ASTROSAT CZTI

Data Quality Report

Orbit 00598

Creation date: 2024-06-27T14:00:21.299630
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/AS1P01_126T01_9000000084_00598cztM0_level2.evt modeM0/AS1P01_126T01_9000000084_00598cztM0_level2_quad_clean.evt
Size (bytes)862,182,72056,494,080
Size822.2 MB 53.9 MB
Events in quadrant A6,371,443337,721
Events in quadrant B6,650,865339,438
Events in quadrant C5,619,791341,422
Events in quadrant D7,113,725317,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227213
B0235792
C0205452
D0249702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534920.037390%
B5349170.317816%
C534920.037390%
D53493376.300243%

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 7505 5350 113 113 1.51% 2.11%
B 7505 5350 166 166 2.21% 3.10%
C 7505 5350 29 29 0.39% 0.54%
D 7505 5349 517 517 6.89% 9.67%

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 13 160 35371 93.91 1617 1605 359.5
A 0 238 34915 92.65 1617 1605 359.5
A 13 190 23622 61.24 1617 1605 359.5
B 7 221 341416 891.84 1600 1610 381.0
B 4 250 86390 222.51 1600 1610 381.0
B 5 46 19204 46.18 1600 1610 381.0
C 5 234 20450 47.79 1417 1459 397.4
C 15 241 16976 39.05 1417 1459 397.4
C 9 83 14499 32.82 1417 1459 397.4
D 12 188 393988 911.1 1370 1421 430.9
D 1 4 317445 733.45 1370 1421 430.9
D 2 90 291164 672.46 1370 1421 430.9

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