 23 23 0.23% 0.32%
D 9934 7130 162 162 1.63% 2.27%

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 597875 3676.81 787 769 162.4
A 13 248 15991 93.73 787 769 162.4
A 13 254 11960 68.91 787 769 162.4
B 8 128 102899 673.05 779 755 151.8
B 0 190 33250 214.12 779 755 151.8
B 12 111 19937 126.4 779 755 151.8
C 15 214 303363 1687.98 768 771 179.3
C 14 254 80676 445.74 768 771 179.3
C 0 10 51514 283.07 768 771 179.3
D 13 249 370190 2017.7 756 733 183.1
D 13 171 363249 1979.79 756 733 183.1
D 12 0 209012 1137.47 756 733 183.1

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