ASTROSAT CZTI

Data Quality Report

Orbit 39661

Creation date: 2024-06-27T22:07:25.772266
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/AS1A12_051T01_9000005490_39661cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39661cztM0_level2_quad_clean.evt
Size (bytes)388,025,28089,000,640
Size370.0 MB 84.9 MB
Events in quadrant A4,467,454595,980
Events in quadrant B2,820,251612,671
Events in quadrant C3,634,635580,669
Events in quadrant D3,041,285544,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169642
B0118311
C0142261
D0125041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51451482.876579%
B5145921.788144%
C51451733.362488%
D51451011.963071%

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 6938 5146 97 97 1.40% 1.88%
B 6938 5146 59 59 0.85% 1.15%
C 6938 5146 152 152 2.19% 2.95%
D 6938 5146 91 91 1.31% 1.77%

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 15 222 1670551 13997.35 583 573 119.3
A 10 83 380573 3185.07 583 573 119.3
A 15 174 78056 649.44 583 573 119.3
B 5 172 481370 4331.46 575 560 111.0
B 15 32 40950 363.86 575 560 111.0
B 15 85 14363 124.35 575 560 111.0
C 15 208 806757 6162.58 559 563 130.8
C 9 187 401704 3066.34 559 563 130.8
C 15 214 209932 1600.43 559 563 130.8
D 13 174 267792 1923.82 565 549 138.9
D 13 249 161805 1160.85 565 549 138.9
D 12 227 157377 1128.97 565 549 138.9

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