ASTROSAT CZTI

Data Quality Report

Orbit 20181127_A05_056T01_9000002540_level2

Creation date: 2018-11-29T17:59:24.265663
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/AS1A05_056T01_9000002540cztM0_level2_bc.evt modeM0/AS1A05_056T01_9000002540cztM0_level2_quad_clean.evt
Size (bytes)3,766,631,0401,287,161,280
Size3.5 GB 1.2 GB
Events in quadrant A21,542,2698,177,026
Events in quadrant B21,334,4268,366,043
Events in quadrant C36,449,6487,750,108
Events in quadrant D27,793,1017,696,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020820
B020820
C020820
D020820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02134090
B02125000
C02777790
D02346950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10210213691.340816%
B10210215161.484790%
C10210238243.745274%
D10210228672.807976%

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 119643 102103 22 22 0.02% 0.02%
B 119643 102100 1 1 0.00% 0.00%
C 119643 102095 5 5 0.00% 0.00%
D 119643 102102 327 327 0.27% 0.32%

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 4 2 495377 422.43 5359 5256 1160.2
A 12 189 363415 308.69 5359 5256 1160.2
A 12 96 165591 138.19 5359 5256 1160.2
B 0 229 210976 201.5 5464 5321 1020.6
B 3 209 79245 72.43 5464 5321 1020.6
B 4 173 59580 53.16 5464 5321 1020.6
C 3 233 16430422 13827.71 5132 5099 1187.9
C 5 112 106638 85.48 5132 5099 1187.9
C 7 247 69796 54.47 5132 5099 1187.9
D 5 222 4967099 4173.65 5235 5061 1188.9
D 13 232 2160026 1812.58 5235 5061 1188.9
D 2 234 359432 298.07 5235 5061 1188.9

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