ASTROSAT CZTI

Data Quality Report

Orbit 20180825_G08_030T01_9000002326_level2

Creation date: 2018-08-27T09:50:58.058040
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/AS1G08_030T01_9000002326cztM0_level2_bc.evt modeM0/AS1G08_030T01_9000002326cztM0_level2_quad_clean.evt
Size (bytes)830,721,600301,046,400
Size792.2 MB 287.1 MB
Events in quadrant A5,007,6091,905,176
Events in quadrant B5,263,5821,932,819
Events in quadrant C5,779,8621,847,113
Events in quadrant D7,455,8021,771,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498970
B0506870
C0527450
D0579480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241491320.546606%
B241491790.741232%
C241492571.064226%
D241496022.492857%

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 29381 24150 2 2 0.01% 0.01%
B 29381 24150 4 4 0.01% 0.02%
C 29381 24150 0 0 0.00% 0.00%
D 29381 24152 207 207 0.70% 0.86%

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 15 239 143560 516.0 1255 1231 275.8
A 9 143 21925 75.02 1255 1231 275.8
A 13 248 14866 49.43 1255 1231 275.8
B 3 209 63206 254.51 1273 1240 243.5
B 5 236 54632 219.3 1273 1240 243.5
B 4 216 51923 208.17 1273 1240 243.5
C 3 233 1016024 3525.89 1220 1216 287.8
C 10 22 21755 71.36 1220 1216 287.8
C 9 54 17733 57.39 1220 1216 287.8
D 1 52 2166394 7020.94 1214 1181 308.4
D 12 110 397784 1286.03 1214 1181 308.4
D 2 234 96172 308.02 1214 1181 308.4

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