ASTROSAT CZTI

Data Quality Report

Orbit 45236

Creation date: 2024-06-27T23:11:11.359765
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_038T03_9000006058_45236cztM0_level2.fits modeM0/AS1A13_038T03_9000006058_45236cztM0_level2_quad_clean.evt
Size (bytes)1,555,485,120289,710,720
Size1.4 GB 276.3 MB
Events in quadrant A16,107,3681,953,631
Events in quadrant B9,771,2062,038,390
Events in quadrant C9,208,9982,014,391
Events in quadrant D21,004,1171,438,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0616008
B0422993
C0411393
D0756533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192438014.162553%
B192455692.956612%
C192463181.652291%
D19246421221.885067%

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 20530 19244 124 124 0.60% 0.64%
B 20530 19245 94 94 0.46% 0.49%
C 20531 19247 71 71 0.35% 0.37%
D 20531 19248 3005 3005 14.64% 15.61%

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 6995531 15315.11 2198 2144 456.6
A 13 248 448636 977.79 2198 2144 456.6
A 15 174 49966 104.73 2198 2144 456.6
B 5 32 300819 689.07 2202 2133 433.5
B 12 3 205195 468.47 2202 2133 433.5
B 5 255 118314 268.03 2202 2133 433.5
C 12 2 229602 441.6 2190 2206 514.9
C 14 254 188272 361.34 2190 2206 514.9
C 3 233 89407 169.34 2190 2206 514.9
D 13 249 3101546 6265.36 1965 1904 494.7
D 12 17 3016449 6093.35 1965 1904 494.7
D 4 232 2427113 4902.12 1965 1904 494.7

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