ASTROSAT CZTI

Data Quality Report

Orbit 20160315_T01_103T01_9000000374_level2

Creation date: 2017-10-27T06:34:49.694890
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/AS1T01_103T01_9000000374cztM0_level2.evt modeM0/AS1T01_103T01_9000000374cztM0_level2_quad_clean.evt
Size (bytes)8,312,495,0401,425,792,960
Size7.7 GB 1.3 GB
Events in quadrant A54,686,0908,827,756
Events in quadrant B56,319,3438,957,623
Events in quadrant C55,931,4518,813,772
Events in quadrant D76,546,7238,200,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024900
B024900
C024900
D024900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02528410
B02557460
C02549190
D03147660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12234318161.484351%
B12234421301.740993%
C12234316991.388719%
D12234484146.877329%

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 142742 122369 20 20 0.01% 0.02%
B 142742 122369 196 196 0.14% 0.16%
C 142742 122369 266 266 0.19% 0.22%
D 142742 122368 5338 5338 3.74% 4.36%

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 0 128 968950 339.8 13871 13566 2811.6
A 15 236 308332 104.84 13871 13566 2811.6
A 12 194 152957 49.58 13871 13566 2811.6
B 6 36 1003694 373.01 14031 13670 2654.1
B 3 220 367859 133.45 14031 13670 2654.1
B 7 205 232308 82.38 14031 13670 2654.1
C 2 53 1071296 337.98 13491 13499 3129.7
C 14 223 578069 180.39 13491 13499 3129.7
C 10 82 442869 137.19 13491 13499 3129.7
D 11 130 19715891 6490.58 12910 12589 3035.7
D 11 131 4356083 1430.81 12910 12589 3035.7
D 2 184 1055616 343.59 12910 12589 3035.7

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