ASTROSAT CZTI

Data Quality Report

Orbit 06956

Creation date: 2024-06-27T15:13:38.517887
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/AS1A02_111T01_9000000954_06956cztM0_level2.evt modeM0/AS1A02_111T01_9000000954_06956cztM0_level2_quad_clean.evt
Size (bytes)967,872,960173,272,320
Size923.0 MB 165.2 MB
Events in quadrant A6,431,2121,080,825
Events in quadrant B7,675,2981,083,090
Events in quadrant C6,367,7621,070,973
Events in quadrant D7,867,0731,022,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291313
B0325983
C0290413
D0330563

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14345320.223074%
B143452841.979784%
C14345380.264901%
D143451380.962008%

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 15860 14348 0 0 0.00% 0.00%
B 15860 14348 141 141 0.89% 0.98%
C 15860 14348 3 3 0.02% 0.02%
D 15860 14348 60 60 0.38% 0.42%

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 13 248 19336 52.33 1663 1627 338.4
A 0 226 16203 43.07 1663 1627 338.4
A 12 194 15246 40.24 1663 1627 338.4
B 0 228 543675 1709.37 1664 1620 317.1
B 4 48 187255 585.4 1664 1620 317.1
B 4 81 176919 552.8 1664 1620 317.1
C 7 247 21522 53.27 1617 1623 373.6
C 12 4 14762 35.17 1617 1623 373.6
C 13 61 12900 30.19 1617 1623 373.6
D 8 195 1035123 2612.14 1613 1563 395.7
D 14 34 169866 425.36 1613 1563 395.7
D 2 152 132113 329.94 1613 1563 395.7

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