ASTROSAT CZTI

Data Quality Report

Orbit 54897

Creation date: 2025-11-20T23:45:09.319816
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_039T06_9000006526_54897cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54897cztM0_level2_quad_clean.evt
Size (bytes)682,706,88096,071,040
Size651.1 MB 91.6 MB
Events in quadrant A10,305,945550,470
Events in quadrant B3,608,312706,110
Events in quadrant C6,045,967569,463
Events in quadrant D4,759,156586,427

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355871
B0159742
C0229531
D0191921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7127176524.764978%
B71262303.227617%
C712794813.301529%
D71273134.391750%

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 7617 7128 1704 1704 22.37% 23.91%
B 7616 7127 45 45 0.59% 0.63%
C 7617 7128 637 637 8.36% 8.94%
D 7617 7128 238 238 3.12% 3.34%

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 5464339 30144.72 736 720 181.2
A 12 115 1752780 9666.74 736 720 181.2
A 3 79 101409 555.54 736 720 181.2
B 5 185 299996 1801.02 765 737 166.2
B 10 247 199549 1196.5 765 737 166.2
B 5 236 38800 229.07 765 737 166.2
C 4 5 2735402 13788.85 724 717 198.3
C 14 254 137004 687.19 724 717 198.3
C 15 147 118273 592.74 724 717 198.3
D 7 70 681889 3225.75 755 724 211.2
D 10 181 263139 1242.7 755 724 211.2
D 15 94 260426 1229.86 755 724 211.2

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