ASTROSAT CZTI

Data Quality Report

Orbit 41345

Creation date: 2024-06-27T22:27:55.913173
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/AS1T05_105T01_9000005658_41345cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41345cztM0_level2_quad_clean.evt
Size (bytes)138,401,28038,931,840
Size132.0 MB 37.1 MB
Events in quadrant A1,242,829255,214
Events in quadrant B1,117,188278,240
Events in quadrant C1,261,392247,305
Events in quadrant D1,315,127228,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195
B0173
C0195
D0216

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08739
B08836
C08737
D08743

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094564428
B087843816
C099124774
D0105244976

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231110.043271%
B242350.206356%
C2341421.794105%
D2343502.134016%

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 7218 2737 0 0 0.00% 0.00%
B 7247 2826 0 0 0.00% 0.00%
C 4128 2746 39 39 0.94% 1.42%
D 7233 2752 50 50 0.69% 1.82%

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 206105 3829.13 259 255 53.8
A 2 79 28496 525.33 259 255 53.8
A 12 189 4039 70.39 259 255 53.8
B 0 190 29291 541.04 270 265 53.6
B 5 255 16734 306.98 270 265 53.6
B 0 155 6917 123.99 270 265 53.6
C 0 10 163170 2704.0 250 251 60.3
C 15 214 98686 1633.75 250 251 60.3
C 7 220 21004 344.44 250 251 60.3
D 13 249 144521 2330.69 248 242 61.9
D 1 47 107340 1730.06 248 242 61.9
D 5 222 76243 1227.72 248 242 61.9

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