ASTROSAT CZTI

Data Quality Report

Orbit 43821

Creation date: 2024-06-27T22:56:11.976696
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_018T01_9000005906_43821cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43821cztM0_level2_quad_clean.evt
Size (bytes)733,599,360109,226,880
Size699.6 MB 104.2 MB
Events in quadrant A5,445,182795,128
Events in quadrant B6,594,090752,230
Events in quadrant C4,477,045784,534
Events in quadrant D10,144,949529,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209422
B0239542
C0173252
D0346262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63913375.273040%
B6392108516.974343%
C63923775.897997%
D6392223734.996871%

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 7576 6391 113 113 1.49% 1.77%
B 7577 6392 702 702 9.26% 10.98%
C 7577 6392 241 241 3.18% 3.77%
D 7577 6392 1909 1909 25.19% 29.87%

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 991109 5931.3 816 799 167.0
A 15 223 644230 3853.72 816 799 167.0
A 14 254 560314 3351.12 816 799 167.0
B 0 200 1935242 12722.14 786 765 152.1
B 5 235 875264 5751.17 786 765 152.1
B 5 172 337557 2214.92 786 765 152.1
C 15 174 726844 3877.63 797 804 187.2
C 14 96 268842 1431.54 797 804 187.2
C 15 158 175901 935.16 797 804 187.2
D 10 102 2517822 14118.03 702 682 178.3
D 12 2 1891893 10607.34 702 682 178.3
D 12 33 1721268 9650.35 702 682 178.3

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