ASTROSAT CZTI

Data Quality Report

Orbit 39723

Creation date: 2024-06-27T22:08:13.846444
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_022T01_9000005494_39723cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39723cztM0_level2_quad_clean.evt
Size (bytes)378,970,56093,430,080
Size361.4 MB 89.1 MB
Events in quadrant A3,357,802647,939
Events in quadrant B2,804,232663,052
Events in quadrant C3,110,859616,889
Events in quadrant D4,362,307547,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132753
B0115512
C0122512
D0163702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50521312.593032%
B5052811.603325%
C50521523.008709%
D50524548.986540%

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 7174 5053 93 93 1.30% 1.84%
B 7174 5053 49 49 0.68% 0.97%
C 7174 5053 125 125 1.74% 2.47%
D 7174 5053 433 433 6.04% 8.57%

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 13 248 468220 3853.54 598 586 121.4
A 10 83 449829 3701.99 598 586 121.4
A 15 174 119688 981.46 598 586 121.4
B 5 172 265561 2341.56 597 580 113.2
B 5 255 103552 909.93 597 580 113.2
B 4 170 58870 515.09 597 580 113.2
C 9 187 487140 3621.87 587 592 134.3
C 15 214 209091 1552.07 587 592 134.3
C 15 208 71256 526.02 587 592 134.3
D 12 227 1706536 12192.61 571 556 139.9
D 12 233 213375 1521.01 571 556 139.9
D 5 32 64503 457.03 571 556 139.9

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