ASTROSAT CZTI

Data Quality Report

Orbit 42950

Creation date: 2024-06-27T22:46:10.580106
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_143T01_9000005834_42950cztM0_level2.fits modeM0/AS1T05_143T01_9000005834_42950cztM0_level2_quad_clean.evt
Size (bytes)341,141,76089,533,440
Size325.3 MB 85.4 MB
Events in quadrant A3,690,143595,468
Events in quadrant B2,355,973632,963
Events in quadrant C2,512,195583,362
Events in quadrant D3,664,616534,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142291
B0105291
C0106761
D0144831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52002735.250000%
B520060.115385%
C520150.096135%
D52001683.230769%

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 7023 5201 219 219 3.12% 4.21%
B 7023 5200 2 2 0.03% 0.04%
C 7024 5201 3 3 0.04% 0.06%
D 7023 5200 177 177 2.52% 3.40%

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 15 237 794207 6779.81 575 563 117.1
A 10 83 498045 4249.81 575 563 117.1
A 15 222 129725 1103.38 575 563 117.1
B 4 171 26217 227.93 584 567 112.5
B 12 111 13608 115.88 584 567 112.5
B 3 112 13333 113.44 584 567 112.5
C 15 214 208662 1576.13 570 574 132.0
C 14 254 37877 282.55 570 574 132.0
C 0 207 32402 241.08 570 574 132.0
D 12 217 680567 4952.16 566 549 137.3
D 12 6 209489 1521.58 566 549 137.3
D 13 249 194416 1411.82 566 549 137.3

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