ASTROSAT CZTI

Data Quality Report

Orbit 41348

Creation date: 2024-06-27T22:27:58.855950
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T05_105T01_9000005658_41348cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41348cztM0_level2_quad_clean.evt
Size (bytes)1,543,328,640376,490,880
Size1.4 GB 359.0 MB
Events in quadrant A12,238,1542,600,418
Events in quadrant B11,456,6512,651,950
Events in quadrant C13,124,2062,444,973
Events in quadrant D18,567,2772,151,448

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494806
B0492405
C0529325
D0708975

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A225331120.497049%
B225333581.588781%
C225337053.128745%
D2253320829.239782%

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 32276 22537 80 80 0.25% 0.35%
B 32276 22538 300 300 0.93% 1.33%
C 32276 22538 699 699 2.17% 3.10%
D 32276 22535 2035 2035 6.30% 9.03%

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 10 83 1896364 3707.67 2522 2478 510.8
A 13 248 285703 554.47 2522 2478 510.8
A 2 79 141639 272.44 2522 2478 510.8
B 5 255 636550 1333.43 2488 2422 475.6
B 15 35 433369 906.19 2488 2422 475.6
B 0 190 375230 783.93 2488 2422 475.6
C 0 10 2044259 3694.32 2390 2404 552.7
C 15 214 941758 1699.57 2390 2404 552.7
C 7 220 724317 1306.15 2390 2404 552.7
D 13 249 3809518 6634.04 2342 2276 573.9
D 1 47 3278648 5709.01 2342 2276 573.9
D 5 222 1282834 2231.35 2342 2276 573.9

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