ASTROSAT CZTI

Data Quality Report

Orbit 23752

Creation date: 2024-06-27T18:58:18.331525
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/AS1A08_009T01_9000003516_23752cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23752cztM0_level2_quad_clean.evt
Size (bytes)461,306,880124,761,600
Size439.9 MB 119.0 MB
Events in quadrant A3,145,184834,391
Events in quadrant B3,510,876866,191
Events in quadrant C3,338,027842,679
Events in quadrant D3,557,214804,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134172
B0144762
C0139902
D0146782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175580.939271%
B61761262.040155%
C61761171.894430%
D6176831.343912%

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 7475 6175 0 0 0.00% 0.00%
B 7476 6176 26 26 0.35% 0.42%
C 7476 6176 1 1 0.01% 0.02%
D 7476 6176 17 17 0.23% 0.28%

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 11220 64.16 815 800 162.4
A 0 226 6979 38.04 815 800 162.4
A 3 137 6713 36.41 815 800 162.4
B 3 64 136900 890.19 825 805 152.9
B 0 229 71809 464.43 825 805 152.9
B 0 189 52456 337.85 825 805 152.9
C 14 238 129962 694.24 810 816 186.0
C 7 247 40783 214.85 810 816 186.0
C 9 244 6841 32.39 810 816 186.0
D 8 195 365520 1893.91 807 788 192.6
D 12 233 71866 369.08 807 788 192.6
D 1 52 45796 233.71 807 788 192.6

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