ASTROSAT CZTI

Data Quality Report

Orbit 20190306_A05_072T02_9000002762_level2

Creation date: 2019-04-05T11:02:50.358508
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/AS1A05_072T02_9000002762cztM0_level2_bc.evt modeM0/AS1A05_072T02_9000002762cztM0_level2_quad_clean.evt
Size (bytes)1,619,400,960610,997,760
Size1.5 GB 582.7 MB
Events in quadrant A9,787,1273,868,154
Events in quadrant B9,903,8944,002,418
Events in quadrant C11,013,2013,856,441
Events in quadrant D15,303,7413,725,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09060
B09060
C09060
D09060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0947500
B0952500
C01018520
D01147460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A445044070.914525%
B445054771.071790%
C4450513052.932255%
D4450517773.992810%

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 57498 44505 6 6 0.01% 0.01%
B 57498 44503 3 3 0.01% 0.01%
C 57498 44502 30 30 0.05% 0.07%
D 57498 44503 268 268 0.47% 0.60%

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 4 2 84780 156.41 2464 2421 526.6
A 13 254 68321 125.15 2464 2421 526.6
A 9 143 62765 114.6 2464 2421 526.6
B 0 230 58838 121.06 2523 2463 465.7
B 0 198 56860 116.81 2523 2463 465.7
B 0 190 51695 105.72 2523 2463 465.7
C 4 254 1525899 2702.48 2432 2429 563.7
C 9 54 122162 212.39 2432 2429 563.7
C 3 233 14763 21.88 2432 2429 563.7
D 1 52 3491065 6305.35 2439 2360 553.3
D 7 238 1898833 3427.61 2439 2360 553.3
D 5 222 307456 551.42 2439 2360 553.3

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