ASTROSAT CZTI

Data Quality Report

Orbit 46643

Creation date: 2024-06-27T23:25:47.594411
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_092T16_9000006244_46643cztM0_level2.fits modeM0/AS1A13_092T16_9000006244_46643cztM0_level2_quad_clean.evt
Size (bytes)1,233,195,840273,611,520
Size1.1 GB 260.9 MB
Events in quadrant A16,258,0071,825,559
Events in quadrant B8,745,3161,838,333
Events in quadrant C7,918,8481,800,909
Events in quadrant D11,409,6331,643,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0598113
B0381393
C0363574
D0458953

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170485873.443219%
B170483201.877053%
C17048840.492726%
D170486984.094322%

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 18788 17051 99 99 0.53% 0.58%
B 18788 17051 84 84 0.45% 0.49%
C 18788 17051 27 27 0.14% 0.16%
D 18788 17051 556 556 2.96% 3.26%

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 8595393 22172.27 1872 1830 387.6
A 15 235 273832 701.79 1872 1830 387.6
A 13 6 45291 112.13 1872 1830 387.6
B 0 189 426168 1153.21 1859 1803 368.0
B 5 32 242181 653.22 1859 1803 368.0
B 0 198 173013 465.26 1859 1803 368.0
C 14 254 183464 418.87 1836 1845 433.6
C 15 208 154492 352.05 1836 1845 433.6
C 9 54 140819 320.52 1836 1845 433.6
D 1 52 1285532 2786.58 1828 1775 460.7
D 12 233 959884 2079.72 1828 1775 460.7
D 11 224 611317 1323.1 1828 1775 460.7

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