ASTROSAT CZTI

Data Quality Report

Orbit 57747

Creation date: 2026-05-31T17:17:44.761733
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_083T16_9000006580_57747cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57747cztM0_level2_quad_clean.evt
Size (bytes)498,139,200107,821,440
Size475.1 MB 102.8 MB
Events in quadrant A3,543,563708,332
Events in quadrant B4,035,664746,641
Events in quadrant C6,162,464653,267
Events in quadrant D4,114,099633,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160190
B0173800
C0235340
D0174620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7514450.598882%
B75151722.288756%
C75154686.227545%
D75151081.437126%

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 7514 7514 31 31 0.41% 0.41%
B 7515 7515 110 110 1.46% 1.46%
C 7515 7515 369 369 4.91% 4.91%
D 7515 7515 91 91 1.21% 1.21%

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 10 251 263024 1339.6 792 770 195.8
A 4 249 61433 309.87 792 770 195.8
A 4 236 38619 193.33 792 770 195.8
B 8 128 385773 2299.61 778 748 167.4
B 4 171 189671 1128.37 778 748 167.4
B 0 213 131285 779.65 778 748 167.4
C 15 224 1717955 8305.52 760 750 206.8
C 9 38 1173970 5674.46 760 750 206.8
C 12 2 85713 410.94 760 750 206.8
D 8 240 253919 1169.95 769 734 216.4
D 2 249 183390 844.04 769 734 216.4
D 15 142 130756 600.82 769 734 216.4

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