ASTROSAT CZTI

Data Quality Report

Orbit 20181126_A05_004T03_9000002538_level2

Creation date: 2018-11-28T09:58:07.363316
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_004T03_9000002538cztM0_level2_bc.evt modeM0/AS1A05_004T03_9000002538cztM0_level2_quad_clean.evt
Size (bytes)2,350,543,680898,585,920
Size2.2 GB 857.0 MB
Events in quadrant A14,144,2895,726,595
Events in quadrant B15,447,8745,804,236
Events in quadrant C16,409,4635,529,170
Events in quadrant D20,402,5285,348,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01443060
B01481510
C01511310
D01657770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014340
B014340
C014340
D014340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701327511.070838%
B701329201.311812%
C7013111701.668306%
D7013218022.569440%

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 81502 70132 4 4 0.00% 0.01%
B 81502 70128 4 4 0.00% 0.01%
C 81502 70131 29 29 0.04% 0.04%
D 81502 70132 215 215 0.26% 0.31%

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 228607 283.66 3618 3544 793.4
A 12 189 47184 55.0 3618 3544 793.4
A 0 226 23988 25.77 3618 3544 793.4
B 3 209 292465 420.75 3661 3572 686.6
B 0 197 249109 357.61 3661 3572 686.6
B 0 219 170441 243.03 3661 3572 686.6
C 3 233 2642192 3217.23 3499 3479 820.2
C 9 160 105671 124.6 3499 3479 820.2
C 9 176 80743 94.2 3499 3479 820.2
D 5 222 4225531 5166.29 3531 3405 817.2
D 12 32 647803 788.5 3531 3405 817.2
D 10 70 525583 638.95 3531 3405 817.2

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