ASTROSAT CZTI

Data Quality Report

Orbit 42765

Creation date: 2024-06-27T22:43:58.040709
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/AS1A05_013T01_9000005822_42765cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42765cztM0_level2_quad_clean.evt
Size (bytes)294,042,24088,960,320
Size280.4 MB 84.8 MB
Events in quadrant A2,864,388606,351
Events in quadrant B2,782,486610,276
Events in quadrant C2,468,791589,335
Events in quadrant D2,385,223543,052

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114382
B0112892
C0100672
D0104112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4920160.325203%
B49201122.276423%
C492090.182927%
D4919180.365928%

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 7073 4921 7 7 0.10% 0.14%
B 7073 4921 80 80 1.13% 1.63%
C 7073 4921 5 5 0.07% 0.10%
D 7072 4920 19 19 0.27% 0.39%

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 83 517914 4409.15 578 567 117.3
A 13 248 92444 783.03 578 567 117.3
A 2 79 11308 91.54 578 567 117.3
B 0 229 373661 3404.54 570 556 109.6
B 0 156 75605 684.81 570 556 109.6
B 0 245 42643 384.04 570 556 109.6
C 15 214 205469 1560.0 565 570 131.3
C 14 254 30408 227.17 565 570 131.3
C 8 79 10132 72.8 565 570 131.3
D 2 249 125879 899.9 563 548 139.3
D 12 6 38670 273.72 563 548 139.3
D 2 234 24693 173.37 563 548 139.3

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