ASTROSAT CZTI

Data Quality Report

Orbit 20190718_A05_088T03_9000003042_level2

Creation date: 2019-07-20T19:14:51.642522
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_088T03_9000003042cztM0_level2_bc.evt modeM0/AS1A05_088T03_9000003042cztM0_level2_quad_clean.evt
Size (bytes)1,774,909,440673,905,600
Size1.7 GB 642.7 MB
Events in quadrant A10,663,0344,365,083
Events in quadrant B11,269,7754,364,266
Events in quadrant C10,322,5824,249,266
Events in quadrant D18,126,9904,042,471

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010060
B010060
C010060
D010060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01034870
B01059750
C01035010
D01324440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494234430.896344%
B494235811.175566%
C494236561.327317%
D4942324644.985533%

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 58498 49424 5 5 0.01% 0.01%
B 58498 49425 4 4 0.01% 0.01%
C 58498 49425 0 0 0.00% 0.00%
D 58498 49420 254 254 0.43% 0.51%

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 6 16 114646 191.87 2716 2669 583.6
A 15 174 60528 99.14 2716 2669 583.6
A 8 205 28310 43.94 2716 2669 583.6
B 7 220 280364 549.96 2719 2655 505.0
B 0 219 109020 210.64 2719 2655 505.0
B 0 197 106562 205.77 2719 2655 505.0
C 3 9 66134 102.81 2639 2631 617.7
C 10 91 47191 72.14 2639 2631 617.7
C 7 220 23114 33.16 2639 2631 617.7
D 5 222 3741437 6166.1 2629 2539 606.4
D 1 52 2405324 3962.61 2629 2539 606.4
D 1 20 621430 1020.66 2629 2539 606.4

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