ASTROSAT CZTI

Data Quality Report

Orbit 20240819_A13_071T03_9000006400_level2

Creation date: 2024-08-21T10:46:39.645047
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_071T03_9000006400cztM0_level2.fits modeM0/AS1A13_071T03_9000006400cztM0_level2_quad_clean.evt
Size (bytes)483,229,440496,198,080
Size460.8 MB 473.2 MB
Events in quadrant A3,366,1263,589,425
Events in quadrant B202,222533
Events in quadrant C3,496,7523,686,483
Events in quadrant D2,900,0223,116,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02570560
B0720410
C01402230
D01818320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013700
B013700
C013700
D013700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6755728464.212739%
B675576754499.980757%
C675576050.895540%
D6755747276.997054%

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 74962 67548 0 0 0.00% 0.00%
B 74960 25602 0 0 0.00% 0.00%
C 74962 67550 0 0 0.00% 0.00%
D 74962 67180 0 0 0.00% 0.00%

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 7 110 2774 8.7 874 813 225.5
A 15 236 2658 8.18 874 813 225.5
A 7 30 2536 7.64 874 813 225.5
B 2 9 178 8.39 54 52 15.0
B 3 17 162 7.33 54 52 15.0
B 2 177 157 6.99 54 52 15.0
C 1 81 2686 7.56 924 854 242.3
C 3 202 2647 7.4 924 854 242.3
C 3 203 2605 7.23 924 854 242.3
D 15 63 2121 5.85 831 751 234.4
D 3 14 2113 5.81 831 751 234.4
D 6 67 2054 5.56 831 751 234.4

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