ASTROSAT CZTI

Data Quality Report

Orbit 18351

Creation date: 2024-06-27T17:48:41.748765
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/AS1A06_006T01_9000002720_18351cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18351cztM0_level2_quad_clean.evt
Size (bytes)467,288,64083,632,320
Size445.6 MB 79.8 MB
Events in quadrant A3,250,063521,892
Events in quadrant B3,493,513533,925
Events in quadrant C3,327,056512,846
Events in quadrant D3,629,104499,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137863
B0145142
C0139122
D0149712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6654230.345657%
B6654520.781485%
C6654530.796513%
D6654280.420800%

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 7824 6655 1 1 0.01% 0.02%
B 7824 6655 1 1 0.01% 0.02%
C 7824 6655 7 7 0.09% 0.11%
D 7824 6655 17 17 0.22% 0.26%

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 15 174 50365 296.42 832 816 167.2
A 0 226 7274 38.63 832 816 167.2
A 12 194 5975 30.86 832 816 167.2
B 7 220 97443 603.73 843 823 160.0
B 0 197 23790 143.51 843 823 160.0
B 4 216 18696 111.68 843 823 160.0
C 14 238 124906 662.05 804 811 187.4
C 3 233 40144 209.84 804 811 187.4
C 0 207 28778 149.2 804 811 187.4
D 14 34 199064 1007.71 806 783 196.8
D 11 176 81092 408.15 806 783 196.8
D 1 52 79510 400.11 806 783 196.8

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