ASTROSAT CZTI

Data Quality Report

Orbit 20191130_A07_054T01_9000003348_level2

Creation date: 2025-12-06T13:00:33.419378
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/AS1A07_054T01_9000003348cztM0_level2.fits modeM0/AS1A07_054T01_9000003348cztM0_level2_quad_clean.evt
Size (bytes)687,271,680768,600,000
Size655.4 MB 733.0 MB
Events in quadrant A4,225,3904,840,142
Events in quadrant B4,021,4384,780,516
Events in quadrant C4,155,0224,587,426
Events in quadrant D3,643,8524,302,058

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014200
B014200
C014200
D014200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470250
B01496550
C01458490
D01546720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A695326020.865788%
B6953210251.474141%
C695329531.370592%
D695329821.412299%

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 80837 69532 0 0 0.00% 0.00%
B 80837 69533 0 0 0.00% 0.00%
C 80836 69531 0 0 0.00% 0.00%
D 80836 69529 0 0 0.00% 0.00%

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 29 4094 11.44 1099 1040 267.0
A 7 110 3473 9.11 1099 1040 267.0
A 0 30 3168 7.97 1099 1040 267.0
B 2 9 3228 10.55 1066 1021 209.2
B 2 8 2663 7.85 1066 1021 209.2
B 3 17 2622 7.65 1066 1021 209.2
C 1 81 3279 8.12 1097 1033 276.7
C 1 80 3145 7.63 1097 1033 276.7
C 12 241 2896 6.73 1097 1033 276.7
D 10 189 2622 6.08 1040 950 274.8
D 6 231 2585 5.95 1040 950 274.8
D 7 3 2585 5.95 1040 950 274.8

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