ASTROSAT CZTI

Data Quality Report

Orbit 37779

Creation date: 2024-06-27T21:44:18.766796
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_106T02_9000005344_37779cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37779cztM0_level2_quad_clean.evt
Size (bytes)436,691,52072,031,680
Size416.5 MB 68.7 MB
Events in quadrant A2,752,194461,811
Events in quadrant B2,938,512463,454
Events in quadrant C2,675,039459,612
Events in quadrant D4,504,120429,496

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112113
B0119502
C0109812
D0169942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523170.133818%
B5231490.936723%
C5231250.477920%
D52312915.562990%

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 7114 5232 4 4 0.06% 0.08%
B 7114 5232 43 43 0.60% 0.82%
C 7114 5232 26 26 0.37% 0.50%
D 7114 5232 308 308 4.33% 5.89%

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 331240 2701.01 614 603 122.4
A 9 143 14434 112.99 614 603 122.4
A 13 6 11932 92.55 614 603 122.4
B 5 255 268249 2359.25 602 586 113.5
B 0 189 82552 722.47 602 586 113.5
B 5 172 81567 713.79 602 586 113.5
C 15 214 242164 1770.49 589 593 136.4
C 0 10 123328 899.53 589 593 136.4
C 15 159 5416 35.34 589 593 136.4
D 12 235 832045 5830.4 583 565 142.6
D 2 249 721325 5054.03 583 565 142.6
D 10 253 205474 1436.84 583 565 142.6

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