ASTROSAT CZTI

Data Quality Report

Orbit 38611

Creation date: 2024-06-27T21:54:06.552882
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_052T04_9000005388_38611cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38611cztM0_level2_quad_clean.evt
Size (bytes)379,149,12099,385,920
Size361.6 MB 94.8 MB
Events in quadrant A3,250,809673,420
Events in quadrant B3,231,635684,989
Events in quadrant C3,047,442654,223
Events in quadrant D4,047,525585,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132733
B0133632
C0129152
D0160582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5881440.748172%
B5881390.663153%
C5881280.476110%
D58812754.676075%

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 7284 5882 28 28 0.38% 0.48%
B 7284 5882 22 22 0.30% 0.37%
C 7284 5882 16 16 0.22% 0.27%
D 7284 5882 284 284 3.90% 4.83%

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 479910 3570.05 662 649 134.2
A 13 248 110999 822.0 662 649 134.2
A 9 143 64164 473.13 662 649 134.2
B 0 183 344638 2693.11 659 643 127.7
B 4 251 68315 529.8 659 643 127.7
B 4 171 58380 452.02 659 643 127.7
C 14 254 260384 1752.22 638 642 148.2
C 15 214 239677 1612.53 638 642 148.2
C 0 10 25720 169.18 638 642 148.2
D 12 227 509337 3299.88 628 611 154.2
D 13 249 242049 1566.1 628 611 154.2
D 10 253 212369 1373.58 628 611 154.2

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