ASTROSAT CZTI

Data Quality Report

Orbit 38834

Creation date: 2024-06-27T21:57:02.232637
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_077T06_9000005408_38834cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38834cztM0_level2_quad_clean.evt
Size (bytes)345,312,00092,041,920
Size329.3 MB 87.8 MB
Events in quadrant A2,845,399633,018
Events in quadrant B2,677,231645,083
Events in quadrant C2,737,878607,806
Events in quadrant D4,104,021525,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118362
B0116051
C0114411
D0158571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5363120.223755%
B5363240.447511%
C5363370.689912%
D53634428.241656%

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 7096 5364 3 3 0.04% 0.06%
B 7096 5364 10 10 0.14% 0.19%
C 7096 5364 30 30 0.42% 0.56%
D 7096 5364 360 360 5.07% 6.71%

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 365420 2906.99 617 604 125.5
A 13 248 51157 402.83 617 604 125.5
A 9 143 27163 211.63 617 604 125.5
B 4 81 73171 616.75 615 599 117.7
B 15 85 64625 544.13 615 599 117.7
B 5 184 45955 385.46 615 599 117.7
C 15 214 217560 1541.93 603 607 140.7
C 14 254 88877 627.35 603 607 140.7
C 3 233 28257 196.51 603 607 140.7
D 2 249 829090 5869.66 577 563 141.2
D 12 235 241871 1709.54 577 563 141.2
D 5 222 238665 1686.82 577 563 141.2

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