ASTROSAT CZTI

Data Quality Report

Orbit 52880

Creation date: 2025-07-16T12:29:18.891613
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/AS1C09_011T08_9000006482_52880cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52880cztM0_level2_quad_clean.evt
Size (bytes)1,041,641,28085,371,840
Size993.4 MB 81.4 MB
Events in quadrant A18,813,78051,478
Events in quadrant B6,260,171721,564
Events in quadrant C6,504,973620,313
Events in quadrant D6,376,234649,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0609450
B0242270
C0251060
D0244741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7786731393.924994%
B77867319.388646%
C7786101012.972001%
D77854826.191394%

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 7785 7785 7133 7133 91.62% 91.62%
B 7786 7786 560 560 7.19% 7.19%
C 7786 7786 786 786 10.10% 10.10%
D 7785 7785 457 457 5.87% 5.87%

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 9 191 17100737 214380.71 311 305 79.8
A 0 8 163190 2042.02 311 305 79.8
A 15 174 62088 774.55 311 305 79.8
B 8 3 2117186 12673.38 786 758 167.0
B 10 44 243057 1450.91 786 758 167.0
B 4 81 116376 692.33 786 758 167.0
C 15 224 1233420 5929.02 756 750 207.9
C 15 158 528799 2539.86 756 750 207.9
C 13 3 494893 2376.78 756 750 207.9
D 8 176 1084373 4733.74 791 755 228.9
D 3 12 455647 1987.18 791 755 228.9
D 12 17 348870 1520.73 791 755 228.9

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