ASTROSAT CZTI

Data Quality Report

Orbit 20180402_A04_193T01_9000002004_level2

Creation date: 2018-04-04T12:37:59.871456
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_193T01_9000002004cztM0_level2_bc.evt modeM0/AS1A04_193T01_9000002004cztM0_level2_quad_clean.evt
Size (bytes)2,785,227,8401,288,503,360
Size2.6 GB 1.2 GB
Events in quadrant A14,174,7118,839,713
Events in quadrant B19,738,3228,765,565
Events in quadrant C15,543,6218,759,211
Events in quadrant D30,293,6908,035,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013740
B013740
C013740
D013740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01393290
B01609680
C01405960
D02039590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A675145980.885742%
B6751427684.099890%
C675144500.666528%
D67514732310.846639%

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 78629 67512 3 3 0.00% 0.00%
B 78629 67509 100 100 0.13% 0.15%
C 78629 67510 2 2 0.00% 0.00%
D 78629 67509 1041 1041 1.32% 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 1 162 172666 220.3 3545 3488 768.0
A 2 250 168625 215.03 3545 3488 768.0
A 15 233 70350 87.06 3545 3488 768.0
B 0 182 3866501 5868.25 3505 3417 658.3
B 3 64 611842 924.23 3505 3417 658.3
B 0 85 586459 885.68 3505 3417 658.3
C 3 233 1711113 2234.76 3462 3433 764.1
C 0 207 211801 272.68 3462 3433 764.1
C 14 234 29730 34.41 3462 3433 764.1
D 13 122 9777566 12306.27 3357 3249 794.3
D 5 222 2304014 2896.76 3357 3249 794.3
D 1 20 2239956 2816.11 3357 3249 794.3

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