ASTROSAT CZTI

Data Quality Report

Orbit 31660

Creation date: 2024-06-27T20:31:13.678947
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/AS1A10_056T01_9000004626_31660cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31660cztM0_level2_quad_clean.evt
Size (bytes)570,280,320103,435,200
Size543.9 MB 98.6 MB
Events in quadrant A3,279,711673,076
Events in quadrant B5,423,198678,854
Events in quadrant C3,861,752652,284
Events in quadrant D4,229,266637,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145102
B0215362
C0159042
D0173682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7046320.454158%
B70461261.788249%
C70461932.739143%
D7046590.837355%

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 7721 7047 0 0 0.00% 0.00%
B 7721 7047 0 0 0.00% 0.00%
C 7721 7047 34 34 0.44% 0.48%
D 7721 7047 30 30 0.39% 0.43%

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 13 254 12322 67.03 848 831 171.4
A 3 137 8718 46.01 848 831 171.4
A 0 226 7203 37.17 848 831 171.4
B 6 159 1935239 11825.6 848 826 163.6
B 4 80 95465 578.55 848 826 163.6
B 0 190 30146 179.24 848 826 163.6
C 3 233 236459 1229.75 815 820 191.6
C 0 10 174958 908.79 815 820 191.6
C 14 238 132183 685.56 815 820 191.6
D 8 195 997562 5166.15 817 797 192.9
D 2 250 49584 252.86 817 797 192.9
D 2 153 45764 233.06 817 797 192.9

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