ASTROSAT CZTI

Data Quality Report

Orbit 52545

Creation date: 2025-06-15T15:07:03.869523
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_011T06_9000006478_52545cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52545cztM0_level2_quad_clean.evt
Size (bytes)786,686,40093,107,520
Size750.2 MB 88.8 MB
Events in quadrant A3,387,887677,963
Events in quadrant B6,692,759654,711
Events in quadrant C5,780,763611,177
Events in quadrant D12,692,318365,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156000
B0249800
C0225490
D0428260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7324140.191152%
B732580611.003413%
C73255687.754266%
D7325319443.604096%

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 7324 7324 6 6 0.08% 0.08%
B 7325 7325 554 554 7.56% 7.56%
C 7325 7325 494 494 6.74% 6.74%
D 7325 7325 2900 2900 39.59% 39.59%

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 8 249 123547 661.61 754 736 185.6
A 3 47 42580 225.42 754 736 185.6
A 6 82 38357 202.67 754 736 185.6
B 10 44 1757840 11714.14 709 685 150.0
B 10 254 765748 5100.32 709 685 150.0
B 7 0 567052 3775.71 709 685 150.0
C 15 248 1380374 7124.05 704 697 193.7
C 13 3 959656 4951.65 704 697 193.7
C 4 5 369711 1905.43 704 697 193.7
D 6 42 8075062 48331.14 586 557 167.1
D 15 93 569773 3407.12 586 557 167.1
D 8 176 469615 2807.61 586 557 167.1

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