ASTROSAT CZTI

Data Quality Report

Orbit 14577

Creation date: 2024-06-27T16:57:03.521456
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/AS1A04_089T01_9000002146_14577cztM0_level2.evt modeM0/AS1A04_089T01_9000002146_14577cztM0_level2_quad_clean.evt
Size (bytes)582,759,360101,859,840
Size555.8 MB 97.1 MB
Events in quadrant A5,988,514653,329
Events in quadrant B3,372,287686,113
Events in quadrant C3,751,083666,535
Events in quadrant D4,108,472636,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224473
B0141182
C0150612
D0163482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63391993.139296%
B6339791.246253%
C6339540.851869%
D63392804.417100%

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 7505 6341 15 15 0.20% 0.24%
B 7505 6341 7 7 0.09% 0.11%
C 7505 6341 0 0 0.00% 0.00%
D 7505 6341 246 246 3.28% 3.88%

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 23 2457830 15206.75 797 782 161.6
A 8 15 173794 1070.78 797 782 161.6
A 0 226 152618 939.72 797 782 161.6
B 0 219 50819 319.98 814 795 156.3
B 10 16 37255 233.22 814 795 156.3
B 4 48 22879 141.26 814 795 156.3
C 3 233 600945 3248.59 796 802 184.7
C 14 220 40954 217.34 796 802 184.7
C 13 61 5702 26.52 796 802 184.7
D 10 199 785596 4115.77 787 766 190.7
D 12 110 275608 1441.31 787 766 190.7
D 2 152 23291 118.12 787 766 190.7

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