ASTROSAT CZTI

Data Quality Report

Orbit 39498

Creation date: 2024-06-27T22:05:20.563576
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_001T02_9000005486_39498cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39498cztM0_level2_quad_clean.evt
Size (bytes)31,492,8008,694,720
Size30.0 MB 8.3 MB
Events in quadrant A335,98154,692
Events in quadrant B285,83257,785
Events in quadrant C262,00255,624
Events in quadrant D237,15950,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013471
B012401
C011221
D011081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52940.756144%
B52950.945180%
C52920.378072%
D52930.567108%

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 529 529 2 2 0.38% 0.38%
B 529 529 2 2 0.38% 0.38%
C 529 529 1 1 0.19% 0.19%
D 529 529 1 1 0.19% 0.19%

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 104369 7635.05 55 54 13.7
A 6 10 8839 642.99 55 54 13.7
A 2 79 3274 235.68 55 54 13.7
B 5 172 65058 5120.19 54 53 12.7
B 5 255 5493 428.49 54 53 12.7
B 12 111 1306 98.69 54 53 12.7
C 15 214 27104 1920.26 53 53 14.1
C 15 208 21769 1541.55 53 53 14.1
C 3 233 2958 206.22 53 53 14.1
D 2 249 11594 785.55 53 51 14.7
D 7 38 9529 645.01 53 51 14.7
D 2 250 2973 198.85 53 51 14.7

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