ASTROSAT CZTI

Data Quality Report

Orbit 20180113_A04_023T01_9000001842_level2

Creation date: 2018-07-31T16:30:13.329726
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/AS1A04_023T01_9000001842cztM0_level2_bc.evt modeM0/AS1A04_023T01_9000001842cztM0_level2_quad_clean.evt
Size (bytes)826,591,680277,896,960
Size788.3 MB 265.0 MB
Events in quadrant A5,838,0051,720,409
Events in quadrant B6,329,0161,733,657
Events in quadrant C4,252,8121,741,169
Events in quadrant D7,072,1771,670,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530410
B0543720
C0464090
D0554970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04600
B04600
C04600
D04600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A225216592.926158%
B2252110904.839927%
C225213491.549665%
D225217283.232539%

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 24002 22521 4 4 0.02% 0.02%
B 24002 22519 22 22 0.09% 0.10%
C 24002 22522 0 0 0.00% 0.00%
D 24002 22518 46 46 0.19% 0.20%

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 14 237 585602 2423.92 1081 1054 241.2
A 13 251 430429 1780.47 1081 1054 241.2
A 12 189 280351 1158.15 1081 1054 241.2
B 4 239 1012241 4781.01 1079 1046 211.5
B 3 64 621104 2931.68 1079 1046 211.5
B 3 209 151823 712.88 1079 1046 211.5
C 15 208 20754 82.78 1069 1047 238.1
C 8 128 18146 71.82 1069 1047 238.1
C 14 234 13866 53.84 1069 1047 238.1
D 1 52 1910335 7469.0 1071 1026 255.6
D 7 80 176387 685.99 1071 1026 255.6
D 13 104 134175 520.86 1071 1026 255.6

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