ASTROSAT CZTI

Data Quality Report

Orbit 49849

Creation date: 2024-12-16T02:23:26.187264
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/AS1A13_037T01_9000006440_49849cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49849cztM0_level2_quad_clean.evt
Size (bytes)1,576,549,44076,947,840
Size1.5 GB 73.4 MB
Events in quadrant A13,320,539645,877
Events in quadrant B5,482,762940,199
Events in quadrant C19,366,29483,848
Events in quadrant D19,465,2809,262

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0461242
B0226112
C0639902
D0642447

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9369272229.053261%
B93702132.273212%
C9370859791.750267%
D9369928799.124773%

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 10724 9371 2263 2263 21.10% 24.15%
B 10725 9372 110 110 1.03% 1.17%
C 10724 9369 5490 5490 51.19% 58.60%
D 10723 9368 5546 5546 51.72% 59.20%

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 4 2976783 13169.77 891 870 226.0
A 3 84 2236203 9892.36 891 870 226.0
A 3 14 1168112 5165.58 891 870 226.0
B 0 229 531410 2486.76 1007 972 213.3
B 4 206 493470 2308.89 1007 972 213.3
B 10 28 147288 685.95 1007 972 213.3
C 1 44 3524381 32879.9 327 323 107.2
C 15 197 2827003 26373.28 327 323 107.2
C 15 164 1914330 17857.92 327 323 107.2
D 8 129 6956541 71232.11 269 256 97.7
D 7 61 3858624 39509.55 269 256 97.7
D 15 185 1355707 13879.77 269 256 97.7

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