ASTROSAT CZTI

Data Quality Report

Orbit 42544

Creation date: 2024-06-27T22:41:25.651670
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/AS1A09_002T01_9000005810_42544cztM0_level2.fits modeM0/AS1A09_002T01_9000005810_42544cztM0_level2_quad_clean.evt
Size (bytes)340,214,40089,982,720
Size324.5 MB 85.8 MB
Events in quadrant A3,060,252609,135
Events in quadrant B2,457,848623,218
Events in quadrant C2,620,810593,603
Events in quadrant D4,025,907513,496

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124172
B0112902
C0113212
D0161172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5503581.053971%
B5504230.417878%
C5504110.199855%
D55044047.340116%

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 8728 5505 43 43 0.49% 0.78%
B 8729 5506 14 14 0.16% 0.25%
C 8729 5506 7 7 0.08% 0.13%
D 8729 5506 346 346 3.96% 6.28%

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 559950 4604.67 594 583 121.5
A 2 79 178581 1465.27 594 583 121.5
A 13 248 16298 129.36 594 583 121.5
B 5 172 56067 493.87 590 575 112.4
B 0 245 45862 403.05 590 575 112.4
B 5 255 24846 216.01 590 575 112.4
C 15 214 230633 1707.21 581 586 134.8
C 15 111 44284 324.29 581 586 134.8
C 14 254 39398 288.03 581 586 134.8
D 2 249 725669 5264.17 564 548 137.7
D 2 16 402135 2915.41 564 548 137.7
D 12 233 386606 2802.67 564 548 137.7

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