ASTROSAT CZTI

Data Quality Report

Orbit 55363

Creation date: 2025-12-22T08:06:12.403740
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/AS1A14_009T01_9000006534_55363cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55363cztM0_level2_quad_clean.evt
Size (bytes)552,490,560121,017,600
Size526.9 MB 115.4 MB
Events in quadrant A4,241,087793,452
Events in quadrant B4,228,384838,030
Events in quadrant C6,024,135750,028
Events in quadrant D5,308,977702,283

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188092
B0187361
C0238101
D0219191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8358710.849486%
B83591922.296925%
C83592002.392631%
D83593183.804283%

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 8733 8359 40 40 0.46% 0.48%
B 8734 8360 96 96 1.10% 1.15%
C 8734 8360 175 175 2.00% 2.09%
D 8734 8360 249 249 2.85% 2.98%

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 0 8 247378 1098.26 902 878 224.4
A 12 115 236471 1049.66 902 878 224.4
A 3 78 58672 257.49 902 878 224.4
B 5 185 428520 2234.52 890 854 191.4
B 0 199 110120 570.91 890 854 191.4
B 10 247 62063 319.81 890 854 191.4
C 9 38 1755257 7308.11 881 873 240.1
C 12 252 184609 765.38 881 873 240.1
C 12 249 172761 716.02 881 873 240.1
D 2 249 530767 2148.66 872 834 246.6
D 11 129 396058 1602.47 872 834 246.6
D 15 107 220617 891.13 872 834 246.6

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