ASTROSAT CZTI

Data Quality Report

Orbit 20191121_T03_149T06_9000003326_level2

Creation date: 2025-12-06T01:00:19.535511
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/AS1T03_149T06_9000003326cztM0_level2.fits modeM0/AS1T03_149T06_9000003326cztM0_level2_quad_clean.evt
Size (bytes)51,370,56036,449,280
Size49.0 MB 34.8 MB
Events in quadrant A309,276187,042
Events in quadrant B298,576189,308
Events in quadrant C302,660179,350
Events in quadrant D265,860167,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110490
B0111920
C0110530
D0115280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5424400.737463%
B5424571.050885%
C5424841.548673%
D5424380.700590%

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 5809 5424 0 0 0.00% 0.00%
B 5809 5424 0 0 0.00% 0.00%
C 5809 5424 0 0 0.00% 0.00%
D 5809 5424 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 29 314 10.76 80 76 22.1
A 0 30 263 8.46 80 76 22.1
A 7 110 241 7.46 80 76 22.1
B 2 9 228 8.38 78 75 18.2
B 2 8 209 7.34 78 75 18.2
B 3 17 208 7.29 78 75 18.2
C 12 241 225 6.72 79 74 22.5
C 1 80 222 6.59 79 74 22.5
C 3 202 216 6.32 79 74 22.5
D 4 246 219 6.86 75 68 22.0
D 3 14 202 6.09 75 68 22.0
D 6 62 201 6.05 75 68 22.0

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