ASTROSAT CZTI

Data Quality Report

Orbit 13615

Creation date: 2024-06-27T16:43:21.055329
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/AS1A04_012T01_9000002012_13615cztM0_level2.evt modeM0/AS1A04_012T01_9000002012_13615cztM0_level2_quad_clean.evt
Size (bytes)1,286,006,400217,500,480
Size1.2 GB 207.4 MB
Events in quadrant A8,232,0471,375,181
Events in quadrant B9,192,9671,364,555
Events in quadrant C8,460,6381,357,122
Events in quadrant D11,865,4601,270,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364684
B0390374
C0365124
D0468224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176951160.655552%
B176952311.305454%
C17695920.519921%
D176957494.232834%

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 19981 17700 6 6 0.03% 0.03%
B 19981 17700 69 69 0.35% 0.39%
C 19981 17700 9 9 0.05% 0.05%
D 19981 17700 650 650 3.25% 3.67%

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 1 162 51955 116.47 2108 2064 428.4
A 15 69 49880 111.62 2108 2064 428.4
A 0 226 18951 39.42 2108 2064 428.4
B 0 219 449268 1123.64 2089 2037 398.0
B 3 64 209586 521.46 2089 2037 398.0
B 10 244 82161 201.31 2089 2037 398.0
C 3 233 412932 868.68 2044 2057 473.0
C 14 234 53198 108.12 2044 2057 473.0
C 0 207 15669 28.78 2044 2057 473.0
D 5 222 3035621 6205.99 2011 1954 488.8
D 8 195 793382 1619.03 2011 1954 488.8
D 13 249 271427 551.26 2011 1954 488.8

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