ASTROSAT CZTI

Data Quality Report

Orbit 38218

Creation date: 2024-06-27T21:49:55.021517
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/AS1A07_145T01_9000005370_38218cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38218cztM0_level2_quad_clean.evt
Size (bytes)315,028,80090,740,160
Size300.4 MB 86.5 MB
Events in quadrant A2,833,086607,407
Events in quadrant B2,497,977627,498
Events in quadrant C2,743,423601,876
Events in quadrant D3,182,428547,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115393
B0107502
C0112682
D0129832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5188200.385505%
B5188190.366230%
C5188360.693909%
D51881382.659985%

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 7221 5189 13 13 0.18% 0.25%
B 7221 5189 7 7 0.10% 0.13%
C 7221 5189 25 25 0.35% 0.48%
D 7221 5189 119 119 1.65% 2.29%

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 359317 2990.24 591 579 120.0
A 12 189 143490 1191.23 591 579 120.0
A 7 16 21519 174.54 591 579 120.0
B 0 183 55588 481.27 592 576 114.3
B 5 172 25452 217.63 592 576 114.3
B 15 85 22732 193.83 592 576 114.3
C 15 214 214821 1572.34 577 580 136.3
C 9 236 123630 903.08 577 580 136.3
C 14 254 97268 709.6 577 580 136.3
D 13 138 395893 2835.76 570 553 139.4
D 1 52 267130 1912.15 570 553 139.4
D 12 227 111582 796.41 570 553 139.4

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