ASTROSAT CZTI

Data Quality Report

Orbit 39524

Creation date: 2024-06-27T22:05:41.439764
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_018T01_9000005488_39524cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39524cztM0_level2_quad_clean.evt
Size (bytes)423,576,00092,698,560
Size404.0 MB 88.4 MB
Events in quadrant A3,351,787635,891
Events in quadrant B2,662,678658,736
Events in quadrant C6,358,673527,051
Events in quadrant D2,844,371570,471

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136533
B0123642
C0229942
D0129712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5935560.943555%
B5935350.589722%
C5935106417.927548%
D5935981.651222%

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 8771 5937 41 41 0.47% 0.69%
B 8771 5937 26 26 0.30% 0.44%
C 8771 5937 969 969 11.05% 16.32%
D 8771 5937 65 65 0.74% 1.09%

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 462462 3606.25 627 615 128.1
A 15 222 273814 2133.22 627 615 128.1
A 15 174 142017 1104.11 627 615 128.1
B 5 255 164956 1356.07 625 606 121.2
B 15 85 34447 279.23 625 606 121.2
B 12 111 15274 121.03 625 606 121.2
C 9 187 3851981 29016.08 570 572 132.7
C 15 214 234281 1760.74 570 572 132.7
C 15 208 37850 280.85 570 572 132.7
D 2 249 226855 1522.63 608 589 148.6
D 13 249 158052 1059.63 608 589 148.6
D 12 227 69073 460.85 608 589 148.6

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