ASTROSAT CZTI

Data Quality Report

Orbit 20170128_G05_246T03_9000000990_level2

Creation date: 2017-09-22T23:43:17.495499
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/AS1G05_246T03_9000000990cztM0_level2.evt modeM0/AS1G05_246T03_9000000990cztM0_level2_quad_clean.evt
Size (bytes)8,597,237,7601,586,211,840
Size8.0 GB 1.5 GB
Events in quadrant A57,503,7199,998,914
Events in quadrant B64,686,77710,131,092
Events in quadrant C63,536,63010,066,852
Events in quadrant D66,441,8139,517,527

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024700
B024700
C024700
D024700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02541670
B02746800
C02744610
D02857500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12159416241.335592%
B12160235152.890577%
C1215909170.754174%
D12159532722.690900%

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 140683 121643 183 183 0.13% 0.15%
B 140683 121638 2033 2033 1.45% 1.67%
C 140683 121634 65 65 0.05% 0.05%
D 140683 121629 1878 1878 1.33% 1.54%

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 8 15 1289237 446.66 14216 13935 2855.2
A 14 111 562905 192.27 14216 13935 2855.2
A 0 23 418096 141.55 14216 13935 2855.2
B 10 16 6186783 2321.94 14210 13878 2658.5
B 0 214 1402566 522.35 14210 13878 2658.5
B 4 81 770396 284.56 14210 13878 2658.5
C 9 68 9116815 2856.35 13852 13881 3186.9
C 9 243 197126 57.5 13852 13881 3186.9
C 12 4 115647 31.93 13852 13881 3186.9
D 2 216 4297643 1284.06 13685 13250 3336.6
D 2 14 3295782 983.8 13685 13250 3336.6
D 2 33 1821021 541.8 13685 13250 3336.6

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