ASTROSAT CZTI

Data Quality Report

Orbit 41581

Creation date: 2024-06-27T22:30:22.676043
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/AS1C07_001T10_9000005678_41581cztM0_level2.fits modeM0/AS1C07_001T10_9000005678_41581cztM0_level2_quad_clean.evt
Size (bytes)407,257,92092,073,600
Size388.4 MB 87.8 MB
Events in quadrant A3,057,680623,313
Events in quadrant B2,774,317641,094
Events in quadrant C4,136,878586,063
Events in quadrant D4,652,941529,594

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125462
B0124672
C0162032
D0181282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5828120.205903%
B5828170.291695%
C58284377.498284%
D58285479.385724%

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 7139 5829 4 4 0.06% 0.07%
B 7139 5829 3 3 0.04% 0.05%
C 7139 5829 298 298 4.17% 5.11%
D 7139 5829 417 417 5.84% 7.15%

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 10 83 564459 4382.82 624 611 128.6
A 15 223 53641 412.2 624 611 128.6
A 14 235 18594 139.78 624 611 128.6
B 0 245 94481 776.59 621 602 120.9
B 7 202 73982 607.01 621 602 120.9
B 0 186 69000 565.8 621 602 120.9
C 4 254 641588 4657.17 590 594 137.6
C 14 254 557410 4045.58 590 594 137.6
C 0 10 305882 2218.09 590 594 137.6
D 13 249 1559614 10901.45 583 567 143.0
D 2 120 522623 3650.41 583 567 143.0
D 12 0 112563 783.12 583 567 143.0

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