ASTROSAT CZTI

Data Quality Report

Orbit 59385

Creation date: 2026-09-18T21:15:15.171036
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_033T01_9000006608_59385cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59385cztM0_level2_quad_clean.evt
Size (bytes)400,311,360103,596,480
Size381.8 MB 98.8 MB
Events in quadrant A3,126,331684,037
Events in quadrant B3,796,971735,775
Events in quadrant C3,182,354653,143
Events in quadrant D4,201,075606,110

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137482
B0156392
C0140212
D0168434

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65731011.536589%
B65731832.784117%
C65731111.688727%
D65721562.373707%

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 7733 6573 7 7 0.09% 0.11%
B 7733 6573 50 50 0.65% 0.76%
C 7733 6573 30 30 0.39% 0.46%
D 7732 6572 89 89 1.15% 1.35%

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 3 14 55655 291.93 769 751 188.1
A 3 245 35643 185.53 769 751 188.1
A 14 238 23368 120.26 769 751 188.1
B 5 185 463801 2894.73 756 726 160.0
B 4 236 66956 414.01 756 726 160.0
B 5 236 63708 393.71 756 726 160.0
C 6 223 150160 727.59 747 744 205.4
C 3 242 40873 195.41 747 744 205.4
C 4 5 27742 131.47 747 744 205.4
D 3 12 782988 3715.91 746 714 210.5
D 12 110 172262 814.88 746 714 210.5
D 12 248 72889 342.84 746 714 210.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct