ASTROSAT CZTI

Data Quality Report

Orbit 41654

Creation date: 2024-06-27T22:31:13.217719
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_116T01_9000005682_41654cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41654cztM0_level2_quad_clean.evt
Size (bytes)448,286,400100,440,000
Size427.5 MB 95.8 MB
Events in quadrant A3,416,005697,816
Events in quadrant B3,908,249676,675
Events in quadrant C4,740,651592,525
Events in quadrant D4,024,034621,519

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140792
B0163382
C0182032
D0166322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648880.123305%
B64893976.118046%
C648998515.179535%
D64892273.498228%

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 9173 6490 4 4 0.04% 0.06%
B 9174 6491 246 246 2.68% 3.79%
C 9174 6491 583 583 6.35% 8.98%
D 9174 6491 211 211 2.30% 3.25%

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 607605 4133.07 713 697 146.8
A 13 248 29905 198.91 713 697 146.8
A 2 79 9321 58.73 713 697 146.8
B 0 186 853144 6320.34 694 675 134.9
B 5 255 188138 1389.88 694 675 134.9
B 0 190 69120 507.46 694 675 134.9
C 14 254 1792315 12404.68 615 618 144.4
C 0 10 319671 2208.94 615 618 144.4
C 15 214 227395 1570.07 615 618 144.4
D 13 249 943418 5559.47 688 668 169.6
D 2 249 170281 1000.22 688 668 169.6
D 1 47 117907 691.37 688 668 169.6

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