ASTROSAT CZTI

Data Quality Report

Orbit 44910

Creation date: 2024-06-27T23:07:54.406034
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/AS1A13_017T02_9000006032_44910cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44910cztM0_level2_quad_clean.evt
Size (bytes)565,191,360117,780,480
Size539.0 MB 112.3 MB
Events in quadrant A6,245,302789,926
Events in quadrant B4,772,129805,779
Events in quadrant C3,429,206814,487
Events in quadrant D5,952,136685,731

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232562
B0187362
C0145152
D0223182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67464126.107323%
B67464506.670620%
C67461081.600949%
D674669810.346872%

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 7891 6747 86 86 1.09% 1.27%
B 7891 6747 217 217 2.75% 3.22%
C 7891 6746 11 11 0.14% 0.16%
D 7891 6746 443 443 5.61% 6.57%

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 2641167 15202.88 834 816 173.7
A 13 248 348297 2000.76 834 816 173.7
A 10 248 16391 89.68 834 816 173.7
B 4 171 834834 5076.9 830 806 164.3
B 0 155 152654 924.33 830 806 164.3
B 15 36 114324 691.01 830 806 164.3
C 15 208 64303 322.28 838 845 196.9
C 1 3 33069 163.65 838 845 196.9
C 3 233 23652 115.83 838 845 196.9
D 1 52 698472 3447.42 809 784 202.4
D 12 233 644439 3180.43 809 784 202.4
D 13 249 365165 1800.48 809 784 202.4

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