ASTROSAT CZTI

Data Quality Report

Orbit 20170908_G07_051T02_9000001526_level2

Creation date: 2017-10-18T13:16:07.896039
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/AS1G07_051T02_9000001526cztM0_level2.evt modeM0/AS1G07_051T02_9000001526cztM0_level2_quad_clean.evt
Size (bytes)1,955,007,360263,390,400
Size1.8 GB 251.2 MB
Events in quadrant A12,544,0191,628,833
Events in quadrant B16,130,6531,625,192
Events in quadrant C12,304,1871,622,335
Events in quadrant D16,746,8681,585,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04220
B04220
C04220
D04220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0528400
B0630450
C0527720
D0645740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2202214216.452638%
B2199819538.878080%
C2209612995.878892%
D2215715707.085797%

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 42506 22283 1118 1118 2.63% 5.02%
B 42506 22245 1402 1402 3.30% 6.30%
C 42506 22326 1056 1056 2.48% 4.73%
D 42506 22255 1329 1329 3.13% 5.97%

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 3 80 159720 221.67 3182 3151 706.3
A 13 251 50773 67.42 3182 3151 706.3
A 0 226 27797 34.89 3182 3151 706.3
B 4 239 3141607 4363.85 3180 3116 719.2
B 0 214 360849 497.4 3180 3116 719.2
B 11 51 236309 324.24 3180 3116 719.2
C 15 48 58554 65.09 3127 3155 851.1
C 14 234 56397 62.56 3127 3155 851.1
C 13 61 21631 21.71 3127 3155 851.1
D 2 16 1893541 2185.58 3155 3107 865.0
D 8 195 1585335 1829.25 3155 3107 865.0
D 1 52 558322 641.9 3155 3107 865.0

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