ASTROSAT CZTI

Data Quality Report

Orbit 39471

Creation date: 2024-06-27T22:04:59.264912
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_044T05_9000005480_39471cztM0_level2.fits modeM0/AS1A12_044T05_9000005480_39471cztM0_level2_quad_clean.evt
Size (bytes)419,719,68088,551,360
Size400.3 MB 84.4 MB
Events in quadrant A4,440,977564,795
Events in quadrant B2,486,671640,019
Events in quadrant C4,100,537562,911
Events in quadrant D4,082,219530,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166413
B0111702
C0159042
D0158592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547756810.370641%
B5477170.310389%
C54774748.654373%
D54774157.577141%

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 8732 5479 467 467 5.35% 8.52%
B 8732 5479 8 8 0.09% 0.15%
C 8732 5479 338 338 3.87% 6.17%
D 8732 5479 337 337 3.86% 6.15%

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 15 222 1501029 12356.82 595 583 121.4
A 10 83 424296 3489.46 595 583 121.4
A 9 143 102003 835.24 595 583 121.4
B 8 3 54411 450.26 611 594 119.5
B 12 111 14972 120.29 611 594 119.5
B 11 111 13860 110.99 611 594 119.5
C 15 208 1181396 8666.02 582 586 136.3
C 9 187 410559 3008.81 582 586 136.3
C 15 214 222547 1628.98 582 586 136.3
D 2 249 920353 6436.93 578 561 142.9
D 12 0 349129 2439.37 578 561 142.9
D 13 249 199107 1389.47 578 561 142.9

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