ASTROSAT CZTI

Data Quality Report

Orbit 20171217_A04_112T01_9000001778_level2

Creation date: 2017-12-19T09:35:42.213208
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_112T01_9000001778cztM0_level2_bc.evt modeM0/AS1A04_112T01_9000001778cztM0_level2_quad_clean.evt
Size (bytes)2,518,228,800919,350,720
Size2.3 GB 876.8 MB
Events in quadrant A12,307,9296,152,722
Events in quadrant B28,901,2475,954,165
Events in quadrant C10,432,6116,186,779
Events in quadrant D20,868,8885,770,300

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01219560
B01768680
C01124300
D01469410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011220
B011220
C011220
D011220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5512211662.115308%
B55122572010.376982%
C551224690.850840%
D5512230385.511411%

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 62318 55118 45 45 0.07% 0.08%
B 62318 55115 368 368 0.59% 0.67%
C 62318 55117 1 1 0.00% 0.00%
D 62318 55117 611 611 0.98% 1.11%

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 13 248 763363 1298.99 2672 2622 585.6
A 14 63 454127 770.96 2672 2622 585.6
A 1 162 435364 738.92 2672 2622 585.6
B 4 206 10969990 21650.67 2619 2547 506.6
B 4 239 3028947 5974.37 2619 2547 506.6
B 3 64 2788063 5498.84 2619 2547 506.6
C 14 234 43130 68.57 2649 2609 591.0
C 0 207 17344 24.93 2649 2609 591.0
C 13 61 16097 22.82 2649 2609 591.0
D 1 52 4234627 6875.65 2598 2500 615.5
D 7 80 2392767 3883.3 2598 2500 615.5
D 8 195 1497593 2428.97 2598 2500 615.5

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