ASTROSAT CZTI

Data Quality Report

Orbit 20160811_G05_227T01_9000000592_level2

Creation date: 2025-11-04T18:07:43.438580
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/AS1G05_227T01_9000000592cztM0_level2.fits modeM0/AS1G05_227T01_9000000592cztM0_level2_quad_clean.evt
Size (bytes)528,675,840468,869,760
Size504.2 MB 447.1 MB
Events in quadrant A3,166,6562,646,722
Events in quadrant B3,042,1502,641,221
Events in quadrant C3,131,8302,604,267
Events in quadrant D2,660,8102,298,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01218770
B01348410
C01310060
D01524620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584397511.285101%
B5843915852.712230%
C5843914312.448707%
D5843922943.925461%

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 74758 58429 0 0 0.00% 0.00%
B 74758 58396 0 0 0.00% 0.00%
C 74758 58436 0 0 0.00% 0.00%
D 74758 58413 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 0 29 3192 11.5 821 765 211.0
A 14 188 3123 11.17 821 765 211.0
A 14 204 2780 9.55 821 765 211.0
B 2 9 2817 12.54 804 763 163.8
B 14 254 2188 8.7 804 763 163.8
B 12 226 2104 8.19 804 763 163.8
C 1 80 2263 6.69 827 762 224.4
C 1 81 2216 6.48 827 762 224.4
C 12 241 2168 6.27 827 762 224.4
D 11 82 2134 7.04 757 683 206.2
D 4 160 2070 6.73 757 683 206.2
D 3 14 2020 6.48 757 683 206.2

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