ASTROSAT CZTI

Data Quality Report

Orbit 20160824_G05_118T01_9000000622_level2

Creation date: 2018-05-17T13:57:22.878046
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_118T01_9000000622cztM0_level2.evt modeM0/AS1G05_118T01_9000000622cztM0_level2_quad_clean.evt
Size (bytes)8,755,827,8401,520,369,280
Size8.2 GB 1.4 GB
Events in quadrant A53,576,2809,745,494
Events in quadrant B54,998,5349,888,553
Events in quadrant C61,737,1389,709,991
Events in quadrant D87,398,1349,116,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02367810
B02397000
C02632590
D03366340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022560
B022560
C022560
D022560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11074118381.659729%
B11074316091.452914%
C11074241803.774539%
D110740102169.225212%

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 129719 110761 616 616 0.47% 0.56%
B 129719 110763 441 441 0.34% 0.40%
C 129719 110762 3215 3215 2.48% 2.90%
D 129719 110757 8371 8371 6.45% 7.56%

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 0 31 4305812 1705.47 12563 12288 2517.5
A 13 251 266883 101.13 12563 12288 2517.5
A 15 174 234307 88.19 12563 12288 2517.5
B 10 16 2180384 915.37 12687 12397 2368.4
B 8 3 752496 312.49 12687 12397 2368.4
B 15 204 590535 244.1 12687 12397 2368.4
C 9 247 13798173 4954.49 12154 12192 2782.5
C 1 16 330337 114.34 12154 12192 2782.5
C 13 61 99804 31.49 12154 12192 2782.5
D 2 33 11050401 3838.56 11911 11546 2875.8
D 2 63 9710747 3372.72 11911 11546 2875.8
D 1 7 9256099 3214.62 11911 11546 2875.8

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