ASTROSAT CZTI

Data Quality Report

Orbit 37112

Creation date: 2024-06-27T21:35:41.430000
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/AS1A09_138T04_9000005282_37112cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37112cztM0_level2_quad_clean.evt
Size (bytes)454,757,76071,919,360
Size433.7 MB 68.6 MB
Events in quadrant A3,050,836452,566
Events in quadrant B3,523,615456,314
Events in quadrant C2,869,471448,334
Events in quadrant D3,940,290420,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125413
B0141232
C0119202
D0155632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5714310.542527%
B57143095.407770%
C5714140.245012%
D57142314.042702%

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 7476 5714 18 18 0.24% 0.32%
B 7476 5714 245 245 3.28% 4.29%
C 7476 5714 9 9 0.12% 0.16%
D 7476 5714 186 186 2.49% 3.26%

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 269038 1990.63 667 655 134.8
A 15 237 108738 801.67 667 655 134.8
A 9 143 78266 575.65 667 655 134.8
B 5 172 581210 4742.62 640 623 122.4
B 5 184 338251 2757.97 640 623 122.4
B 5 200 31803 254.7 640 623 122.4
C 15 214 245623 1642.6 643 647 149.1
C 0 10 56673 375.66 643 647 149.1
C 0 207 27366 179.15 643 647 149.1
D 1 52 619493 3937.09 643 627 157.2
D 13 249 240174 1523.95 643 627 157.2
D 1 47 164661 1043.55 643 627 157.2

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