ASTROSAT CZTI

Data Quality Report

Orbit 28050

Creation date: 2024-06-27T19:47:29.027910
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/AS1A10_045T03_9000004052_28050cztM0_level2.evt modeM0/AS1A10_045T03_9000004052_28050cztM0_level2_quad_clean.evt
Size (bytes)1,325,897,280236,381,760
Size1.2 GB 225.4 MB
Events in quadrant A7,987,6071,550,493
Events in quadrant B7,943,3741,567,901
Events in quadrant C8,722,7811,479,061
Events in quadrant D14,383,8371,420,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345000
B0343320
C0366430
D0540850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16553890.537667%
B165541340.809472%
C165542331.407515%
D1655416549.991543%

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 19733 16554 0 0 0.00% 0.00%
B 19734 16554 7 7 0.04% 0.04%
C 19734 16555 22 22 0.11% 0.13%
D 19734 16556 1521 1521 7.71% 9.19%

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 0 13 212852 530.33 2015 1975 397.6
A 13 254 26223 60.98 2015 1975 397.6
A 3 137 19068 42.99 2015 1975 397.6
B 12 111 46128 118.58 1990 1943 372.6
B 4 52 43285 110.95 1990 1943 372.6
B 11 111 41738 106.8 1990 1943 372.6
C 3 233 713964 1627.17 1910 1925 437.6
C 14 238 313397 711.79 1910 1925 437.6
C 15 208 185339 419.14 1910 1925 437.6
D 8 195 3596013 8156.84 1866 1815 440.6
D 7 223 2042509 4631.25 1866 1815 440.6
D 2 250 699323 1582.96 1866 1815 440.6

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