ASTROSAT CZTI

Data Quality Report

Orbit 27698

Creation date: 2024-06-27T19:43:16.020436
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/AS1T03_262T01_9000003988_27698cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27698cztM0_level2_quad_clean.evt
Size (bytes)334,062,72059,123,520
Size318.6 MB 56.4 MB
Events in quadrant A2,207,457370,785
Events in quadrant B2,387,106372,676
Events in quadrant C2,285,566358,509
Events in quadrant D2,906,685347,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098190
B0102120
C098840
D0119630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4848370.763201%
B4849501.031140%
C4849561.154877%
D48481122.310231%

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 4848 4848 0 0 0.00% 0.00%
B 4849 4849 1 1 0.02% 0.02%
C 4849 4849 0 0 0.00% 0.00%
D 4848 4848 76 76 1.57% 1.57%

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 13 254 7292 58.32 571 559 115.5
A 3 137 5656 44.15 571 559 115.5
A 0 226 4929 37.85 571 559 115.5
B 0 230 113750 1027.08 567 551 110.2
B 0 190 25838 229.44 567 551 110.2
B 12 111 13945 121.53 567 551 110.2
C 14 238 88445 673.13 550 552 130.6
C 3 233 50536 382.8 550 552 130.6
C 13 61 3818 25.01 550 552 130.6
D 1 52 553167 4162.9 550 534 132.8
D 6 112 171046 1284.44 550 534 132.8
D 2 250 60200 449.45 550 534 132.8

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