ASTROSAT CZTI

Data Quality Report

Orbit 54336

Creation date: 2025-10-14T06:26:33.340114
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/AS1A14_126T15_9000006516_54336cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54336cztM0_level2_quad_clean.evt
Size (bytes)2,012,823,360237,493,440
Size1.9 GB 226.5 MB
Events in quadrant A11,168,4631,705,410
Events in quadrant B10,297,4141,885,165
Events in quadrant C12,232,7131,617,541
Events in quadrant D39,329,820662,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473762
B0439662
C0503192
D01293362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1914410425.442959%
B191443982.078980%
C1914510605.536694%
D191451191062.209454%

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 20294 19146 503 503 2.48% 2.63%
B 20294 19146 168 168 0.83% 0.88%
C 20295 19146 828 828 4.08% 4.32%
D 20294 19145 11634 11634 57.33% 60.77%

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 7 14 1519259 3110.69 1985 1933 487.8
A 7 29 483939 988.17 1985 1933 487.8
A 15 174 372399 759.5 1985 1933 487.8
B 7 0 956923 2241.84 1994 1919 426.0
B 2 249 413051 965.12 1994 1919 426.0
B 10 247 225148 524.02 1994 1919 426.0
C 1 241 1403285 2665.81 1930 1916 525.7
C 15 147 888940 1687.38 1930 1916 525.7
C 15 157 711401 1349.65 1930 1916 525.7
D 15 108 30067928 82152.54 1254 1190 366.0
D 8 176 1708045 4663.71 1254 1190 366.0
D 12 3 683401 1864.03 1254 1190 366.0

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