ASTROSAT CZTI

Data Quality Report

Orbit 20190208_T03_003T01_9000002712_level2

Creation date: 2019-02-11T10:27:12.432938
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/AS1T03_003T01_9000002712cztM0_level2_bc.evt modeM0/AS1T03_003T01_9000002712cztM0_level2_quad_clean.evt
Size (bytes)3,267,982,0801,020,631,680
Size3.0 GB 973.4 MB
Events in quadrant A19,642,6926,442,232
Events in quadrant B18,104,1796,541,942
Events in quadrant C18,992,8466,276,836
Events in quadrant D36,654,5526,039,009

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01814670
B01732890
C01797750
D02436570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016700
B016700
C016700
D016680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8190019332.360195%
B8189911471.400506%
C8183522242.717664%
D8183656816.941933%

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 94528 81972 46 46 0.05% 0.06%
B 94528 81972 4 4 0.00% 0.00%
C 94528 81944 46 46 0.05% 0.06%
D 94527 81940 657 657 0.70% 0.80%

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 2825306 3024.77 4340 4261 932.6
A 4 2 46505 45.29 4340 4261 932.6
A 13 210 45163 43.86 4340 4261 932.6
B 7 220 425811 512.93 4374 4267 821.8
B 4 171 155277 183.75 4374 4267 821.8
B 0 189 128951 151.71 4374 4267 821.8
C 4 254 2728063 2813.51 4159 4132 968.2
C 3 233 213552 216.31 4159 4132 968.2
C 0 207 39281 36.3 4159 4132 968.2
D 7 238 9314812 9612.06 4187 4042 968.7
D 5 222 6270930 6469.68 4187 4042 968.7
D 1 52 3358774 3463.29 4187 4042 968.7

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