ASTROSAT CZTI

Data Quality Report

Orbit 36627

Creation date: 2024-06-27T21:29:24.209635
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/AS1A11_049T03_9000005228_36627cztM0_level2.evt modeM0/AS1A11_049T03_9000005228_36627cztM0_level2_quad_clean.evt
Size (bytes)310,331,52019,172,160
Size296.0 MB 18.3 MB
Events in quadrant A1,454,507120,579
Events in quadrant B2,898,51673,378
Events in quadrant C1,496,175114,655
Events in quadrant D3,394,243107,483

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057892
B0102631
C059321
D0116781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2269281.234024%
B226972732.040546%
C2269703.085059%
D226966529.308065%

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 3732 2270 16 16 0.43% 0.70%
B 3731 2269 294 294 7.88% 12.96%
C 3732 2270 43 43 1.15% 1.89%
D 3732 2270 589 589 15.78% 25.95%

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 97112 1480.29 306 302 65.4
A 15 223 78561 1196.63 306 302 65.4
A 0 8 71232 1084.57 306 302 65.4
B 5 200 1705052 34094.64 249 244 50.0
B 5 255 74771 1490.47 249 244 50.0
B 0 219 39285 780.79 249 244 50.0
C 0 10 239568 3501.27 281 283 68.3
C 15 214 96770 1411.82 281 283 68.3
C 14 254 54880 798.88 281 283 68.3
D 12 17 1169785 17688.0 252 245 66.1
D 12 235 1093459 16533.65 252 245 66.1
D 13 171 29826 447.38 252 245 66.1

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