ASTROSAT CZTI

Data Quality Report

Orbit 48702

Creation date: 2024-09-30T08:59:02.597218
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/AS1A13_037T01_9000006436_48702cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48702cztM0_level2_quad_clean.evt
Size (bytes)1,431,630,720306,466,560
Size1.3 GB 292.3 MB
Events in quadrant A20,462,2672,007,000
Events in quadrant B12,050,9601,962,656
Events in quadrant C9,114,9562,053,314
Events in quadrant D9,793,0321,854,205

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0761932
B0505112
C0423332
D0446782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04120
B04120
C04120
D04120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A203439494.664995%
B2034418559.118168%
C203442661.307511%
D203443461.700747%

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 21388 20345 129 129 0.60% 0.63%
B 21389 20346 934 934 4.37% 4.59%
C 21389 20346 22 22 0.10% 0.11%
D 21389 20346 116 116 0.54% 0.57%

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 11304377 24342.02 2222 2167 464.3
A 13 248 504071 1080.97 2222 2167 464.3
A 13 254 38212 77.63 2222 2167 464.3
B 12 16 3330536 7720.73 2174 2102 431.1
B 12 111 57241 127.9 2174 2102 431.1
B 11 111 53332 118.83 2174 2102 431.1
C 14 254 216852 410.18 2221 2231 523.2
C 12 2 148632 279.8 2221 2231 523.2
C 3 233 30110 53.28 2221 2231 523.2
D 2 249 905312 1644.08 2202 2134 549.4
D 7 38 128546 230.11 2202 2134 549.4
D 2 234 110175 196.67 2202 2134 549.4

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