ASTROSAT CZTI

Data Quality Report

Orbit 20171111_A04_107T01_9000001684_level2

Creation date: 2018-01-08T23:06:40.853320
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_107T01_9000001684cztM0_level2_bc.evt modeM0/AS1A04_107T01_9000001684cztM0_level2_quad_clean.evt
Size (bytes)4,038,586,560977,160,960
Size3.8 GB 931.9 MB
Events in quadrant A47,919,1685,799,908
Events in quadrant B29,676,4276,175,223
Events in quadrant C14,766,9776,387,017
Events in quadrant D24,851,7126,094,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015280
B015280
C015280
D015280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02927990
B02177010
C01533480
D01830420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A748861383118.469407%
B7488665898.798707%
C748864140.552840%
D7488617962.398312%

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 86547 74878 1475 1475 1.70% 1.97%
B 86547 74887 199 199 0.23% 0.27%
C 86547 74886 1 1 0.00% 0.00%
D 86547 74885 299 299 0.35% 0.40%

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 5 33145144 43142.62 3519 3460 768.2
A 9 143 285279 366.86 3519 3460 768.2
A 15 223 248269 318.68 3519 3460 768.2
B 4 239 6723128 9621.18 3673 3582 698.4
B 4 81 3743551 5354.96 3673 3582 698.4
B 3 64 2432804 3478.21 3673 3582 698.4
C 3 9 85204 97.63 3732 3672 835.1
C 12 4 48622 53.83 3732 3672 835.1
C 14 234 23917 24.24 3732 3672 835.1
D 1 52 5061704 5692.4 3770 3651 888.6
D 2 120 1109394 1244.42 3770 3651 888.6
D 13 152 886352 993.4 3770 3651 888.6

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