ASTROSAT CZTI

Data Quality Report

Orbit 46194

Creation date: 2024-06-27T23:20:13.377923
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_093T40_9000006182_46194cztM0_level2.fits modeM0/AS1A13_093T40_9000006182_46194cztM0_level2_quad_clean.evt
Size (bytes)779,987,520159,883,200
Size743.9 MB 152.5 MB
Events in quadrant A9,291,1851,069,023
Events in quadrant B5,353,9071,104,403
Events in quadrant C4,519,4141,068,727
Events in quadrant D8,917,097890,577

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335262
B0223362
C0210822
D0335742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A102203253.180039%
B102202222.172211%
C102201101.076321%
D10220117211.467710%

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 11695 10220 7 7 0.06% 0.07%
B 11695 10221 68 68 0.58% 0.67%
C 11695 10220 16 16 0.14% 0.16%
D 11695 10220 935 935 7.99% 9.15%

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 10 83 4540859 19531.16 1128 1100 232.4
A 0 247 266185 1140.46 1128 1100 232.4
A 9 191 54407 229.34 1128 1100 232.4
B 3 112 512284 2327.29 1124 1086 219.7
B 5 172 340487 1545.16 1124 1086 219.7
B 4 171 32415 142.63 1124 1086 219.7
C 12 2 125998 480.47 1110 1111 259.9
C 11 16 31882 118.38 1110 1111 259.9
C 14 254 27053 99.81 1110 1111 259.9
D 1 52 2249267 8339.34 1062 1023 269.6
D 13 249 877437 3250.85 1062 1023 269.6
D 2 249 677516 2509.29 1062 1023 269.6

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