ASTROSAT CZTI

Data Quality Report

Orbit 20200930_T03_236T01_9000003908_level2

Creation date: 2021-01-07T22:49:55.776569
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/AS1T03_236T01_9000003908cztM0_level2_bc.evt modeM0/AS1T03_236T01_9000003908cztM0_level2_quad_clean.evt
Size (bytes)2,036,370,240605,076,480
Size1.9 GB 577.0 MB
Events in quadrant A13,633,8293,809,261
Events in quadrant B15,380,7933,904,619
Events in quadrant C9,509,0213,948,192
Events in quadrant D20,205,7933,699,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01093160
B01113600
C0929500
D01296310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0960
C0960
D0960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08800
B08800
C08800
D08800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4320112822.967524%
B4320125425.884123%
C432017111.645795%
D4320126586.152635%

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 56590 43202 0 0 0.00% 0.00%
B 56590 43202 714 714 1.26% 1.65%
C 56590 43201 0 0 0.00% 0.00%
D 56590 43201 451 451 0.80% 1.04%

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 14 235 4052714 7904.83 2415 2377 512.4
A 6 16 123960 237.29 2415 2377 512.4
A 12 189 121095 231.7 2415 2377 512.4
B 0 189 5014509 11042.86 2445 2397 453.9
B 3 112 788539 1732.05 2445 2397 453.9
B 0 219 85582 183.28 2445 2397 453.9
C 15 208 104162 178.61 2435 2429 569.6
C 2 16 24623 38.97 2435 2429 569.6
C 4 224 16730 25.11 2435 2429 569.6
D 1 52 10039191 18520.05 2386 2314 541.9
D 2 250 863373 1588.83 2386 2314 541.9
D 2 234 176541 321.48 2386 2314 541.9

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