ASTROSAT CZTI

Data Quality Report

Orbit 43856

Creation date: 2024-06-27T22:56:36.826262
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_087T01_9000005908_43856cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43856cztM0_level2_quad_clean.evt
Size (bytes)748,172,160108,241,920
Size713.5 MB 103.2 MB
Events in quadrant A7,616,971667,240
Events in quadrant B3,708,036813,838
Events in quadrant C9,782,270644,346
Events in quadrant D6,017,251638,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277670
B0160990
C0342520
D0230820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7368133418.105320%
B73691061.438458%
C7369164122.268965%
D736988612.023341%

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 7368 7368 1173 1173 15.92% 15.92%
B 7369 7369 23 23 0.31% 0.31%
C 7369 7369 1621 1621 22.00% 22.00%
D 7368 7368 915 915 12.42% 12.42%

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 15 223 3755265 23555.09 764 749 159.4
A 10 83 792090 4964.72 764 749 159.4
A 10 248 51818 320.4 764 749 159.4
B 5 235 153332 935.63 822 798 163.0
B 0 200 117667 716.86 822 798 163.0
B 4 170 56310 340.5 822 798 163.0
C 3 233 3656666 20913.48 735 738 174.8
C 15 158 2465007 14096.68 735 738 174.8
C 0 239 429257 2451.31 735 738 174.8
D 2 249 2341352 12047.31 762 738 194.3
D 1 52 152170 779.43 762 738 194.3
D 13 249 143310 733.83 762 738 194.3

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