ASTROSAT CZTI

Data Quality Report

Orbit 41923

Creation date: 2024-06-27T22:34:31.973901
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_118T01_9000005718_41923cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41923cztM0_level2_quad_clean.evt
Size (bytes)658,952,64073,543,680
Size628.4 MB 70.1 MB
Events in quadrant A3,434,465619,649
Events in quadrant B3,399,738641,841
Events in quadrant C3,211,212582,195
Events in quadrant D13,945,43321,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134083
B0134522
C0125042
D0446462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51631262.440442%
B51631352.614759%
C51632715.248886%
D5163503397.482084%

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 7195 5164 81 81 1.13% 1.57%
B 7195 5164 77 77 1.07% 1.49%
C 7195 5164 269 269 3.74% 5.21%
D 7195 5164 4907 4907 68.20% 95.02%

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 540527 4464.5 594 584 120.9
A 14 24 439633 3630.26 594 584 120.9
A 2 79 63910 523.61 594 584 120.9
B 0 229 523351 4650.95 592 576 112.4
B 0 156 162170 1437.65 592 576 112.4
B 0 190 161560 1432.22 592 576 112.4
C 0 10 791385 6140.24 557 560 128.8
C 15 214 203433 1575.18 557 560 128.8
C 0 15 37369 285.8 557 560 128.8
D 12 79 12364036 252797.9 194 188 48.9
D 13 249 687869 14060.7 194 188 48.9
D 12 6 32410 658.83 194 188 48.9

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