ASTROSAT CZTI

Data Quality Report

Orbit 20191017_A07_100T03_9000003242_level2

Creation date: 2019-10-22T13:33:08.220454
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_100T03_9000003242cztM0_level2_bc.evt modeM0/AS1A07_100T03_9000003242cztM0_level2_quad_clean.evt
Size (bytes)6,378,992,6402,794,775,040
Size5.9 GB 2.6 GB
Events in quadrant A38,610,33118,915,733
Events in quadrant B44,424,16319,008,859
Events in quadrant C31,419,13418,807,793
Events in quadrant D68,588,05317,706,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03416260
B03497540
C03139560
D04358070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030260
B030260
C030260
D030260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14918036272.431291%
B14918057753.871162%
C14918023031.543773%
D149180109967.370961%

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 172790 149159 60 60 0.03% 0.04%
B 172790 149156 2707 2707 1.57% 1.81%
C 172790 149160 4 4 0.00% 0.00%
D 172790 149157 2117 2117 1.23% 1.42%

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 15 236 6425330 3699.66 7999 7869 1734.6
A 4 2 885924 506.2 7999 7869 1734.6
A 5 16 253668 141.7 7999 7869 1734.6
B 0 85 9060836 6059.9 8005 7822 1493.9
B 3 64 2745450 1832.51 8005 7822 1493.9
B 0 197 471924 310.66 8005 7822 1493.9
C 10 22 1069308 574.58 7861 7838 1847.4
C 5 4 68355 32.76 7861 7838 1847.4
C 13 61 45244 20.25 7861 7838 1847.4
D 12 235 16335523 9148.99 7773 7541 1784.7
D 1 52 10155268 5686.04 7773 7541 1784.7
D 7 238 8524943 4772.52 7773 7541 1784.7

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