ASTROSAT CZTI

Data Quality Report

Orbit 40246

Creation date: 2024-06-27T22:14:06.009446
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/AS1T05_086T01_9000005534_40246cztM0_level2.fits modeM0/AS1T05_086T01_9000005534_40246cztM0_level2_quad_clean.evt
Size (bytes)333,506,88087,894,720
Size318.1 MB 83.8 MB
Events in quadrant A3,013,324587,480
Events in quadrant B2,491,707612,170
Events in quadrant C2,538,047588,330
Events in quadrant D3,898,999510,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122083
B0108712
C0107782
D0152182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5175751.449275%
B5175180.347826%
C5175160.309179%
D51753747.227053%

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 7088 5176 45 45 0.63% 0.87%
B 7088 5176 14 14 0.20% 0.27%
C 7088 5176 9 9 0.13% 0.17%
D 7088 5176 324 324 4.57% 6.26%

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 450945 3860.97 564 553 116.7
A 13 248 322335 2758.47 564 553 116.7
A 7 3 30061 252.96 564 553 116.7
B 5 255 94544 850.26 569 556 110.5
B 7 202 56569 506.72 569 556 110.5
B 4 171 48442 433.2 569 556 110.5
C 15 214 220516 1673.2 560 565 131.5
C 14 254 73778 556.94 560 565 131.5
C 0 10 52901 398.13 560 565 131.5
D 12 227 1514928 11411.48 538 526 132.7
D 13 249 91353 684.41 538 526 132.7
D 6 239 88946 666.27 538 526 132.7

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