ASTROSAT CZTI

Data Quality Report

Orbit 23998

Creation date: 2024-06-27T19:00:58.282800
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/AS1A07_165T01_9000003558_23998cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_23998cztM0_level2_quad_clean.evt
Size (bytes)1,099,468,800238,000,320
Size1.0 GB 227.0 MB
Events in quadrant A5,712,3981,706,704
Events in quadrant B6,063,0481,722,069
Events in quadrant C6,323,6371,637,645
Events in quadrant D14,448,8171,372,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239582
B0249682
C0258522
D0506603

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11109720.648123%
B111091211.089207%
C111092352.115402%
D11108293826.449406%

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 13609 11111 1 1 0.01% 0.01%
B 13609 11111 28 28 0.21% 0.25%
C 13609 11111 34 34 0.25% 0.31%
D 13608 11110 2178 2178 16.01% 19.60%

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 6 16 33458 111.52 1473 1449 287.0
A 13 254 18648 59.92 1473 1449 287.0
A 0 226 12901 39.9 1473 1449 287.0
B 0 197 273018 1042.22 1449 1419 260.6
B 15 32 44186 164.11 1449 1419 260.6
B 12 111 29861 109.14 1449 1419 260.6
C 0 10 380088 1207.1 1390 1402 313.7
C 0 239 244301 774.26 1390 1402 313.7
C 14 238 227501 720.71 1390 1402 313.7
D 12 218 6898727 23000.51 1255 1219 299.9
D 1 52 1113605 3709.38 1255 1219 299.9
D 8 195 613992 2043.36 1255 1219 299.9

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