ASTROSAT CZTI

Data Quality Report

Orbit 20180617_G08_057T09_9000002174_level2

Creation date: 2018-06-30T11:27:39.447671
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/AS1G08_057T09_9000002174cztM0_level2_bc.evt modeM0/AS1G08_057T09_9000002174cztM0_level2_quad_clean.evt
Size (bytes)2,627,873,2801,020,625,920
Size2.4 GB 973.3 MB
Events in quadrant A16,354,9486,606,189
Events in quadrant B16,512,6656,486,984
Events in quadrant C25,755,3606,404,494
Events in quadrant D15,988,4816,411,264

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01536400
B01561200
C01954150
D01528100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014880
B014880
C014880
D014880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A730277020.961288%
B7302711831.619949%
C730278031.099593%
D730275450.746299%

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 84773 73022 1 1 0.00% 0.00%
B 84773 73019 193 193 0.23% 0.26%
C 84773 73022 1 1 0.00% 0.00%
D 84773 73023 10 10 0.01% 0.01%

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 12 189 569781 680.44 3876 3805 831.8
A 8 15 493229 588.4 3876 3805 831.8
A 9 143 125876 146.76 3876 3805 831.8
B 10 16 903796 1259.99 3832 3741 714.3
B 0 214 200311 275.18 3832 3741 714.3
B 0 205 159272 217.73 3832 3741 714.3
C 3 233 10886842 13100.26 3760 3713 830.8
C 3 234 81381 93.49 3760 3713 830.8
C 14 234 31818 33.83 3760 3713 830.8
D 12 110 405573 449.81 3828 3727 893.4
D 2 234 270234 298.32 3828 3727 893.4
D 2 120 165589 181.18 3828 3727 893.4

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