ASTROSAT CZTI

Data Quality Report

Orbit 20190114_A05_025T04_9000002652_level2

Creation date: 2019-01-17T17:09:40.788012
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_025T04_9000002652cztM0_level2.evt modeM0/AS1A05_025T04_9000002652cztM0_level2_quad_clean.evt
Size (bytes)1,855,941,120328,510,080
Size1.7 GB 313.3 MB
Events in quadrant A13,005,3732,059,996
Events in quadrant B13,366,1852,117,055
Events in quadrant C13,166,7672,032,695
Events in quadrant D14,916,5081,954,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05320
C05320
D05320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0554400
B0558240
C0545090
D0619080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259462971.144685%
B259463031.167810%
C259462661.025206%
D259465171.992600%

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 32131 25952 173 173 0.54% 0.67%
B 32131 25952 76 76 0.24% 0.29%
C 32131 25952 0 0 0.00% 0.00%
D 32131 25952 375 375 1.17% 1.44%

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 699907 1093.74 3204 3144 637.0
A 0 226 27679 38.51 3204 3144 637.0
A 3 137 23986 32.72 3204 3144 637.0
B 10 245 451569 745.83 3237 3161 601.2
B 15 222 109575 177.0 3237 3161 601.2
B 12 111 72319 115.03 3237 3161 601.2
C 14 238 489457 675.94 3123 3151 719.4
C 13 62 395211 544.95 3123 3151 719.4
C 5 218 98654 132.74 3123 3151 719.4
D 7 238 2581291 3154.73 3086 3031 817.3
D 10 70 220082 265.58 3086 3031 817.3
D 12 110 136729 163.59 3086 3031 817.3

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