ASTROSAT CZTI

Data Quality Report

Orbit 51030

Creation date: 2025-03-05T13:48:47.513425
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_9000006452_51030cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51030cztM0_level2_quad_clean.evt
Size (bytes)500,777,28087,091,200
Size477.6 MB 83.1 MB
Events in quadrant A4,405,151583,293
Events in quadrant B5,304,516564,850
Events in quadrant C4,006,508549,781
Events in quadrant D4,351,971516,832

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172811
B0199771
C0162551
D0172971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60431382.283634%
B604387114.413371%
C60432814.650008%
D60422744.534922%

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 7203 6044 95 95 1.32% 1.57%
B 7203 6044 660 660 9.16% 10.92%
C 7203 6044 228 228 3.17% 3.77%
D 7202 6043 248 248 3.44% 4.10%

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 12 3 909680 5715.15 635 620 159.1
A 4 3 188265 1179.7 635 620 159.1
A 13 248 144791 906.38 635 620 159.1
B 12 32 1420082 11199.24 596 577 126.8
B 4 81 1119786 8830.04 596 577 126.8
B 5 185 137036 1076.6 596 577 126.8
C 15 157 576677 3420.72 605 600 168.4
C 9 38 561536 3330.81 605 600 168.4
C 1 44 94448 557.26 605 600 168.4
D 12 128 858106 5115.1 603 582 167.6
D 2 216 265541 1580.47 603 582 167.6
D 10 181 154521 918.24 603 582 167.6

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